Klingenfuss Hot Frequencies
Hot Frequencies and
Digital Data Transmission Screenshots

The following - very recent! - screenshots have been produced and uploaded to this international pooling webpage by our worldwide net of cooperators, using advanced equipment such as the superb PROCITEC Digital Data Decoders. All frequencies are in kHz, and all system times are UTC. Schedules and traffic details can be found in our 2023/2024 Guide to Utility Radio Stations. Standard aeronautical • meteorological • telecommunication abbreviations and ICAO Airport Codes and Airline Designators can be found everywhere; certain very special procedures and terms - particularly for avionics - are explained hereunder. Latest screenshots on top!


Open-Source Intelligence at its best - here it's Open Signals Intelligence ...
Since the start of Putin's war against Ukraine
on 24 FEB 2022, most of those hundreds of aircraft
operated by airlines - such as Aeroflot - in the Russian Federation
and leased from e.g. "offshore" companies elsewhere
and registered in e.g. Bermuda as VP-ABC or VQ-XYZ for tax avoidance
have been "re-registered" (read: seized) under the new callsign series RA73...
These callsigns have never been monitored before!
RA73678 is yet another "re-registered" (read: seized) Airbus A319-111 aircraft
leased from GECAS = General Electric Capital Aviation Services in Stamford CT, USA
and originally registered as VP-BWK in Bermuda ...
Aurora Airlines (based at UHSS = Yuzhno-Sakhalinsk) flight HZ5643:
enroute UNNT - UHHH communication media advisory message ...
Apart from perfectly decoding ADS-C and CPDLC messages such as Basic Reports,
the superb go2MONITOR's Result Viewer displays meta-data
such as sender and recipient identifications extracted from decoder result files
here selected from the 1 JAN to 2 FEB 2023 time range

6619.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-30C1 + B-6331 + F-HRBJ + PK-BGO + VN-A899 + 9M-MAG + 9V-SHT + flight CCA450
PACD is an ETOPS emergency alternate airport for trans-Pacific flights ...
AGM = Miscellaneous Air/Ground Message
CDP = Computer Diagnostics Program
EDP = Engine Display Panel
FWS = Flight Warning System
OCC = Operations Control Centre
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

518.0 kHz JNB Naha Radio, Okinawa Island, Japan

6661.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft CC-BGL + CC-CWY + EC-NBN + F-HREV + N120FE + N593FE + N859GT + N29984 + PR-YYD + flight DAL41
CFB = Centralized Fault Book
DFD = Digital Flight Data
ECS = Environmental Control System
EMR = Electromagnetic Reliability (of Avionics)
MX = Maintenance
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FMH = Facilities Message Header = Flight Number
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

490.0 kHz UUI Odessa Radio, Ukraine
Warnings still in force - received 050230Z FEB 2023

490.0 kHz IGS Piombino Radio, Italy

13276.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft N104FE + XA-VRY + 9V-SMJ + flight VIR7B
DFD = Digital Flight Data
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

490.0 kHz 9AS Split Radio, Croatia

490.0 kHz Antalya Radio, Turkey

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-32C6 + B-305U + B-2291 + JA804A + JA810A + JA835A + RA73178 + RPC8789 + flight AIC302
Increasing solar activity - and the ionosphere going totally crazy:
flight data downlink for a UWKD - UUEE local hop ... via Auckland!
RESPWI/AK = FMS downlink acknowledgement of PWI = Predicted Wind uplink data
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

13351.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft JA10VA + SU-GCM + SU-GEB + flight HZ5685
Increasing solar activity - and the ionosphere going totally crazy:
Command/response uplink for a HECA - DTTA regional hop ... via Auckland!
Increasing solar activity - and the ionosphere going totally crazy:
REQPWI downlink and MDPWI uplink for a HECA - GMMN regional flight ... via Auckland!
MDPWI = Meteorological Data - Predicted Wind for FL 320
REQPWI = Predicted Wind Request for FL 320

13351.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-1297 + B-18908 + N519DN + PK-GMQ + SU-GEB + flight PR0100
Increasing solar activity - and the ionosphere going totally crazy:
POSREPs downlink for a HECA - GMMN regional flight ... via Auckland!
• DELAY is a critical procedure, designed to prevent pilots
from acting on any old CPDLC messages
that might have been delayed in the network
The most serious of such cases would be
the pilot executing a clearance that was no longer valid
• Air and ground end systems include
(1) Datalink Application Service Element = CPDLC
(2) Aeronautical Telecommunication Network upper layers
(3) TP4 = Transport Protocol Class 4
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

16898.5 kHz XSG Shanghai Radio, China
N/W = Nautical Warning
Characters in brackets denote the Latin alphabet
The four-figure groups without brackets
are Chinese ideographs
Presumably local time used here since received at 0650 UTC ...

16559.0 kHz XSG Shanghai Radio, China
CMA = China Meteorological Administration

16559.0 kHz XSG Shanghai Radio, China
CMA = China Meteorological Administration

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

13074.0 kHz JFC Misaki Fisheries Radio, Japan
Latest tuna market prices ...
The date reads 5 2 3 = 2023 February 3
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

13074.0 kHz JFC Misaki Fisheries Radio, Japan
The date reads 5 2 3 = 2023 February 3
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

518.0 kHz HZH Jeddah Radio, Saudi Arabia

518.0 kHz A9M Hamala Radio, Bahrain
BA = British Admiralty
MENAS = Middle East Navigation Aids Service
MEGULITE = Middle East Gulf Lighting Service

518.0 kHz NMO United States Coast Guard Honolulu, Hawaii
BNM = Broadcast Notice to Mariners

6565.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-18908 + C-FNNH + HL7610 + JA211A + N629UP + 9V-SMN + flight FDX987
CFD = Centralized Fault Display
DX = Dispatcher
ECS = Environmental Control System
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint

The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

518.0 kHz United States Coast Guard Savannah GA, United States of America
BNM = Broadcast Notice to Mariners

518.0 kHz VAU Canadian Coast Guard Chebogue NS, Canada

10081.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft CN-RGF + G-VLDY + JA12KZ + RA73229 + RA73232 + RA73735 + RA73748 + RA73749 + TC-MCN + flight UAE17
AFS = Auto Flight System
AGM = Miscellaneous Air/Ground Message
ATSU = Air Traffic Service Unit
CFB = Centralized Fault Book
CFD = Centralized Fault Display
CFDS = Centralized Fault Display System
FLR = Failure
FMGC = Flight Management and Guidance Computer
FR = Fault Report, followed by the Date-Time Group
WN = Warning Number, followed by the Date-Time Group

518.0 kHz NMQ United States Coast Guard Long Beach CA, United States of America
BNM = Broadcast Notice to Mariners
LA = Los Angeles
LB = Long Beach
SD = San Diego
SF = San Francisco

4209.5 kHz XVG Hai Phong Radio, Viet Nam

4209.5 kHz XVN Nha Trang Radio, Viet Nam

518.0 kHz Vakalpudi Radio, India
IMD = India Meteorological Department
INTM = Indian Notices to Mariners

11312.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft N528FE + N891FD + N76021 + PK-GNN + 9V-SGD + 9V-SKS + flight QTR57C
Code figures for PANC runways braking action - see e.g. here
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
TI2 = Terminal Information Request
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

518.0 kHz XVS Ho Chi Minh City Radio, Viet Nam
DWT = Dead Weight Tonnage
GT = Gross Tonnage
LOA = Length Over All

518.0 kHz 9MG Georgetown Radio, Pinang Island, Malaysia
The DTG of UE92 should read 011336 UTC FEB 2023, of course ...

