10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft N852FD + N873FD + VN-A829 + 9V-SGE + flight UPS109
GOCC = Global Operations Control Center
• 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 L2C Argentinian Coast Guard Buenos Aires, Argentina

8425.5 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

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

518.0 kHz XSZ Dalian Radio, China

518.0 kHz JNX Kushiro Radio, Japan

518.0 kHz JNR Moji Radio, Japan

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft C-FNOI + N517DZ + N5179A + flight AS0821 + ACA128
BURN + ALTN + 10PCT + RESV = MIN
MIN + DLA = EST
AGM = Miscellaneous Air/Ground Message
FMS = Flight Management System
RDA = Remote Diagnostic Analyzer
RDC = Route Data Calculation
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

5655.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-322J + B-2043 + B-6329 + HL7747 + JA886A + N574UP + 9N-ALW + 9V-SHW + flight ANA77
CFD = Centralized Fault Display
PD = Profile Descent
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

6661.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft N420LA + flight UAL4
Riding on the North Atlantic Jet Stream east of KJFK
at 550+ knots = 1018+ kilometres per hour on FL 310 ...
DT = Destination, followed by the runway number
REQPRG = Request Flight Progress Report
• Code figures for KBOS runways braking action - see e.g. here
• 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 L3B Argentinian Coast Guard Comodoro Rivadavia, Argentina

17928.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft F-HROK + OD-MRL + flight KQ0510
POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP, ETO,
temperature, wind, FOB, time stamp, date, HEX serial
CFB = Centralized Fault Book
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
GPSSU = Global Positioning System Sensor Unit
MMR = Multi-Mode Receiver
TS = Time Stamp
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

518.0 kHz XSI Sanya Radio, China

4209.5 kHz XVG Hai Phong Radio, Viet Nam
Warnings still in force - received 041800Z OCT 2022

4209.5 kHz XVN Nha Trang Radio, Viet Nam
Warnings still in force - received 041220Z OCT 2022

7795.0 kHz JMH2 Tokyo Meteo, Japan

21937.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-307Y + B-5830 + JA819P + JA936A + N579UP + flight SIA24
AGM = Miscellaneous Air/Ground Message
CDP = Computer Diagnostics Program
DFD = Digital Flight Data
EDP = Engine Display Panel
FWS = Flight Warning System
HNDMAT = Haneda Meteorological Advice Team
OC = Operations Control
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-8386 + N612UP + N628UP + N854GT + flight CPA113
AGM = Miscellaneous Air/Ground Message
CFD = Centralized Fault Display
ECS = Environmental Control System
MDPWI = Meteorological Data - Predicted Wind for FL 390
• The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy
• 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

10027.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft N854GT + flight QTR898
Parameters ... Settings ...
CFB = Centralized Fault Book
ECS = Environmental Control System

10060.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-301F + B-305S + B-309A + B-1068 + B-1169 + HL8259 + HL8293 + 5Y-CYE + flight CES229
CFB = Centralized Fault Book
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
PES = Passenger Entertainment System
SR = Seat Row
• 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

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-1169 + B-5928 + RPC8613 + VN-A894 + VT-IFL + flight SIA227
Message A9 is incomplete; read DO NOT MISTAKE TAMBARAM AIRFIELD WITH VOMM
CFB = Centralized Fault Book
DOI = Dry Operating Index
ECU = Electronic Control Unit
EIU = Engine Interface Unit
FADEC = Full Authority Digital Engine Control
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
• UM169 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

10027.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-20A2 + B-6011 + F-HRBB + SU-GEF + 9V-SGG + flight CES231
Increasing solar activity - and the ionosphere going crazy:
METAR uplink for a OMDB - HECA flight ... via Hawaii!
PD = Profile Descent
• Engine Cruise Report ZSPD - ZYTL ...
= 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 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

6652.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-LXM + B-5198 + HL8258 + JA207P + JA887A + N104FE + flight CES520
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
DFD = Digital Flight Data
DT = Destination, followed by the runway number
FLR = Failure
FN = Flight Number
FR = Fault Report, followed by the Date-Time Group
OCC = Operations Control Centre
PES = Passenger Entertainment System
SEB = Seat Electronics Box
SR = Seat Row
• Engine Cruise Report VVNB - 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 ...
• 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

6652.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft N633UP + flight CES568
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
• A NOTAM decoder can be found e.g. here
• 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 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

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

10081.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft F-HJAZ + RA73232 + RA73713 + RA73730 + RA73744 + RA73761 + RA73824 + flight SU1006
AMU = Audio Management Unit
ATSU = Air Traffic Service Unit
CFB = Centralized Fault Book
CFDS = Centralized Fault Display System
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
ECAM = Electronic Centralized Aircraft Monitoring
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
MDDU = Multipurpose Disk Drive Unit
MMR = Multi-Mode Receiver
PHC = Probe Heat Computer
SDAC = System Data Acquisition Computer
WN = Warning Number, followed by the Date-Time Group

8424.0 kHz SVO Olympia Radio, Athens, Greece

5583.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-5940 + N517DZ + N623FE + RPC9934 + RPC9935 + flight CSN504 + DAL41
ATSU = Air Traffic Service Unit
CFB = Centralized Fault Book
CFDS = Centralized Fault Display System
DFB = Digital Flight Book
ECAM = Electronic Centralized Aircraft Monitoring
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
MTC = Maintenance Technical Center
• UM169 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
• Engine Cruise Report PGUM - RPLL ...
= 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

7535.0 kHz VMW Wiluna Meteo WA, Australia
RSMC = Regional Specialized Meteorological Centre

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft N132FE + N504DN + N612UP + N620FE + flight AC0898
ZFW + T1 + T2 + AUX + TAIL - TX = TOGW ...
DFD = Digital Flight Data
FMC = Flight Management Computer
FMS = Flight Management System
TI2 = Terminal Information Request
TOCG = Take Off Centre of Gravity
ZFCG = Zero Fuel Centre of Gravity
• 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 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 N628FE + XA-ADD + XA-VBW + flight AC0890
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
DT = Destination, followed by the runway number
FN = Flight Number
TI2 = Terminal Information Request
TS = Time Stamp
• 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 XVG Hai Phong Radio, Viet Nam

13276.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft A7-ANK + C-GTSZ + N503DN + N625UP + flight AMX022
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
• 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

10081.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft CN-MAX + CN-ROB + CN-ROR + HZ-NS29 + N125FE + RA73213 + RA73172 + RA73227 + RA73230 + RA73232 + 5Y-KYD + 7T-VJX + flight CSC378
AGM = Miscellaneous Air/Ground Message
BSR = Bon Soir
CCDL = Cross Channel Data Link
CDB = Commandant Du Bord
CFB = Centralized Fault Book
CPC = Cabin Pressure Controller
DFB = Digital Flight Book
DFD = Digital Flight Data
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
FWS = Flight Warning System
WN = Warning Number, followed by the Date-Time Group

490.0 kHz Antalya Radio, Turkey

490.0 kHz HZH Jeddah Radio, Saudi Arabia

490.0 kHz Sellia Marina Radio, Italy
VTS = Vessel Traffic Service

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-6446 + JA835A + JA840A + PK-SJR + VN-A887 + VT-IAS + VT-IFP + flight QTR82M
ATSU = Air Traffic Service Unit
CDP = Computer Diagnostics Program
CFB = Centralized Fault Book
CFD = Centralized Fault Display
DA = Departure Airport
DFB = Digital Flight Book
DM = Time Stamp
DS = Destination Airport
DFD = Digital Flight Data
EDP = Engine Display Panel
FR = Fault Report, followed by the Date-Time Group
FUK = Fukushima
FWS = Flight Warning System

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-LRI + B-30ET + B-2290 + B-6009 + N615UP + PK-SJZ + VN-A617 + VT-IFK + flight CES666
AGM = Miscellaneous Air/Ground Message
• Engine Cruise Report WIII - WIDD ...
= 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 ...

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

17919.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-2300 + B-6753 + B-8405 + B-18917 + PK-GMV + 9V-SHA + 9V-SHQ + flight FM9116
OCCS = Operations Control Centre Singapore
• 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

6652.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-20C6 + B-30C3 + B221U + N616UP + N620UP + N26967 + 9V-SHE + flight DAL977
DFB = Digital Flight Book
DT = Destination, followed by the runway number
FN = Flight Number
REQPRG = Request Flight Progress Report
TS = Time Stamp
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

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft A6-EUG + A6-EVM + B-20C6 + HL8259 + RA73678 + flight AEA041
BMC = Bleed Monitoring Computer
CFB = Centralized Fault Book
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
FR = Fault Report, followed by the Date-Time Group
FSM = Flight System Message
RWYCC = Runway Condition Code
WN = Warning Number, followed by the Date-Time Group
• Code figures for WSSS runways braking action - see e.g. here
• UM169 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

5195.0 kHz DRA5 Kiel, Germany

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

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

518.0 kHz JGC Yokohama Radio, Japan

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

490.0 kHz TFX Siglufjördur Radio, Iceland
Saudanes is the name of the lighthouse in that fjord ...

11312.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft HL7793 + JA817P + N404KZ + 9H-VDC + 9V-SGD + 9V-SHE + 9V-SHY + 9V-SMI + flight KAL017
AGM = Miscellaneous Air/Ground Message
MDPWI = Meteorological Data - Predicted Wind for FL 340 including WP FAKES ;-)
OCC = Operations Control Centre
REQPWI = Predicted Wind Request for FL 340 380 420 460 (!)
SOB = Souls on Board
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 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 UAT Moscow Radio, Russian Federation

12579.0 kHz UAT Moscow Radio, Russian Federation

6661.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft CC-CXC + C-GOJC + N877FD + N897FD + N24974 + XA-AMX + XA-VSF + flight VIR138
ACT = Additional Center Tank
AFMS = Aircraft Fuel Management System
ATSU = Air Traffic Service Unit
CFB = Centralized Fault Book
ECAM = Electronic Centralized Aircraft Monitoring
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
FWC = Flight Warning Computer
SCV = Surge Control Valve
• 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 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-30DJ + B-320U + B-6081 + JY-AYV + RA73095 + SU-GCO + VN-A222 + flight FDX577
Enroute weather ZBLA - ZSNJ ...
DT = Destination, followed by the runway number
FN = Flight Number
TI2 = Terminal Information Request
TS = Time Stamp
• 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

4209.5 kHz XVG Hai Phong Radio, Viet Nam

4209.5 kHz XSQ Guangzhou Radio, China

4209.5 kHz XVG Hai Phong Radio, Viet Nam
Warnings still in force - received 201800Z AUG 2022

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft 5Y-KZG + 9V-SJB + 9V-SMW + flight ANA66
• 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
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!!!