6661.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft CC-BGA + N877FD + N892FD + flight DAL527
CFD = Centralized Fault Display
CG = Center of Gravity
CI = Consistency Index
FEL = Fuel Estimation Left
FER = Fuel Estimation Right
SCV = Surge Control Valve

518.0 kHz CBV Valparaiso Radio, Chile
EGC = Enhanced Group Call

11387.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft F-HTYF + G-VLDY + N613UP + flight AVA952
DT = Destination, followed by the runway number
FN = Flight Number
LDA = Landing Distance Available = treshold to treshold = TORA plus the treshold displacement
TI2 = Terminal Information Request
TORA = Take Off Run Available
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

11387.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft G-VLDY + flight UAL526
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
FRP = Facilities Response
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

16806.5 kHz NMF United States Coast Guard Boston MA, United States of America
IIP = International Ice Patrol

13351.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-LXR + B-322S + B-8167 + EI-KGF + HL8502 + RA73173 + RPC8611 + VN-A893 + flight UAE8PA
ZFW + TOF = TOW - TIF = LAW
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
DOI = Dry Operating Index
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
IR = Inertial Reference
MMR = Multi-Mode Receiver
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

13351.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft EC-MXV + HL8259 + flight CSZ936
TI2 = Terminal Information Request
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

13351.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft EC-MXV + LV-KAN + flight CES273
Increasing solar activity - and the ionosphere going totally crazy:
ETOPS uplink for a SAEZ - KJFK intercontinental flight ... via Auckland!
CCO = Operations Control Centre
• Air and ground end systems include
(1) Datalink Application Service Element = CPDLC
(2) Aeronautical Telecommunication Network upper layers
(3) TP4 = Transport Protocol Class 4
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

13351.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft LV-KAN + LV-KAO + flight UPS8
Increasing solar activity - and the ionosphere going totally crazy:
METAR uplink for a KMIA - SAEZ intercontinental flight ... via Auckland!
MDPWI = Meteorological Data - Predicted Wind for FL 360 370 380 390

13074.0 kHz JFC Misaki Fisheries Radio, Japan
The date reads 5 1 31 = 2023 January 31
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft JA204P + N505DN + N26952 + RDPL188 + UK32103 + flight UAL98
CFB = Centralized Fault Book
FMS = Flight Management System
RDC = Route Data Calculation
TI2 = Terminal Information Request
WN = Warning Number, followed by the Date-Time Group

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-18916 + HL7795 + JA816P + N24980 + VN-A899 + flight UAL98
AGM = Miscellaneous Air/Ground Message
• Air and ground end systems include
(1) Datalink Application Service Element = CPDLC
(2) Aeronautical Telecommunication Network upper layers
(3) TP4 = Transport Protocol Class 4
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

518.0 kHz Kao-Hsiung Radio, Taiwan (Democratic Republic of China)
VTS = Vessel Traffic Service

518.0 kHz UFL Vladivostok Radio SE, Russian Federation

518.0 kHz Chukpy Radio, South Korea
JCS = Joint Chiefs of Staff

518.0 kHz XSZ Dalian Radio, China

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-327T + B-328M + B-2415 + B-5850 + B-6012 + B-6335 + B-8337 + 9V-SHA + flight CCA423
AGM = Miscellaneous Air/Ground Message
PDC = Pre-Departure Clearance
TI2 = Terminal Information Request
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

8424.0 kHz SVO Olympia Radio, Athens, Greece

518.0 kHz 9WW21 Miri Radio, Sarawak, Malaysia
Warnings still in force - received 291910Z JAN 2023!

8064.8 kHz Digital data station

11030.0 kHz VMC Charleville Meteo QLD, Australia

6565.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-326Z + B-8683 + B-18902 + B-18903 + HL7637 + N29977 + flight CPA838
Riding on the North Pacific Jet Stream over Japan
at 604 knots = 1119 kilometres per hour ...
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCA = Facilities Contact Advisory
FCP = Facilities Contact Response
FMH = Facilities Message Header = Flight Number
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft HS-TEN + HS-XTG + HS-XTH + JA826P + JA888A + VN-A892 + flight CES680
AGM = Miscellaneous Air/Ground Message
CDP = Computer Diagnostics Program
CFB = Centralized Fault Book
DFD = Digital Flight Data
EDP = Engine Display Panel
FWS = Flight Warning System
LGTM = Light Minus Turbulence = relatively weaker intensity
OCC = Operations Control Centre
WN = Warning Number, followed by the Date-Time Group
• Engine Cruise Report VTBS - RJTT ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

4209.5 kHz XVG Hai Phong Radio, Viet Nam

13988.5 kHz JMH4 Tokyo Meteo, Japan

8106.9 kHz SWA28 Athens Meteo, Greece

490.0 kHz VCO Canadian Coast Guard Port Caledonia NS, Canada

490.0 kHz EAR La Coruna Radio, Spain

490.0 kHz Hamburg Meteo, Germany
NCC = National Co-Ordination Centre
VTG = Verkehrstrennungsgebiet

490.0 kHz GCC Cullercoats Radio, United Kingdom

4610.0 kHz GYA Royal Navy London, United Kingdom

3881.0 kHz FAV22 French Army Mont-Valerien, France

6220.0 kHz IDN Italian Navy Napoli, Italy
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

12711.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

12711.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-32CF + B-305X + B-309F + B-6045 + B-6175 + B-6323 + B-8397 + JA205P + JA824P + PK-GMA + PK-GNG + flight CCA172
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
CIDS = Cabin Intercommunication Data System
FF = Fuel Flow (for engines 1 + 2)
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
PISA = Passenger Interface and Supply Adapter
REQFPN = FPL report request uplink
RMP = Radio Management Panel
SR = Seat Row
TI2 = Terminal Information Request

8424.0 kHz SVO Olympia Radio, Athens, Greece

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

6619.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-328P + B-8491 + B-8680 + HL8500 + JA214A + N101FE + VN-A888 + flight CSC698
AGM = Miscellaneous Air/Ground Message
DFD = Digital Flight Data
PACK = Pressurization Air Conditioning Kit
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

8416.5 kHz UAT Moscow Radio, Russian Federation
FSUE = Federal State Unitary Enterprise

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-6713 + N861FD + N884FD + TC-LGK + VT-IFK + VT-IVI + 9V-SKV + flight CES977
PACD is an ETOPS emergency alternate airport for trans-Pacific flights ...
AGM = Miscellaneous Air/Ground Message
GOC = Global Operations Control
GOCC = Global Operations Control Center
SCV = Surge Control Valve
WC = Weather Center
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FMH = Facilities Message Header = Flight Number
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

13312.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-MCA + B-306E + B-306E + B-325V + B-1567 + B-6045 + B-8977 + 9V-SMB + flight CSC891
Flight parameters and enroute weather ZWYN - ZSNJ and ZLXY - ZGGG ...
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
EIU = Engine Interface Unit
FADEC = Full Authority Digital Engine Control
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
NAI = Nacelle Anti-Ice
PRSOV = Pressure Regulating and Shut Off Valve
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
• Engine Cruise Report ZWYN - ZSNJ ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

8416.5 kHz NMC United States Coast Guard San Francisco CA, United States of America
NGA = National Geospatial-Intelligence Agency

8416.5 kHz NMC United States Coast Guard San Francisco CA, United States of America

518.0 kHz VAE Canadian Coast Guard Tofino BC, Canada
Amphitrite Point Lighthouse is 40 kilometres south of Tofino ...

518.0 kHz NOJ United States Coast Guard Kodiak, Alaska
BNM = Broadcast Notice to Mariners
NTM = Notice to Mariners

21934.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft C-GUBT + G-VNYC + HP1840 + N391HA + N625UP + N847FD + XA-VRY + XA-VSG + flight ETD93C
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
CFB = Centralized Fault Book
GOC = Global Operations Control
REQFPN = FPL report request uplink
RESREQ/AK = FMS downlink acknowledgement of a REQFPN uplink
TS = Time Stamp
WN = Warning Number, followed by the Date-Time Group

8412.5 kHz XSQ Guangzhou Radio, China
CMA = China Meteorological Administration
MSA = Maritime Safety Administration

8412.5 kHz XSQ Guangzhou Radio, China
CMA = China Meteorological Administration
MSA = Maritime Safety Administration

8948.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft CN-RGN + CN-ROS + D-AXGF + EI-MAE + N627UP + N762AV + N891FD + N29985 + flight LH009Z
AGM = Miscellaneous Air/Ground Message
BJR = Bonjour
CCO = Operations Control Centre
CDB = Commandant Du Bord
REQPWI = Predicted Wind Request for FL 390 370 350
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FMH = Facilities Message Header = Flight Number
FRP = Facilities Response
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

13324.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft N516DN + N886FD + flight AS0615
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

518.0 kHz EAV Valencia Radio, Spain

518.0 kHz ICH Italian Coast Guard La Maddalena Island, Italy
VTS = Vessel Traffic Service

518.0 kHz EAC Tarifa Radio, Spain

17919.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft JA805A + JA876A + N615UP + N624UP + N630UP + 9V-SGB + flight UAL202
AGM = Miscellaneous Air/Ground Message
DT = Destination, followed by the runway number
FN = Flight Number
TS = Time Stamp
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCA = Facilities Contact Advisory
FCP = Facilities Contact Response
FMH = Facilities Message Header = Flight Number
• Air and ground end systems include
(1) Datalink Application Service Element = CPDLC
(2) Aeronautical Telecommunication Network upper layers
(3) TP4 = Transport Protocol Class 4
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

12579.0 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina
RDP = Rio de la Plata

12579.0 kHz NMO United States Coast Guard Honolulu, Hawaii

12579.0 kHz NMO United States Coast Guard Honolulu, Hawaii

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

6652.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-LXB + HL8500 + VN-A509 + 9V-SGC + flight CES649
A NOTAM decoder can be found e.g. here
DFB = Digital Flight Book
• Engine Cruise Report WSSS - RKSI ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

518.0 kHz LGQ Rogaland Radio, Norway

12711.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

13315.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft PR-TYL + PR-YYI + flight IBE683
CG = Center of Gravity
DFB = Digital Flight Book
LD RD CD = Left - right - center tank fuel density
REQFPN = FPL report request uplink
REQPER = Request Performance Report
REQPRG = Request Flight Progress Report

490.0 kHz Grindavik Radio, Iceland
Faxafloa = Reykjavik Harbour
Landhelgisgaeslan = Coast Guard

490.0 kHz TFX Siglufjördur Radio, Iceland
Saudanes is the name of the lighthouse in that fjord ...
Landhelgisgaeslan = Coast Guard
Siglingavidvorun = Navigational Warning

490.0 kHz OST Oostende Radio, Belgium

5508.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft B-2094 + B-18903 + N890FD + XA-VSF + flight UAL219
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
CFD = Centralized Fault Display
DFD = Digital Flight Data
EPCS = Engine Propulsion Control System
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

518.0 kHz Balasore Radio, India

518.0 kHz Parangipettai Radio, India
IMD = India Meteorological Department

11387.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft A6-EVL + A7-ANO + N238NV + 9V-SGB + flight AC0845
ICERDO = Ice Radio = Reykjavik Air
• DELAY is a critical procedure, designed to prevent pilots
from acting on any old CPDLC messages
that might have been delayed in the network
The most serious of such cases would be
the pilot executing a clearance that was no longer valid
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft CS-TOO + EI-DIP + EI-KGI + JY-AYP + RA73273 + RA73294 + SU-GDX + UK32015 + YU-APN + flight UPS203
The INRANGE message announces the aircraft being within VHF range of the DS
CFB = Centralized Fault Book
CVDR = Cockpit Voice and Data Recorder
DA = Departure Airport
DFB = Digital Flight Book
DM = Time Stamp
DS = Destination Airport
ECAM = Electronic Centralized Aircraft Monitoring
EEC = Electronic Engine Controller
ERT = Estimated Ramp Time
FLR = Failure
FLSCU = Fuel Level Sensing Control Unit
FR = Fault Report, followed by the Date-Time Group
FWC = Flight Warning Computer
GPSSU = Global Positioning System Sensor Unit
IR = Inertial Reference
MMR = Multi-Mode Receiver
VSC = Vacuum System Controller
WN = Warning Number, followed by the Date-Time Group
• Engine Cruise Report LPPT - SBFZ ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
The Altitude Range Change Event is triggered
when the aircraft's altitude exceeds the altitude ceiling
or floor defined in the contract by the ground system

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

9165.0 kHz HLL Soul Meteo, South Korea
DFS = Digital Forecast System

9165.0 kHz HLL Soul Meteo, South Korea
DFS = Digital Forecast System

9165.0 kHz HLL Soul Meteo, South Korea

9165.0 kHz HLL Soul Meteo, South Korea

4209.5 kHz TAH Istanbul Radio, Turkey

4209.5 kHz TAH Istanbul Radio, Turkey

6619.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-18902 + B-18918 + 9V-SCM + flight CES990
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft C-FNND + N130FE + N503DN + N510DN + N612UP + N627UP + flight FX1314
Code figures for PANC runways braking action - see e.g. here
DFD = Digital Flight Data
MTC = Maintenance Technical Center
TI2 = Terminal Information Request
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FCA = Facilities Contact Advisory
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft C-FNND + flight MSR981
AFOB = Actual FOB
DXP = Dispatcher
EFOB = Estimated FOB
FOD = Fuel Over Destination
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FMH = Facilities Message Header = Flight Number
• Air and ground end systems include
(1) Datalink Application Service Element = CPDLC
(2) Aeronautical Telecommunication Network upper layers
(3) TP4 = Transport Protocol Class 4
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina
L6N = ACG Paranà on VHF - see here

16959.8 kHz FUJ French Navy Noumea, New Caledonia

16898.5 kHz XSG Shanghai Radio, China
Presumably local time used here since received (beyond schedule ...) at 0850 UTC ...

8927.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-18903 + N101FE + PK-BKF + 9V-SCC + 9V-SHF + flight UPS67
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCA = Facilities Contact Advisory
FCP = Facilities Contact Response
FMH = Facilities Message Header = Flight Number
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
• DELAY is a critical procedure, designed to prevent pilots
from acting on any old CPDLC messages
that might have been delayed in the network
The most serious of such cases would be
the pilot executing a clearance that was no longer valid
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

13324.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-LXJ + JA10VA + PK-SAH + RPC8397 + RPC8611 + RPC8783 + flight PR0100
ZFW + TOF = TOW - TIF = LAW
ADF = Automatic Direction Finder
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
EIS = Electronic Instrument System
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
LGTM = Light Minus Turbulence = relatively weaker intensity
VSC = Vacuum System Controller
The Lateral Deviation Change Event is triggered
when the aircraft's actual position exceeds a lateral distance parameter
from the aircraft's expected position on the active flight plan

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft N297FE + N885FD + 9V-SJC + flight AMX008
Some pretty special format for KIND runway 23L data ...
• Air and ground end systems include
(1) Datalink Application Service Element = CPDLC
(2) Aeronautical Telecommunication Network upper layers
(3) TP4 = Transport Protocol Class 4
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft B-18901 + N113FE + N297FE + N876FD + N888FD + 9V-SCD + 9V-SJC + flight UAL60
Code figures for KIND runways braking action - see e.g. here
DFD = Digital Flight Data
HIWAS = Hazardous Inflight Weather Advisory Service
TI2 = Terminal Information Request
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FMH = Facilities Message Header = Flight Number
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

518.0 kHz HSA Bangkok Radio, Thailand
BKK = Bangkok
005671000 is the station's MMSI (Maritime Mobile Service Identity) code

518.0 kHz XYM Myeik Radio, Myanmar
ZWP = Zawtika Well Pipeline

4346.0 kHz NMC United States Coast Guard San Francisco CA, United States of America

4346.0 kHz NMC United States Coast Guard San Francisco CA, United States of America
NHC = National Hurricane Center

17919.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-LRO + B-LXG + B-325A + B-325R + B-2031 + B-6548 + JA205P + VN-A889 + flight CSC891
AGM = Miscellaneous Air/Ground Message
CDP = Computer Diagnostics Program
DFD = Digital Flight Data
EDP = Engine Display Panel
FWS = Flight Warning System
TI2 = Terminal Information Request
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

6619.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-1067 + B-2410 + B-8503 + HL7640 + JA204P + 9V-SHO + flight UPS108
Code figures for RCTP runways braking action - see e.g. here
AGM = Miscellaneous Air/Ground Message
TI2 = Terminal Information Request
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