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft HL8258 + JA18KZ + PK-GNE + VN-A818 + flight MSR268
Increasing solar activity - and the ionosphere going crazy:
uplinks for a LGKO - EPWA flight of SX-VSL Sky Express Airline Greece ... via Auckland!
CFB = Centralized Fault Book
WN = Warning Number, followed by the Date-Time Group
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
• UM169 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
• Engine Cruise Report RKSI - YSSY ...
= 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 NMO United States Coast Guard Honolulu, Hawaii
BNM = Broadcast Notice to Mariners

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-30AG + HL7792 + JA803A + JA936A + RA73673 + RPC8609 + flight SIA297
Increasing solar activity - and the ionosphere going crazy:
POSREPs downlink for a UHWW - UNKL flight ... via Auckland!
DOI = Dry Operating Index
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

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-20C6 + HL8293 + JA206P + JA883A + JA886A + JA901A + N864FD + RPC9933 + flight DAL41 + UAE1CR + UAE5CL
AGM = Miscellaneous Air/Ground Message
LGTM = Light Minus Turbulence = relatively weaker intensity
• 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 VBR Canadian Coast Guard Ferndale ONT, Canada

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

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

7946.8 kHz Digital data station

10093.0 kHz H09 HFDL Barrow Air, Alaska, + aircraft A6-EVJ + flight TS0124
• 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

17919.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft C-FSBV + F-HRBF + JA13KZ + N502DN + N631UP + N864FD + XA-VSF + flight AAY16
P = Primary frequency
CFD = Centralized Fault Display
FMC = Flight Management Computer
S = Secondary frequency
• 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 VFF Canadian Coast Guard Iqaluit NUN, Canada

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

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

518.0 kHz 9MG Georgetown Radio, Pinang Island, Malaysia
NTM = Notice to Mariners
Warnings still in force - received 171900Z AUG 2022

518.0 kHz Balasore Radio, India
IMD = India Meteorological Department

518.0 kHz Parangipettai Radio, India
IMD = India Meteorological Department

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft CC-CXC + N631UP + XA-VRX + XA-VRY + flight UPS36
Header of message H1 is missing ...
DFB = Digital Flight Book
FATS = Fan Air Temperature Sensor
FAV = Fan Air Valve
HPV = High Pressure Valve
PACK = Pressurization Air Conditioning Kit
PRV = Pressure Regulation Valve
PS3 = Compressor Discharge Static Air Pressure
TCV = Thrust Control Valve
VSV = Vacuum Switching Valve

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

4209.5 kHz XSV Tianjin Radio, China

11312.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-5681 + HL7795 + N627UP + RA73679 + 9V-SGF + flight AAR211
ADIRU = Air Data Inertial Reference Unit
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
FSM = Flight System Message
IR = Inertial Reference
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

16806.5 kHz NMC United States Coast Guard San Francisco CA, United States of America
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

486.0 kHz XSG Shanghai Radio, China
Chinese teleprinter code after Latin alphabet header

518.0 kHz L2G Argentinian Coast Guard Buenos Aires, Argentina

11184.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft EI-GAL + JY-AYQ + N20904 + RA73305 + flight SU1692
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, + aircraft A6-EUT + A6-EUV + RA73309 + flight LH135A
Emirates Airbus A380-842 passing the North Pole at FL 360 ...
DFB = Digital Flight Book
FN = Flight Number
DT = Destination, followed by the runway 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 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

11184.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft A6-EUV + A7-ANK + RA73226 + flight SU1518
Cruise data UUWW - UMKK ...
• UM169 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
DFB = Digital Flight Book
• 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

11184.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft A7-ANK + C-FGDX + CN-RGJ + N628UP + flight CES704 + QTR55U
• UM169 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
AGM = Miscellaneous Air/Ground Message
CCO = Operations Control Centre
PDU = Pilot Display Unit
• 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

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

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-302H + B-307D + B-308N + B-321L + B-5962 + B-6012 + JA14KZ + flight CCA130
AGM = Miscellaneous Air/Ground Message
• 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

3585.0 kHz HLL8 Soul Meteo, South Korea

8912.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft EI-MYY + N132FE + N611UP + N616UP + N819CA + flight LAN504
CFB = Centralized Fault Book
DFD = Digital Flight Data
WN = Warning Number, followed by the Date-Time Group
• 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 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

11312.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-8595 + JA894A + N517DZ + flight ANA815
MDPWI = Meteorological Data - Predicted Wind for FL 390
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

518.0 kHz SVH Iraklion Radio, Greece

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft CC-BBJ + flight UAL199
10 hours NZAA - SCEL across the Southern Ocean without an alternate airport ...
Note that all those famous flight tracking webpages such as Flightradar 24
have ZERO real-time data for the 9+ hours cruise sector of this flight;
they simply visualize some great-circle extrapolation ...
while it's all here on HF - updated every 15 minutes -
if you know when and where to look!
Now you can easily calculate the fuel consumption:
121311 - 121211 = 60 Minutes
197357 - 192047 = 5310 kg corresponding to the rounded
47900 - 42400 = 5½ tons per hour up there at FL 380 ...
CG = Center of Gravity
CI = Consistency Index
FEL = Fuel Estimation Left
FER = Fuel Estimation Right
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
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 3VL Kelibia Radio, Tunisia

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft B-30AE + N122FE + N938AK + XA-VRX + flight UPS765
Enroute weather PHNL - KSEA ...
DFB = Digital Flight Book
DFD = Digital Flight Data
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
RESREQ/AK = FMS downlink acknowledgement of a REQFPN uplink
TI2 = Terminal Information Request