4209.5 kHz XSQ Guangzhou Radio, China
MSA = Maritime Safety Administration

518.0 kHz L2G Argentinian Coast Guard Buenos Aires, Argentina

518.0 kHz L2T Argentinian Coast Guard Mar del Plata, Argentina

518.0 kHz NMA United States Coast Guard Miami FL, United States of America
BNM = Broadcast Notice to Mariners

518.0 kHz NMN United States Coast Guard Norfolk VA, United States of America
BNM = Broadcast Notice to Mariners

10081.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft F-HJAZ + JY-AYV + RA73757 + SU-GEJ + T7-MRF + flight TRK1

3855.0 kHz DDH3 Hamburg Meteo, Germany

6349.8 kHz FUE French Navy Brest, France
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

518.0 kHz JGC Yokohama Radio, Japan

8302.0 kHz XSG Shanghai Radio, China
CMA = China Meteorological Administration

518.0 kHz NMW United States Coast Guard Astoria OR, United States of America

13276.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft C-GTSZ + CN-RGI + EC-MCU + G-VJAZ + OH-LWN + YV3533 + flight ACA068
AGM = Miscellaneous Air/Ground Message
AMU = Audio Management Unit
CCO = Operations Control Centre
CFB = Centralized Fault Book
CIDS = Cabin Intercommunication Data System
ELMU = Electrical Load Management Unit
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
IPCU = Ice Protection Control Unit
ND = Navigation Display
RCCB = Remote Controlled Circuit Breaker
WN = Warning Number, followed by the Date-Time Group
WXR = Weather Radar
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

518.0 kHz 9HD Valetta Radio, Malta

518.0 kHz SVK Kerkyra Radio, Greece
Message KA22 has been cancelled in the meantime ...

6652.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft HL7616 + HL8502 + 9V-SCA + 9V-SCB + flight CES900
Code figures for PANC runways braking action - see e.g. here
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
CIDS = Cabin Intercommunication Data System
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
IPCU = Ice Protection Control Unit
TI2 = Terminal Information Request
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
• DELAY is a critical procedure, designed to prevent pilots
from acting on any old CPDLC messages
that might have been delayed in the network
The most serious of such cases would be
the pilot executing a clearance that was no longer valid
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-30CL + B-303F + B-308E + B-8163 + B-8743 + PK-SAZ + flight CES524
CFB = Centralized Fault Book
DME = Distance Measuring Equipment
FF = Fuel Flow (for engines 1 + 2)
FR = Fault Report, followed by the Date-Time Group
REQFPN = FPL report request uplink
• Engine Cruise Report VMMC - ZSPD ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
Note that in this screenshot, however, the messages are not table-formatted as in the example below;
anyway, standard row identifiers such as CC C0 C1 CE ... can be easily identified after the slash ...
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

518.0 kHz XSG Shanghai Radio, China

5502.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-LRG + HL7792 + N896FD + flight CPA289
AGM = Miscellaneous Air/Ground Message
CI = Consistency Index
FOD = Fuel Over Destination
LMTOGW = Limiting Maximum Operational Take-Off Gross Weight
GOCC = Global Operations Control Center
TI2 = Terminal Information Request
TOCO = Take-Off Computation

8658.0 kHz JFX Kagoshima Fisheries Radio, Japan
Misaki frozen tuna market prices ...
The date reads 5 1 14 = 2023 January 14
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

518.0 kHz 9VG Singapore Radio, Singapore
SPOCC = Singapore Port Operations Control Centre
Ships piloting and routing ...
DFT = Draft
DWT = Dead Weight Tonnage
OFB = One Fathom Bank = Sandbank Shoal at N0305 E10040
1.8288 metres = 1 fathom = 2 yards = 6 feet = 18 hands = 72 inches ...
TSS = Traffic Separation Scheme

11090.0 kHz KVM70 Honolulu Meteo, Hawaii

8658.0 kHz JFX Kagoshima Fisheries Radio, Japan
Navigational warnings for NAVAREAs 10 and 11
The date reads 5 1 13 = 2023 January 13
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft G-EODS + JA12KZ + JA827A + N495AS + flight QTR39B
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft B-1297 + C-FIUJ + N616UP + flight UPS36
Code figures for CYVR runways braking action - see e.g. here
AGFSR = Air to Ground Flight Situation Report
CFD = Centralized Fault Display
MOC = Meteorological Operations Center
MTC = Maintenance Technical Center
RSC = Runway Surface Condition
TI2 = Terminal Information Request
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

13276.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft B-209X + N628UP + N992AV + flight IBE640
A NOTAM decoder can be found e.g. here
DT = Destination, followed by the runway number
FN = Flight Number
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

4209.5 kHz XSV Tianjin Radio, China
MSA = Maritime Safety Administration

10081.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft RA73309 + RA73758 + RA73835 + flight CES715
Perfect OOOI ...
CFB = Centralized Fault Book
FLR = Failure
FLSCU = Fuel Level Sensing Control Unit
FR = Fault Report, followed by the Date-Time Group
GPSSU = Global Positioning System Sensor Unit
MMR = Multi-Mode Receiver
WN = Warning Number, followed by the Date-Time Group

4209.5 kHz XVN Nha Trang Radio, Viet Nam
Warnings still in force - received 101620Z JAN 2023

5100.0 kHz VMC Charleville Meteo QLD, Australia

4209.5 kHz XSQ Guangzhou Radio, China
What those megalomaniac Communist Chinese call "Zengmu Ansha Reef"
is in fact James Shoal, recognized by the Brits in the early 19th Century
and listed on the British Admiralty Chart in the 1870s (!).
Needless to say, located a mere 83 kilometres off Bintulu in Sarawak,
BETING SERUPAI belongs perfectly to the continental shelf and EEZ of MALAYSIA,
and has never repeat NEVER been a territory of Communist "China"
that is more than 1,800 kilometres repeat
MORE THAN ONE THOUSAND EIGHT HUNDRED KILOMETRES away!
Alamak!! Tak boleh tahan lah!!!

4209.5 kHz XVN Nha Trang Radio, Viet Nam

13324.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-5830 + HL7609 + JA819P + P4-IFD + 9V-SGA + flight GTI862
AGM = Miscellaneous Air/Ground Message
LGTP = Light Plus Turbulence = relatively greater intensity
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCA = Facilities Contact Advisory
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

22448.8 kHz FUV French Navy Jibuti, Djibouti
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

518.0 kHz NMC United States Coast Guard San Francisco CA, United States of America
BNM = Broadcast Notice to Mariners

21949.0 kHz H08 HFDL Johannesburg Air, South Africa (Republic of), + aircraft A6-AEI + SU-GEF + 4R-EXS + flight KNE220 + RAM208
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
CFB = Centralized Fault Book
REQPWI = Predicted Wind Request for FL 340 320 300 280
RESPWI/AC = FMS downlink acceptance and insertion of PWI = Predicted Wind uplink data
RESPWI/AK = FMS downlink acknowledgement of PWI = Predicted Wind uplink data
TI2 = Terminal Information Request
WN = Warning Number, followed by the Date-Time Group

11318.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft CS-TKQ + HL8033 + PR-TYQ + PR-YYD + flight AVA261
DT = Destination, followed by the runway number
FN = Flight Number
REQPWI = Predicted Wind Request for FL 380 360 340 320
• DELAY is a critical procedure, designed to prevent pilots
from acting on any old CPDLC messages
that might have been delayed in the network
The most serious of such cases would be
the pilot executing a clearance that was no longer valid
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

13988.5 kHz JMH4 Tokyo Meteo, Japan

13988.5 kHz JMH4 Tokyo Meteo, Japan

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft ET-ATG + HL7210 + HL8258 + JA817P + 9V-SMA + 9V-SMM + flight ANA897
AGM = Miscellaneous Air/Ground Message
The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint

The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-326X + B-329V + B-8376 + ET-AOS + ET-ATG + HZ-NS22 + TC-LGL + VT-IFS + flight UAE94G
HF frequency should read 11300 ...
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
WN = Warning Number, followed by the Date-Time Group
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

518.0 kHz JNX Kushiro Radio, Japan

16806.5 kHz NMC United States Coast Guard San Francisco CA, United States of America