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft N45956 + flight AS0782
Riding on the North Pacific Jet Stream west of KSFO
at 542+ knots = 1004+ kilometres per hour on FL 390 ...
DT = Destination, followed by the runway number
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
FRP = Facilities Response
• 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 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

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft A6-BLL + F-HTYH + N104FE + RA73194 + RA73307 + SU-GDB + 5Y-KZE + flight SU0057
The INRANGE message announces the aircraft being within VHF range of the DS
ACP = Audio Control Panel
AMU = Audio Management Unit
CFB = Centralized Fault Book
DFD = Digital Flight Data
FLR = Failure
FR = Fault Report, 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

13303.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft CN-RGY + RA73713 + RA73743 + ZS-SXF + 5Y-KYD + flight V715WC
AGM = Miscellaneous Air/Ground Message
CCO = Operations Control Centre
REQPWI = Predicted Wind Request for FL 410 400 380 360
RESPWI/AK = FMS downlink acknowledgement of PWI = Predicted Wind uplink data

13303.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft CN-RGM + CS-TKQ + EI-EIL + flight 8U0973
AGM = Miscellaneous Air/Ground Message
BJR = Bonjour
CDB = Commandant Du Bord
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
• Code figures for LPPR 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

13303.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft EC-MAJ + EI-EIL + N122FE + flight DE07LA + VS412W
Message H1 is incomplete ...
DFD = Digital Flight Data
• Engine Cruise Report LFPR - EGCC ...
= 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 ...

8416.5 kHz NMO United States Coast Guard Honolulu, Hawaii

8939.0 kHz H10 HFDL Muan Air, South Korea, + aircraft HL7625 + HL7792 + N102FE + N867FD + VN-A585 + flight CES547
CFB = Centralized Fault Book
CFD = Centralized Fault Display
DFD = Digital Flight Data
WN = Warning Number, followed by the Date-Time Group
• Code figures for RKSI runways braking action - see e.g. here
• 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

11318.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft C-FGFZ + N45956 + flight GLG162
REQPRG = Request Flight Progress Report
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
• 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 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

10027.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-324J + N101FE + RA73673 + UK32015 + 9V-SKT + flight APJ315
Increasing solar activity - and the ionosphere going crazy:
POSREP and engine data downlink for a UHHH - UNKL flight ... via Hawaii!
AGM = Miscellaneous Air/Ground Message
GOCC = Global Operations Control Center
• Engine Cruise Report UHHH - UNKL ...
= 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

4209.5 kHz XSQ Guangzhou Radio, China
TD = Tropical Depression

4209.5 kHz XVN Nha Trang Radio, Viet Nam

4209.5 kHz XVN Nha Trang Radio, Viet Nam
Warnings still in force - received 072020Z AUG 2022

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

10081.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft CN-RGT + EC-NOM + JA16KZ + OE-LZF + RA73226 + RA73230 + SE-DMO + TC-FHC + flight QTR72G
Perfect OOOI ...
AGM = Miscellaneous Air/Ground Message
CCO = Operations Control Centre
DT = Destination, followed by the runway number
FN = Flight Number
GPU = Ground Power Unit
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
• 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

8582.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

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

8582.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-30CV + HL7626 + VN-A599 + 9V-SGB + flight KZR729
ADIRU = Air Data Inertial Reference Unit
CFB = Centralized Fault Book
CFDS = Centralized Fault Display System
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
ECAM = Electronic Centralized Aircraft Monitoring
FF = Fuel Flow (for engines 1 + 2)
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
SDAC = System Data Acquisition Computer
TPIU = Tire Pressure Indicator Unit
WXR = Weather Radar
• 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

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-1028 + B-6323 + B-8567 + VN-A501 + VN-A506 + 9V-SME + flight DP0417
Message A9 is incomplete ...
RWYCC = Runway Condition Code
TI2 = Terminal Information Request
• Code figures for WSSS runways braking action - see e.g. here

8416.5 kHz NMF United States Coast Guard Boston MA, United States of America

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

21997.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft N540LA + flight AVA212

490.0 kHz GCC Cullercoats Radio, United Kingdom

490.0 kHz EAV Valencia Radio, Spain

490.0 kHz GNI Niton Radio, United Kingdom

490.0 kHz 9AS Split Radio, Croatia

8939.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-2411 + EP-MMR + N127FE + N614UP + N888FD + flight CCA622 + HVN300
GOCC = Global Operations Control Center
REQPWI = Predicted Wind Request for FL 380 360 340 320
• 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 Muttam Point Radio, India

518.0 kHz Vengurla Point Radio, India
IMD = India Meteorological Department
PWPIWPWW... = dated 02082022...
PPAA = PILOT / PILOT MOBIL / PILOT SHIP
= WMO code form for an upper-wind report

8912.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft CS-TKQ + N620UP + PR-TYO
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 XSX Chi-Lung Radio, Taiwan (Democratic Republic of China)

11318.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + flight TAM368 + TAM382

11312.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-1168 + JA818A + N581UP + VN-A594 + 9V-SHS + flight ANA428
OCCS = Operations Control Centre Singapore
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

518.0 kHz JNB Naha Radio, Okinawa Island, Japan

17919.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-308Z + B-1076 + B-6009 + B-8498 + JA821P + VT-IAS + flight D00001
Current aircraft radar echo in-flight information downlink ...
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
LGTM = Light Minus Turbulence = relatively weaker intensity
WN = Warning Number, followed by the Date-Time Group

8939.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-304N + B-308N + B-2298 + B-6335 + B-6406 + B-7838 + B-8497 + RA73128 + flight UAL837
MDPWI = Meteorological Data - Predicted Wind for FL 310
TI2 = Terminal Information Request

8939.0 kHz H10 HFDL Muan Air, South Korea, + aircraft A6-EVI + B-305U + B-6893 + B-8550 + N614UP + 9V-SMZ + flight ANA834
TI2 = Terminal Information Request
• 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

9165.0 kHz HLL Soul Meteo, South Korea

16826.3 kHz XSQ Guangzhou Radio, China
CMA = China Meteorological Administration
New radiofax service, schedule see here

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
• UM169 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

4209.5 kHz XSG Shanghai Radio, China

518.0 kHz VAE Canadian Coast Guard Tofino BC, Canada

518.0 kHz NMQ United States Coast Guard Long Beach CA, United States of America

13276.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft JY-BAG + N575UP + YU-ARB + 86042S + flight QTR32J
Bobby71 is a Boeing KC-135R Stratotanker
TGT = Turbine Gas Temperature
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
• Engine Cruise Report LYBE - 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 ...
• 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 TAH Istanbul Radio, Turkey

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

5100.0 kHz VMC Charleville Meteo QLD, Australia

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

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-305F + B-305X + B-6406 + B-6893 + HL7625 + JA216A + N510DN + N894FD + flight CSC824
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

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-20CJ + B-30CK + B-325Z + JA893A + JY-AYV + N127FE + N847FD + VT-NAA + flight SIA511
AGM = Miscellaneous Air/Ground Message
RESPWI/AC = FMS downlink acceptance and insertion of PWI = Predicted Wind uplink data
• 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

10081.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft C-FITU + C-FRSE + CN-MAX + CN-MAY + CN-RGJ + HB-JOK + N573UP + N782AM + OH-LWR + OY-KAP + flight EI034J
AGM = Miscellaneous Air/Ground Message
CCO = Operations Control Centre
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 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

10081.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft CN-ROR + EI-GAL + EI-KGD + P4-KGA + RA73172 + RA73305 + RA73229 + RA73309 + RA73711 + RA73732 + flight LW94MD
AGM = Miscellaneous Air/Ground Message
CCO = Operations Control Centre

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

17928.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft CN-ROY + EC-MAJ + ES-SAA + HZ-NS37 + N624UP + 5A-WLB + flight ME0572
AFS = Auto Flight System
AGM = Miscellaneous Air/Ground Message
CCO = Operations Control Centre
CFB = Centralized Fault Book
CFD = Centralized Fault Display
CFDS = Centralized Fault Display System
CIDS = Cabin Intercommunication Data System
DA = Departure Airport
DFB = Digital Flight Book
DM = Time Stamp
DS = Destination Airport
ECS = Environmental Control System
ELAC = Elevator Aileron Computer
FADEC = Full Authority Digital Engine Control
FDU = Fire Detection Unit
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
IFE = In-Flight Entertainment
PHC = Probe Heat Computer
RWYCC = Runway Condition Code
SFCC = Slat Flap Control Computer
WN = Warning Number, followed by the Date-Time Group
• Code figures for EBCI runways braking action - see e.g. here
• Engine Cruise Report GCTS - EGCC ...
= 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 ...

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

9165.0 kHz HLL Soul Meteo, South Korea

9165.0 kHz HLL Soul Meteo, South Korea

9165.0 kHz HLL Soul Meteo, South Korea

11354.0 kHz H09 HFDL Barrow Air, Alaska, + flight ACA036 + UAL78

13342.0 kHz H10 HFDL Muan Air, South Korea, + flight FDX523 + SIA34

4209.5 kHz XSG Shanghai Radio, China

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-300R + B-323A + B-6323 + B-6383 + B-6759 + PK-GNQ + flight CES563
DFB = Digital Flight Book
TI2 = Terminal Information Request

6463.8 kHz FUM French Navy Papeete, Tahiti, Polynesia (French)
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

11312.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + flight CSN210 + LAN801

13276.0 kHz H04 HFDL Riverhead Air NY, United States of America, + flight DAH270 + SAS909

13276.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft EC-NHM + G-VWOO + HL8293 + N292NV + N883FD + 7T-VJV + flight DAH270
DT = Destination, followed by the runway number
FN = Flight Number
GOCC = Global Operations Control Center
RDA = Radar Data Acquisition
TS = Time Stamp
• 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

8948.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft A6-XWA + A7-ANR + C-GOIH + CN-ROS + C-GTSZ + flight AIC149
BJR = Bonjour
CDB = Commandant Du Bord
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

11312.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-307K + C-FNOH + HL8293 + JA897A + N620UP + N859FD + RPC9937 + flight CES633
OCC = Operations Control Center
SCV = Surge Control Valve
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
• 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

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
DFS = Digital Forecast System

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

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

518.0 kHz Parangipettai Radio, India
IMD = India Meteorological Department

17919.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-1211 + B-2290 + B-8977 + B-18910 + HL7211 + HL7736 + JA895A + flight CES284
FSM = Flight System Message
• 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

6652.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-221U + N579UP + RA73673 + 9V-SHF + 9V-SMD + 9V-SMM + flight CES756
CFB = Centralized Fault Book
DA = Departure Airport
DFD = Digital Flight Data
DM = Time Stamp
DS = Destination Airport
• 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