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft EI-MAE + HZ-NS32 + HZ-NS53 + RA73771 + RA73789 + SU-GEE + ZS-SZJ + 7T-VJV + flight 8U1978
AMDAR = Aircraft Meteorological Data Relay FAOR - FZAA
Funny waypoint name ... CREEP!
AA = Arrival Airport
CFB = Centralized Fault Book
DA = Departure Airport
DFB = Digital Flight Book
DT = Destination, followed by the runway number
FN = Flight Number
REQPWI = Predicted Wind Request for FL 380 360 340
RESPWI/AC = FMS downlink acceptance and insertion of PWI = Predicted Wind uplink data
RESPWI/AK = FMS downlink acknowledgement of PWI = Predicted Wind uplink data
TS = Time Stamp
WN = Warning Number, followed by the Date-Time Group
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-326D + B-18902 + B-18917 + HL8293 + 9V-SJB + 9V-SJE + flight CCA857
TPEOD = Taipei Operational Department
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FMH = Facilities Message Header = Flight Number
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

518.0 kHz Don Sak Radio, Thailand
005671000 is the station's MMSI (Maritime Mobile Service Identity) code
See 5 AUG 2021 NAVTEX Panel Report

518.0 kHz LFO Oerlandet Radio, Norway

4235.0 kHz NMF United States Coast Guard Boston MA, United States of America

4235.0 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction
NHC = National Hurricane Center
OPC = Ocean Prediction Center
WPC = Weather Prediction Center

4235.0 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction
NHC = National Hurricane Center

4235.0 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction

8939.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-5830 + N503DN + PR-TYU + RPC8398 + 9M-MAD + 9V-SHQ + 9V-SME + flight OZ0578
AI = Arrival Information
CFB = Centralized Fault Book
CFDS = Centralized Fault Display System
DI = Departure Information
FDU = Fire Detection Unit
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
GC = Ground Connections
TI2 = Terminal Information Request
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FMH = Facilities Message Header = Flight Number
Code figures for EGLL runways braking action - see e.g. here
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-32CX + B-1611 + B-6330 + B-8605 + 9V-SJB + flight CES215
TI2 = Terminal Information Request
• Engine Cruise Report ZSCN - ZGZJ ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
Note that in this screenshot, however, the messages are not table-formatted as in the example below;
anyway, standard row identifiers such as CC C0 C1 CE ... can be easily identified after the slash ...
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

8939.0 kHz H10 HFDL Muan Air, South Korea, + aircraft HL8500 + UK78702 + 9M-MAC + flight CES270
TI2 = Terminal Information Request
The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

10027.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft JA202P + RPC8789 + VT-IFS + flight SIA903
AGM = Miscellaneous Air/Ground Message
MCC = Maintenance Control Centre
OCC = Operations Control Centre
The Altitude Range Change Event is triggered
when the aircraft's altitude exceeds the altitude ceiling
or floor defined in the contract by the ground system

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

21937.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-2290 + B-2411 + B-8799 + JA808A + JA838A + JA900A + JA902P + JA936A + flight UPS67D
OLIVE = code word for - your guess ...
AGM = Miscellaneous Air/Ground Message
LGTP = Light Plus Turbulence = relatively greater intensity
NRT = Narita
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

6565.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft EI-MAA + JA817A + N454PA + N505DN + N852FD + N15969 + N26960 + RPC8398 + flight AS0316 + SIA32
Loadsheet message is incomplete ...
AGM = Miscellaneous Air/Ground Message
DOI = Dry Operating Index
CFD = Centralized Fault Display
ECS = Environmental Control System
GOCC = Global Operations Control Centre
PWI = Meteorological Data - Predicted Wind for FL 390
RESPWI/AC = FMS downlink acceptance and insertion of PWI = Predicted Wind uplink data
RESPWI/AK = FMS downlink acknowledgement of PWI = Predicted Wind uplink data
ZFW + TOF = TOW - TIF = LAW
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

490.0 kHz EJM Irish Coast Guard Malin Head, Ireland

518.0 kHz Muttam Point Radio, India
IMD = India Meteorological Department

518.0 kHz Vengurla Point Radio, India
IMD = India Meteorological Department
PPAA = PILOT / PILOT MOBIL / PILOT SHIP
= WMO code form for an upper-wind report

518.0 kHz Veraval Radio, India
IMD = India Meteorological Department

5156.8 kHz TBB Turkish Navy Ankara, Turkey
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

4209.5 kHz XVG Hai Phong Radio, Viet Nam

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft EC-NGY + F-HROK + 5A-LAH + 5A-WLB + flight SU1059
AFS = Auto Flight System
CFB = Centralized Fault Book
CFDS = Centralized Fault Display System
CIDS = Cabin Intercommunication Data System
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
ECAM = Electronic Centralized Aircraft Monitoring
FDIMU =Flight Data Interface Management Unit
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
IR = Inertial Reference
MMR = Multi-Mode Receiver
PHC = Probe Heat Computer
PISA = Passenger Interface and Supply Adapter
SDAC = System Data Acquisition Computer
SR = Seat Row
WN = Warning Number, followed by the Date-Time Group
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

21955.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft ES-SAZ + G-VWHO + JY-AYV + YL-LDU + ZS-SZD + flight VRE789
CFB = Centralized Fault Book
CSAS = Conditioned Service Air System
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
DT = Destination, followed by the runway number
FN = Flight Number
FR = Fault Report, followed by the Date-Time Group
FTIS = Fuel Tank Inerting System
REQPWI = Predicted Wind Request for FL 360
SFCS = Secondary Flight Control System
TS = Time Stamp
WN = Warning Number, followed by the Date-Time Group
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

518.0 kHz XSX Chi-Lung Radio, Taiwan (Democratic Republic of China)

6652.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft HL8500 + N877FD + N889FD + PK-STZ + flight UAE431
SCV = Surge Control Valve
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

16826.3 kHz XSQ Guangzhou Radio, China
CMA = China Meteorological Administration
MSA = Maritime Safety Administration

518.0 kHz SUK Quseir Radio, Egypt

518.0 kHz UDN Novorossiysk Radio, Russian Federation

518.0 kHz 3VL Kelibia Radio, Tunisia
NTM = Notice to Mariners

518.0 kHz SUH Alexandria Radio, Egypt
BA = British Admiralty
EAFMS = Egyptian Authority for Maritime Safety
This is the former PLA (Ports and Lighthouses Administration) ...
IEOC = International Egyptian Oil Company
SAIPEM = Societa Anonima Italiana Perforazioni e Montaggi (Italy)

518.0 kHz TAH Istanbul Radio, Turkey

518.0 kHz SUZ Serapeum Radio, Egypt
BA = British Admiralty

6652.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-5949 + HL7754 + HL8500 + N108FE + 9V-SCC + flight SIA37
Code figures for RCTP runways braking action - see e.g. here
CFB = Centralized Fault Book
DFD = Digital Flight Data
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
RMP = Radio Management Panel
TI2 = Terminal Information Request
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

486.0 kHz XSG Shanghai Radio, China
Chinese teleprinter code after Latin alphabet header
Presumably local time used here since received (beyond schedule ...) at 1650 UTC ...
According to this NAVAREA 11 document, XSG uses indeed
transmitter identification character Q on both 518 and 486 kHz

2628.0 kHz VMC Charleville Meteo QLD, Australia
MSLP = Mean Sea Level Pressure

2628.0 kHz VMC Charleville Meteo QLD, Australia

2628.0 kHz VMC Charleville Meteo QLD, Australia
MSLP = Mean Sea Level Pressure

2628.0 kHz VMC Charleville Meteo QLD, Australia

518.0 kHz NMG United States Coast Guard New Orleans LA, United States of America

16559.0 kHz XSG Shanghai Radio, China
CMA = China Meteorological Administration

16559.0 kHz XSG Shanghai Radio, China
CMA = China Meteorological Administration

6340.5 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction

6340.5 kHz NMF United States Coast Guard Boston MA, United States of America

6340.5 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction

Strong solar activity allows excellent HF reception on 22 MHz and higher
This sonagram of 28 December 2022 shows perfect HFDL signals
on 21931 kHz (Muan Air, South Korea)
21934 kHz (San Francisco Air CA, United States of America)
and 21937 kHz (Hoolehua Air, Molokai, Hawaii)