5807.0 kHz ZKLF Auckland Meteo, New Zealand

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + flight LP2465 + NCA263

8416.5 kHz NMO United States Coast Guard Honolulu, Hawaii

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

8424.0 kHz SVO Olympia Radio, Athens, Greece

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + flight ANA861 + KAL361

15025.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft A6-EVL + EI-KGE + HZ-NS38 + RA73107 + flight FIN3ML
REQPWI = Predicted Wind Request for FL 360
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
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 NMW United States Coast Guard Astoria OR, United States of America
BNM = Broadcast Notice to Mariners
LA = Los Angeles
LB = Long Beach
SD = San Diego
SF = San Francisco

11184.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft RA73229 + RA73665 + RA73745 + RA73779 + flight SIA52
CFB = Centralized Fault Book
DFB = Digital Flight Book
ECU = Electronic Control Unit
EIU = Engine Interface Unit
FADEC = Full Authority Digital Engine Control
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
LPTC = Low Pressure Turbine Control
RA73665 is yet another Boeing 737-8ZS NG aircraft of Siberian Airlines
leased from Cramington Aviation Limited in Ireland and orginally registered
as VQ-BKV 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 VQ-BKV followed immediately by the Date-Time Group ;-)))
• Engine Cruise Report UUEE - ULLI ...
= 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 ...

518.0 kHz Fuzhou Radio, China

12786.0 kHz NMC United States Coast Guard San Francisco CA, United States of America

12786.0 kHz NMC United States Coast Guard San Francisco CA, United States of America

12786.0 kHz NMC United States Coast Guard San Francisco CA, United States of America
CPHC = Central Pacific Hurricane Center
G = Gusts
TS = Tropical Storm

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft N594FE + N624FE + flight FX1429
FICON = Field Conditions
GOCC = Global Operations Control Center
• A NOTAM decoder can be found e.g. here
• Code figures for PAFA runways braking action - see e.g. here

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

518.0 kHz 9WW21 Miri Radio, Sarawak, Malaysia
Warnings still in force - received 141510Z JUL 2022!
Totally outdated meteorological warnings of several days ago ...
Alamak! Tak boleh tahan lah!

4209.5 kHz XVN Nha Trang Radio, Viet Nam

16907.5 kHz JFA Funabashi Fisheries Radio, Japan

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

4209.5 kHz SVH Iraklion Radio, Greece
Warnings still in force - received 090300Z JUL 2022

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

518.0 kHz Kao-Hsiung Radio, Taiwan (Democratic Republic of China)

8948.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft B-1539 + C-GHPY + CN-RGG + CN-RGN + G-VSXY + HZ-NS32 + HZ-NS44 + N643GT + flight THY75D
Cruise data CYYZ - EGLL ...
CCO = Operations Control Centre
DT = Destination, followed by the runway number
FMS = Flight Management System
FN = Flight Number
REQPWI = Predicted Wind Request for FL 410 390 360
RESPWI/AC = FMS downlink acceptance and insertion of PWI = Predicted Wind uplink data
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
FRP = Facilities Response
• 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

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

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

8416.5.0 kHz NMF United States Coast Guard Boston MA, United States of America
TS = Tropical Storm

518.0 kHz United States Coast Guard Savannah GA, United States of America

490.0 kHz XVT Da Nang Radio, Viet Nam

490.0 (!) kHz Myeik Radio, Myanmar
MNHC = Myanmar Naval Hydrographic Centre

518.0 kHz UDN Novorossiysk Radio, Russian Federation

6450.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

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

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

518.0 kHz Vakalpudi Radio, India
CWC = Cyclone Warning Centre
IMD = India Meteorological Department

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 ...

518.0 kHz XVS Ho Chi Minh City Radio, Viet Nam

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

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 ZBM Hamilton Harbour Radio, Bermuda

518.0 kHz NMR United States Coast Guard San Juan, Puerto Rico
BNM = Broadcast Notice to Mariners

11030.0 kHz VMC Charleville Meteo QLD, Australia

11030.0 kHz VMC Charleville Meteo QLD, Australia

518.0 kHz ICH Italian Coast Guard La Maddalena Island, Italy

518.0 kHz SUZ Serapeum Radio, Egypt
BA = British Admiralty

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

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan
The second frame shows the news broadcast schedule in JST = Japan Standard Time

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

6220.0 kHz IDN Italian Navy Napoli, Italy

9982.5 kHz KVM70 Honolulu Meteo, Hawaii
ITCZ = Inter-Tropical Convergence Zone

9982.5 kHz KVM70 Honolulu Meteo, Hawaii

7795.0 kHz JMH2 Tokyo Meteo, Japan

518.0 kHz L2T Argentinian Coast Guard Mar del Plata, Argentina

12750.0 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction

12750.0 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction

12750.0 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction

21997.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft HP1718 + N503DN + N506DN + PR-TYV + PR-YYI + flight ACA092
DFB = Digital Flight Book
ZFW + TOF = TOW - TIF = LAW
• Engine Cruise Report SBGR - SBPJ ...
= 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 ...