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B329C + B-6523 + EI-KBL + 9V-SMN + flight CSC878
AGM = Miscellaneous Air/Ground Message
• Engine Cruise Report ZGSZ - ZUUU ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-30DR + B-327E + B-8119 + VN-A889 + VT-IFM + VT-VTZ + flight CES548
Flight parameters and enroute weather ZSPD - ZUYB and ZGZJ - ZPPP ...
CDP = Computer Diagnostics Program
DFB = Digital Flight Book
DFD = Digital Flight Data
EDP = Engine Display Panel
FWS = Flight Warning System

518.0 kHz Keating Point Radio, Andaman Islands, India
INW = Indian Navigational Warning

11090.0 kHz KVM70 Honolulu Meteo, Hawaii
ITCZ = Inter-Tropical Convergence Zone

518.0 kHz VBA Canadian Coast Guard Pass Lake ONT, Canada
The ice concentration is given in tenths
BW = Bergy Water
CONS = Consolidated
FYI = First-Year Ice
GI = Grey Ice
GWI = Grey-White Ice
IF = Ice Free
MEDI = Medium Lake Ice
MYI = Multi-Year Ice
NI = New Ice
OI = Old Ice
OW = Open Water
THI = Thin Lake Ice
TKI = Thick Lake Ice
TR = Trace Of
SYI = Second-Year Ice
VTKI = Very Thick Lake Ice

518.0 kHz VBR Canadian Coast Guard Ferndale ONT, Canada

518.0 kHz ZBM Hamilton Harbour Radio, Bermuda

13321.0 kHz H08 HFDL Johannesburg Air, South Africa (Republic of), + aircraft HZ-AQK + HZ-NS55 + PK-BKJ + PK-SAZ + flight RAM208
CFB = Centralized Fault Book
DFB = Digital Flight Book
WN = Warning Number, followed by the Date-Time Group
• Engine Cruise Report WIMM - WIII ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
Note that in this screenshot, however, the text is not table-formatted;
anyway, standard row identifiers such as CC C0 C1 CE ... can be easily identified after the slash ...

9165.0 kHz HLL Soul Meteo, South Korea

9165.0 kHz HLL Soul Meteo, South Korea
GK2A = GEO KOMP Sat 2A = Geostationary Korea Multi Purpose Satellite

9165.0 kHz HLL Soul Meteo, South Korea

518.0 kHz EQI Abbas Radio, Iran

16953.3 kHz 6WW French Navy Dakar, Senegal

11318.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft EI-MAA + HL8033 + PR-TYK + PR-TYM + PR-TYP + PR-TYV + PR-YYD + PR-YYG + flight LAN705
CG = Center of Gravity
DFB = Digital Flight Book
DT = Destination, followed by the runway number
FN = Flight Number
• Engine Cruise Report SBSV - SBFI ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
Note that in this screenshot, however, the text is not table-formatted;
anyway, standard row identifiers such as CC C0 C1 CE ... can be easily identified after the slash ...
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

518.0 kHz LZW Varna Radio, Bulgaria
VTS = Vessel Traffic Service

8416.5 kHz UAT Moscow Radio, Russian Federation

490.0 kHz CBT Talcahuano Radio, Chile

518.0 kHz Bjuroklubb Radio, Sweden

10093.0 kHz H09 HFDL Barrow Air, Alaska, + aircraft A6-EVC + RA73673
ADR = Air Data Reference
CFB = Centralized Fault Book
WN = Warning Number, followed by the Date-Time Group
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

4209.5 kHz SVH Iraklion Radio, Greece

21997.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + flight AVA249 + IBE683

21997.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft HC-CTX + HL8033 + N118FE + N950AV + flight IBE683
DT = Destination, followed by the runway number
FN = Flight Number
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

6661.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft N45905 + flight UAL26
HW = Head Wind
PACK = Pressurization Air Conditioning Kit
TI2 = Terminal Information Request
XW = Cross Wind

6529.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft CC-BBH + CC-BGA + G-VDIA + 9V-SGD + flight 8U0ONO
CDP = Computer Diagnostics Program
DFD = Digital Flight Data
EDP = Engine Display Panel
FWS = Flight Warning System
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
• Air and ground end systems include
(1) Datalink Application Service Element = CPDLC
(2) Aeronautical Telecommunication Network upper layers
(3) TP4 = Transport Protocol Class 4
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

6529.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft CC-BGA + C-FKSV + CN-ROY + RA73228 + flight KW22NU
AGM = Miscellaneous Air/Ground Message
BCAT1 = Below Category 1
CCO = Operations Control Centre
DT = Destination, followed by the runway number
FN = Flight Number
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

8977.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft JY-AYT + N27908 + RA73178 + RA73730 + SU-GDC + 5Y-CYB + flight EVE825
ATSU = Air Traffic Service Unit
CFB = Centralized Fault Book
CFDS = Centralized Fault Display System
DFB = Digital Flight Book
EENT = End of Evening Nautical Twilight
ETP = Equitime Point
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
MMR = Multi-Mode Receiver
WN = Warning Number, followed by the Date-Time Group
• Engine Cruise Report LEBL - OJAI ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
Note that in this screenshot, however, the text is not table-formatted;
anyway, standard row identifiers such as CC C0 C1 CE ... can be easily identified after the slash ...

6030.0 kHz China National Radio DRM transmission
decoded with the Kiwi-SDR extension feature

5195.0 kHz DRA5 Kiel, Germany

13550.5 kHz ZKLF Auckland Meteo, New Zealand

11030.0 kHz VMC Charleville Meteo QLD, Australia
MSLP = Mean Sea Level Pressure

17016.8 kHz KPH San Francisco Radio CA, United States of America

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + flight AC0033 + AIC308

518.0 kHz XVT Da Nang Radio, Viet Nam

17151.2 kHz NMC United States Coast Guard San Francisco CA, United States of America
NCEP = National Centers for Environmental Prediction

17151.2 kHz NMC United States Coast Guard San Francisco CA, United States of America
NCEP = National Centers for Environmental Prediction

17151.2 kHz NMC United States Coast Guard San Francisco CA, United States of America
NCEP = National Centers for Environmental Prediction

518.0 kHz 4XO Haifa Radio, Israel
BA = British Admiralty
NTM = Notice to Mariners

3585.0 kHz HLL8 Soul Meteo, South Korea

4210.5 (not 4209.5!) kHz XSQ Guangzhou Radio, China
N/W = Nautical Warning
Characters in brackets denote the Latin alphabet
The four-figure groups without brackets
are Chinese ideographs

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + flight ANA897

8416.5 kHz VFF Canadian Coast Guard Iqaluit NUN, Canada

8416.5 kHz VFF Canadian Coast Guard Iqaluit NUN, Canada

16963.3 kHz FUF French Navy Fort de France, Martinique
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

8977.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft C-FVND + D-AXGF + EI-KDF + F-HRBH + JY-AYT + JY-AYU + N621UP + flight U60266
EFB = Electronic Flight Bag
MCC = Maintenance Control Centre
MOC = Meteorological Operations Center
MTC = Maintenance Technical Center
OCC = Operations Control Centre
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

8977.0 kHz H03 HFDL Reykjavik Air, Iceland, + A7-AMJ + aircraft B-307Y + EI-KGG + N621UP + N27908 + RA73229 + flight IBE625
The INRANGE message announces the aircraft being within VHF range of the DS
DS = Destination Airport
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
• DELAY is a critical procedure, designed to prevent pilots
from acting on any old CPDLC messages
that might have been delayed in the network
The most serious of such cases would be
the pilot executing a clearance that was no longer valid
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

518.0 kHz NMF United States Coast Guard Boston MA, United States of America
BNM = Broadcast Notice to Mariners

12666.3 kHz FUM French Navy Papeete, Tahiti, Polynesia (French)
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

11184.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft B-2098 + EI-KDD + EI-KGE + EI-KGF + OY-KAL + RA73119 + RA73231 + flight ABY510
DT = Destination, followed by the runway number
FN = Flight Number
REQPWI = Predicted Wind Request for FL 360 340 320 300
RESPWI/AK = FMS downlink acknowledgement of PWI = Predicted Wind uplink data
PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

11318.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft HL8033 + HL8259 + N599AV + 5Y-KYD + flight IBE68
Increasing solar activity - and the ionosphere going totally crazy:
METAR uplink and POSREP downlink for a HKJK - FIMP regional flight ... via Bolivia!
MDPWI = Meteorological Data - Predicted Wind for FL 380 360 340 320
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

12695.5 kHz KFS San Francisco Radio CA, United States of America
MMP = Masters, Mates and Pilots

518.0 kHz VRX Hong Kong Radio, China
Nice to see VRX uses intentionally
the internationally recognized British names
for those island groups in the South China Sea
and not those absurd fantasy names
applied by aggressive Communist China
that is going to grab every shoal all the way down
to the shores of Melayu dan Singapura -
more than 1,800 kilometres away from Hainan!
Alamak!! Tak boleh tahan lah!!!