8948.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft CC-BGL + C-GOIO + EC-MAJ + F-HTYI + N512DN + 9V-SGC + flight UAL106
CDP = Computer Diagnostics Program
CFB = Centralized Fault Book
CIDS = Cabin Intercommunication Data System
DFD = Digital Flight Data
DT = Destination, followed by the runway number
ECS = Environmental Control System
EDP = Engine Display Panel
FN = Flight Number
FR = Fault Report, followed by the Date-Time Group
FWS = Flight Warning System
SDF = Smoke Detection Function
TS = Time Stamp
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
• 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

8412.5 kHz XSQ Guangzhou Radio, China
CMA = China Meteorological Administration
New radiofax service, schedule see here

17919.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-221W + B-322R + B-2094 + B-8572 + JA15KZ + 9V-SHV + 9V-SHW + flight NCA226
The first part of the FOC message is missing ...
CFD = Centralized Fault Display
EPCS = Engine Propulsion Control System
FF = Fuel Flow (for engines 1 + 2)
FOC = Flight Operations Control
OCCS = Operations Control Centre Singapore

518.0 kHz XSG Shanghai Radio, China

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

518.0 kHz UFO Kholmsk Radio FE, Russian Federation

8912.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft C-FNNU + YU-ARB + flight AFR146 + AFR159
DFR = Daily Flight Report
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

4209.5 kHz XVG Hai Phong Radio, Viet Nam

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

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

8412.5 kHz XSQ Guangzhou Radio, China
CMA = China Meteorological Administration
MSA = Maritime Safety Administration
New radiofax service, schedule see here

16907.5 kHz JFA Funabashi Fisheries Radio, Japan
NOAA satellite settings for JRC / FURUNO fish finder equipment ...
The date reads 4 4 25 = 2022 April 25
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year
Tentative schedule see here

518.0 kHz JNL Otaru Radio, Japan

518.0 kHz UFL Vladivostok Radio SE, Russian Federation

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

10093.0 kHz H09 HFDL Barrow Air, Alaska, + aircraft RA73708 + flight SU1506 + SU1769
AEVC = Avionics Equipment Ventilation Computer
CFB = Centralized Fault Book
CFDS = Centralized Fault Display System
CIDS = Cabin Intercommunication Data System
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
MDDU = Multipurpose Disk Drive Unit
OBRM = On Board Replaceable Module
• Engine Cruise Report UUEE - USPP ...
= 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 ...

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

518.0 kHz SVL Limnos Radio, Greece

8658.0 kHz JFX Kagoshima Fisheries Radio, Japan
Latest tuna market prices ...
The date reads 4 4 22 = 2022 April 22
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year
Tentative schedule see here

518.0 kHz LGT Tjoeme Radio, Norway

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

518.0 kHz TAH Istanbul Radio, Turkey

518.0 kHz A9M Hamala Radio, Bahrain
BA = British Admiralty
MENAS = Middle East Navigation Aids Service
MEGULITE = Middle East Gulf Lighting Service
VTIS = Vessel Traffic Information Service
Warnings still in force - received 210410Z APR 2022

518.0 kHz IQM Mondolfo Radio, Italy

518.0 kHz 9HD Valetta Radio, Malta
NTM = Notice to Mariners

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

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

518.0 kHz CBV Valparaiso Radio, Chile
ODAS = Ocean Data Acquisition Systems

518.0 kHz UUI Odessa Radio, Ukraine
Warnings still in force - received 170230Z APR 2022

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

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

5100.0 kHz VMC Charleville Meteo QLD, Australia
RSMC = Regional Specialized Meteorological Centre

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina
The missing aircraft PP-ZRT is a Van's RV-10 with three POB ...

16959.8 kHz FUJ French Navy Noumea, New Caledonia
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

8486.3 kHz CTA Portuguese Navy Lisbon, Portugal

490.0 kHz EAL Las Palmas Radio, Canary Islands

490.0 kHz SVK Kerkyra Radio, Greece

490.0 kHz IGS Piombino Radio, Italy

490.0 kHz Hamburg Meteo, Germany
VTG = Verkehrstrennungsgebiet

490.0 kHz OST Oostende Radio, Belgium

490.0 kHz EJM Irish Coast Guard Malin Head, Ireland
MRSC = Maritime Rescue Sub Centre

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!!!

21949.0 kHz H08 HFDL Johannesburg Air, South Africa (Republic of), + aircraft 5A-ONA + 5A-ONJ + flight PR0684 + WB0020 + 4Y0093
AFS = Auto Flight System
ATSU = Air Traffic Service Unit
CFB = Centralized Fault Book
CFDS = Centralized Fault Display System
CIDS = Cabin Intercommunication Data System
DA = Departure Airport
DM = Time Stamp
DMU = Data Management Unit
DS = Destination Airport
ECAM = Electronic Centralized Aircraft Monitoring
ECU = Electronic Control Unit
EIU = Engine Interface Unit
FADEC = Full Authority Digital Engine Control
FDIU =Flight Data Interface Unit
FLR = Failure
FWC = Flight Warning Computer
FR = Fault Report, followed by the Date-Time Group
PRAM = Pre-Recorded Announcements and Music
QAR = Quick Access Recording
SDCU = Smoke Detect Control Unit
SDF = Smoke Detection Function
WN = Warning Number, followed by the Date-Time Group

21949.0 kHz H08 HFDL Johannesburg Air, South Africa (Republic of), + aircraft D-AXGB + RA73728 + RA73835 + VP-BAZ + 9XR-WQ + flight QR0833
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
AFS = Auto Flight System
ATSU = Air Traffic Service Unit
CFDS = Centralized Fault Display System
ECAM = Electronic Centralized Aircraft Monitoring
EIS = Electronic Instrument System
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
MCDU = Multi-Function Control Display Unit
TCAS = Traffic Alert and Collision Avoidance System
WN = Warning Number, followed by the Date-Time Group

18696.0 kHz Digital data station

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

16854.0 kHz XSQ Guangzhou Radio, China
NOTICE gives a FAX schedule change as of 23 MAR ...
Strange frequencies ...
N/W = Nautical Warning
Characters in brackets denote the Latin alphabet
The four-figure groups without brackets
are Chinese ideographs