3247.4 kHz ZKLF Auckland Meteo, New Zealand

4209.5 kHz XVG Hai Phong Radio, Viet Nam

518.0 kHz Thailand
BKK = Bangkok
This is not HSA, but most likely one of the new NAVTEX stations
announced in the 5 AUG 2021 NAVTEX Panel Report

518.0 kHz VAJ Canadian Coast Guard Prince Rupert BC, Canada
Haida Gwaii = ex Queen Charlotte Islands

518.0 kHz CBP Puerto Montt Radio, Chile

16907.5 kHz JFA Funabashi Fisheries Radio, Japan
NOAA satellite settings for JRC / FURUNO fish finder equipment ...
The date reads 4 11 6 = 2022 November 6
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

4209.5 kHz XSG Shanghai Radio, China

490.0 kHz Sellia Marina Radio, Italy

4209.5 kHz XVN Nha Trang Radio, Viet Nam

11348.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft CN-ROB + HZ-NS22 + HZ-NS35 + OE-LZF + SU-GEI + flight TP1359
AGM = Miscellaneous Air/Ground Message
TI2 = Terminal Information Request

518.0 kHz ESA Tallinn Radio, Estonia

6661.0 kHz H04 HFDL Riverhead Air NY, United States of America, + flight FX1410

518.0 kHz PKX Jakarta Radio, Indonesia
TS = Tropical Storm

8939.0 kHz H10 HFDL Muan Air, South Korea, + flight AAR796 + CAL052

12684.0 kHz Digital data station

4209.5 kHz XVG Hai Phong Radio, Viet Nam

8894.0 kHz H11 HFDL Panama City Air, Panama, + aircraft C-FGDX + N420LA + N608UP + N649FE + flight AC0322 + RJA272
DFD = Digital Flight Data
TI2 = Terminal Information Request
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

11354.0 kHz H09 HFDL Barrow Air, Alaska, + flight ACA850 + 7G0014

11184.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft A6-EUM + EI-KDE + F-HRBG + RA73231 + UK32012 + flight UAL933
TI2 = Terminal Information Request
The INRANGE message announces the aircraft being within VHF range of the DS
LIDO = Lufthansa Integrated Dispatch Operation =
FMS software used by 180+ airlines worldwide
• DELAY is a critical procedure, designed to prevent pilots
from acting on any old CPDLC messages
that might have been delayed in the network
The most serious of such cases would be
the pilot executing a clearance that was no longer valid
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

518.0 kHz NMR United States Coast Guard San Juan, Puerto Rico

7646.0 kHz DDH7 Hamburg Meteo, Germany

17928.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft F-HJAZ + 5A-ONO + 5Y-KYF + flight RZO127
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
TS = Time Stamp
• Engine Cruise Report HLLS - HLLB ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
Note that in this screenshot, however, the messages are not table-formatted as in the example below;
anyway, standard row identifiers such as CC C0 C1 CE ... can be easily identified after the slash ...

6565.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + flight AS0891 + AVA975

518.0 kHz JNR Moji Radio, Japan

518.0 kHz L3B Argentinian Coast Guard Comodoro Rivadavia, Argentina

518.0 kHz XSI Sanya Radio, China

7795.0 kHz JMH2 Tokyo Meteo, Japan

8477.3 kHz FUX French Forces Le Port de la Riviere des Galets, Reunion
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

4296.0 kHz Digital data station, Japan
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

8570.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

10093.0 kHz H09 HFDL Barrow Air, Alaska, + aircraft A6-EVF + EI-EJL + JA816A + flight TS0093
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FCA = Facilities Contact Advisory
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FCP = Facilities Contact Response
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

8416.5 kHz LGS Svalbard Radio, Spitsbergen, Norway
002570000 is the station's MMSI (Maritime Mobile Service Identity) code

13321.0 kHz H08 HFDL Johannesburg Air, South Africa (Republic of), + aircraft ZS-SXM + 3B-NCF + flight CPA252 + MAU14
ZUR = Zuidafrikaanse Radio = SAA Operations Control Jo'burg

11184.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft EI-GAL + JY-AYQ + N20904 + RA73305 + flight SU1692
DS = Destination Airport
The INRANGE message announces the aircraft being within VHF range of the DS
TI2 = Terminal Information Request

11184.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft B-8577 + C-GOIR + RA73151 + flight TS0189
Fault report in XML format ...
RA73151 is yet another Airbus A350-941 aircraft of Aeroflot
leased from SMBC Aviation Capital
(= Sumitomo Mitsui Banking Corporation Japan) in Ireland
and orginally registered as VP-BXP in Bermuda
and "re-registered" (read: seized) since the start
of Putin's war against Ukraine under the new callsign series RA73...
Embarrassing, however, that these idiots forgot to re-program
the on-board data management and reporting system that still shows VP-BXP ;-)))
AAP = Aft Attendant Panel
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
CIDS = Cabin Intercommunication Data System
CMS = Cabin Management System
MDPWI = Meteorological Data - Predicted Wind for FL 380 360 341
REQPWI = Predicted Wind Request for FL 380 360 341
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

11184.0 kHz H03 HFDL Reykjavik Air, Iceland, + flight MAS4

518.0 kHz SVH Iraklion Radio, Greece

8894.0 kHz H11 HFDL Panama City Air, Panama, + aircraft N741AV + PR-YYI + flight FX1283
MDPWI = Meteorological Data - Predicted Wind for FL 390 350

8582.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil
BBXX AAXX = SHIP SYNOP
= WMO code form for a report of surface observation

11090.0 kHz KVM70 Honolulu Meteo, Hawaii

11090.0 kHz KVM70 Honolulu Meteo, Hawaii

11090.0 kHz KVM70 Honolulu Meteo, Hawaii
ITCZ = Inter-Tropical Convergence Zone
TD = Tropical Depression

490.0 kHz GNI Niton Radio, United Kingdom

10093.0 kHz H09 HFDL Barrow Air, Alaska, + aircraft A6-EVI + A6-EVJ + JA382A + N625UP + RA73678 + flight SIA208
Mahalo = Thank you
CFD = Centralized Fault Display
ECS = Environmental Control System
HNLOC = Honolulu Operations Control
• DELAY is a critical procedure, designed to prevent pilots
from acting on any old CPDLC messages
that might have been delayed in the network
The most serious of such cases would be
the pilot executing a clearance that was no longer valid
• Code figures for EFHK runways braking action - see e.g. here
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

8191.0 kHz RMP Commonwealth of Independent States Navy Kaliningrad, Russian Federation

10081.0 kHz H07 HFDL Shannon Air, Ireland, + flight AIC147 + CCA581

17928.0 kHz H17 HFDL Telde Air, Canary Islands, + flight KNE111

9165.0 kHz HLL Soul Meteo, South Korea

518.0 kHz Parangipettai Radio, India
IMD = India Meteorological Department

12386.0 kHz Digital data station, Japan
32 channels + continuous pilot tone on the left ...

8927.0 kHz H16 HFDL Barrigada Air, Guam, + flight ANA224 + ANA879

518.0 kHz Fuzhou Radio, China

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + flight DAL296 + KAL017

13988.5 kHz JMH4 Tokyo Meteo, Japan

10093.0 kHz H09 HFDL Barrow Air, Alaska, + aircraft CN-RGZ + JA15KZ + N605UP + N858FD + N868FD + flight TS0862
CCO = Operations Control Centre
CFD = Centralized Fault Display
TI2 = Terminal Information Request
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

8894.0 kHz H11 HFDL Panama City Air, Panama, + aircraft N126FE + N542LA + PR-YYD + XA-AMR + XA-VSF + 9V-SGA + flight AVA208
GOCC = Global Operations Control Center
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

8834.0 kHz H08 HFDL Johannesburg Air, South Africa (Republic of), + flight ETD43R + QTR4J

8834.0 kHz H08 HFDL Johannesburg Air, South Africa (Republic of), + aircraft A6-EIS + SU-GDA + SU-GEA + SU-GEF + flight HY0278
Corrupted parsed data ...
CFB = Centralized Fault Book
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
SDU = Satellite Data Unit
WN = Warning Number, followed by the Date-Time Group
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

8894.0 kHz H11 HFDL Panama City Air, Panama, + aircraft LV-KAN + N120FE + N576UP + XA-VSG + flight AVA023
DFB = Digital Flight Book
FSM = Flight System Message
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FMH = Facilities Message Header = Flight Number
• Engine Cruise Report SAEZ - KJFK ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...

10063.0 kHz H11 HFDL Panama City Air, Panama, + aircraft CC-CWY + N873FD + XA-MFG + 9V-SMS + flight EVE858
SCV = Surge Control Valve
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

490.0 kHz Porto Santo Radio, Madeira

518.0 kHz ZSC Cape Town Radio, South Africa (Republic of)

7795.0 kHz JMH2 Tokyo Meteo, Japan

8894.0 kHz H11 HFDL Panama City Air, Panama, + flight LAN622

518.0 kHz UFO Kholmsk Radio FE, Russian Federation

518.0 kHz VCG Canadian Coast Guard Moisie QUE, Canada

19448.5 kHz Digital data station

13882.5 kHz DDK6 Hamburg Meteo, Germany

12412.5 kHz NOJ United States Coast Guard Kodiak, Alaska

518.0 kHz JNL Otaru Radio, Japan

12412.5 kHz NOJ United States Coast Guard Kodiak, Alaska

12412.5 kHz NOJ United States Coast Guard Kodiak, Alaska
NCEP = National Centers for Environmental Prediction

12412.5 kHz NOJ United States Coast Guard Kodiak, Alaska
NCEP = National Centers for Environmental Prediction

518.0 kHz SVL Limnos Radio, Greece

518.0 kHz LGT Tjoeme Radio, Norway

518.0 kHz IQM Mondolfo Radio, Italy

518.0 kHz 5BA Nicosia Radio, Cyprus
JRCC = Joint Rescue Coordination Centre

8486.3 kHz CTA Portuguese Navy Lisbon, Portugal

490.0 kHz EAL Las Palmas Radio, Canary Islands

12668.3 kHz FUG French Navy Saissac, France

518.0 kHz PBK Netherlands Coast Guard Ijmuiden, Netherlands
TSS = Traffic Separation Scheme

518.0 kHz GPK Portpatrick Radio, United Kingdom

17615.0 RCV Commonwealth of Independent States Navy Sevastopol', Ukraine

518.0 kHz VOK Canadian Coast Guard Cartwright NFLD, Canada

518.0 kHz Kyaukphyu Radio, Myanmar

518.0 kHz RFA Astrakhan Radio, Russian Federation
VTS = Vessel Traffic Service

11017.7 kHz Digital data station

10081.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft CS-TKQ + EI-EJL + OY-KAM + 5-LAP + 5A-WLA + flight HY9619
CFB = Centralized Fault Book
CFDS = Centralized Fault Display System
CIDS = Cabin Intercommunication Data System
DAR = Data Access Recorder
ECAM = Electronic Centralized Aircraft Monitoring
FCOM = Flight Crew Operation Manual
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
REQPWI = Predicted Wind Request for FL 360 370 380
SGH = Stockholm Ground Handling
STOOPSK = Stockholm Operations Scandinavian Airlines
TPIS = Tire Pressure Indicator System
WN = Warning Number, followed by the Date-Time Group
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles each

The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

The codes of ACARS Message Labels can be found here

490.0 kHz Taganrog Radio, Russian Federation

518.0 kHz Sandakan Radio, Sabah, Malaysia
ROV = Remotely Operated Vehicle
Warnings still in force - received 030300Z MAR 2022

518.0 kHz L2G Argentinian Coast Guard Buenos Aires, Argentina
VS = Vessel Service

8424.0 kHz UDK Murmansk Radio, Russian Federation

518.0 kHz V5W Walvis Bay Radio, Namibia
LNW = Local Navigational Warning
Warnings still in force - received 202000Z FEB 2022

518.0 kHz Byunsan Radio, South Korea
JCS = Joint Chiefs of Staff

518.0 kHz UCV Okhotsk Radio FE, Russian Federation

518.0 kHz Izmir Radio, Turkey
Warnings still in force - received 160520Z FEB 2022

7396.9 kHz HSW64 Bangkok Meteo, Thailand

7396.9 kHz HSW64 Bangkok Meteo, Thailand

518.0 kHz OXJ Torshavn Radio, Faroe Islands, Denmark
DMI = Danish Meteorological Institute

518.0 kHz EJK Irish Coast Guard Valentia, Ireland

518.0 kHz UBE Petropavlovsk - Kamchatskiy Radio FE, Russian Federation
Africa Cape = Mys Afrika is ... the easternmost point of the Kamchatka Peninsula!

7657.0 kHz RDL Commonwealth of Independent States Navy Vilyeyka, Belarus

518.0 kHz Berdyans'k Radio, Ukraine

518.0 kHz Centre Regional Operationnel de Surveillance et de Sauvetage Toulon, France

16067.7 kHz Ministry of Foreign Affairs Cairo, Egypt
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

12711.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

16023.7 kHz Egyptian Embassy Washington DC, United States of America, to Ministry of Foreign Affairs Cairo, Egypt

7778.7 kHz 44406 Egyptian Embassy Delhi, India, to 99904 Ministry of Foreign Affairs Cairo, Egypt

4233.0 kHz Fully automatic frequency step mode monitoring
with continuous classification of digital data signals
on a remote receiver abroad

State-of-the-art digital data signals have been tested since 2013
by innovative broadcast stations such as the Voice of America ...
Here's a 6067.1 kHz MFSK-16 emission on the lower sideband
of AM station Channel 292 transmitting both sidebands
2900 Hz from the carrier frequency 6070.0 kHz
New 202^3 edition of our Perseus Frequency Database
now shows utility stations' callsigns as well!

8454.8 kHz FUG French Navy Saissac, France
New 2023 edition of our Perseus Frequency Database
now shows utility stations' callsigns as well!

6095.0 kHz Broadcast (!) radio station KBC, Netherlands via Germany
testing state-of-the-art digital data signals
such as parallel MFSK emissions on 6093.5 and 6096.5 kHz
i.e. on both sidebands 1500 Hz from the carrier frequency 6095.0 kHz
New 2023 edition of our Perseus Frequency Database
now shows utility stations' callsigns as well!

18529.5 kHz 7RV50 Algerian Embassy Moscow, Russian Federation, to 7RQ20 Ministry of Foreign Affairs El Djaza'ir, Algeria

18063.3 kHz RC2JAL International Committee of the Red Cross Jalalabad, Afghanistan, via MB1TBI International Committee of the Red Cross Tbilisi, Georgia, to RC2KAB International Committee of the Red Cross Kabul, Afghanistan

13973.0 kHz RC2PES International Committee of the Red Cross Peshawar, Pakistan, via MB1TBI International Committee of the Red Cross Tbilisi, Georgia, to RC2MAZ International Committee of the Red Cross Mazar-e Sherif, Afghanistan

More than 25,000 (twenty five thousand!) fascinating screenshots are available on our unique Digital Data Decoder Screenshots USB Stick!