8957.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft CC-BDB + N542LA + N860FD + flight AVA184
Cruise data KMIA - SEQM and SCEL - KMIA ...
DFB = Digital Flight Book
EEC = Electronic Engine Controller
FATS = Fan Air Temperature Sensor
FAV = Fan Air Valve
TCV = Thrust Control Valve
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 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

8658.0 kHz JFX Kagoshima Fisheries Radio, Japan
Navigational warnings for NAVAREAs 10 and 11
The date reads 4 4 9 = 2022 April 9
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year
Tentative schedule see here

12668.3 kHz FUG French Navy Saissac, France

5100.0 kHz VMC Charleville Meteo QLD, Australia

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

518.0 kHz GPK Portpatrick Radio, United Kingdom

518.0 kHz ESA Tallinn Radio, Estonia
PET = Saint Petersburg

7795.0 kHz JMH2 Tokyo Meteo, Japan

7795.0 kHz JMH2 Tokyo Meteo, Japan

5807.0 kHz ZKLF Auckland Meteo, New Zealand

6661.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft G-VDIA + N538LA + N873FD + N588NW + flight DAL295
REQPRG = Request Flight Progress Report
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
• 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 hereodes of ACARS Message Labels can be found here

17615.0 RCV Commonwealth of Independent States Navy Sevastopol', Ukraine

16953.3 kHz 6WW French Navy Dakar, Senegal

518.0 kHz PKX Jakarta Radio, Indonesia

518.0 kHz VOK Canadian Coast Guard Cartwright NFLD, Canada

518.0 kHz 9VG Singapore Radio, Singapore
SPOCC = Singapore Port Operations Control Centre

XSQ Guangzhou Radio, China
Three new frequencies monitored 250338Z MAR 2022
Click to enlarge!
New radiofax service, schedule see here

12629.3 kHz XSQ Guangzhou Radio, China
CMA = China Meteorological Administration
New radiofax service, schedule see here

518.0 kHz Kyaukphyu Radio, Myanmar

11086.5 kHz GYA Royal Navy London, United Kingdom

17016.8 kHz KPH San Francisco Radio CA, United States of America
MMP = Masters, Mates and Pilots
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

518.0 kHz EAR La Coruna Radio, Spain

16907.5 kHz JFA Funabashi Fisheries Radio, Japan
The date reads 4 3 18 = 2022 March 18
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year
Tentative schedule see here

518.0 kHz LFO Oerlandet Radio, Norway

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

518.0 kHz LGQ Rogaland Radio, Norway

11017.7 kHz Digital data station

17146.4 kHz NMG United States Coast Guard New Orleans LA, United States of America

16963.3 kHz FUF French Navy Fort de France, Martinique

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

518.0 kHz SUH Alexandria Radio, Egypt
BA = British Admiralty

490.0 kHz Taganrog Radio, Russian Federation

7795.0 kHz JMH2 Tokyo Meteo, Japan

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

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 Bjuroklubb Radio, Sweden

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

518.0 kHz VBA Canadian Coast Guard Pass Lake ONT, Canada

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

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

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

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

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

5156.8 kHz TBB Turkish Navy Ankara, Turkey

2790.8 kHz FUE French Navy Brest, France
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

7657.0 kHz RDL Commonwealth of Independent States Navy Vilyeyka, Belarus

518.0 kHz Berdyans'k Radio, Ukraine

518.0 kHz LZW Varna Radio, Bulgaria

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

4227.5 kHz IDR Italian Navy Rome, Italy
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

518.0 kHz VAU Canadian Coast Guard Chebogue NS, Canada

518.0 kHz Gislovshammar Radio, Sweden

518.0 kHz LGP Bodoe Radio, Norway

3855.0 kHz DDH3 Hamburg Meteo, Germany

13962.5 kHz Digital data station

2610.2 kHz FUO French Navy Toulon, France
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan
News in Indonesian ...

13315.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft CC-BBD + CC-BBJ + CC-CWY + PR-TYR + PR-TYS + 9XR-WQ + flight CM0759
CG = Center of Gravity
CI = Consistency Index
FEL = Fuel Estimation Left
FER = Fuel Estimation Right
REQPWI = Predicted Wind Request for FL 390 370 350 330

13315.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft CC-CWY + flight AZU230
DFB = Digital Flight Book
EEC = Electronic Engine Controller
EGT = Exhaust Gas Temperature
FAV = Fan Air Valve
FF = Fuel Flow (for engines 1 + 2)
IDG = Integrated Drive Generator
ISFC = Indicated Specific Fuel Consumption
LPT = Low Pressure Turbine
OIP = Oil Pressure
OIQ = Oil Quantity
OIT = Oil Temperature
PACK = Pressurization Air Conditioning Kit
PCMCIA = Personal Computer Memory Card International Association
(the same as Boeing's DFDAU = Digital Flight Data Acquisition Unit)
TLA = Thrust Lever Angle

4610.0 kHz GYA Royal Navy London, United Kingdom

17315.9 kHz NMG United States Coast Guard New Orleans LA, United States of America
NHC = National Hurricane Center

12382.0 kHz XSG Shanghai Radio, China
CMA = China Meteorological Administration

518.0 kHz UGE Arkhangelsk Radio, Russian Federation
Warnings still in force - received 270550Z DEC 2021

7880.0 kHz DDK3 Hamburg Meteo, Germany

7880.0 kHz DDK3 Hamburg Meteo, Germany

518.0 kHz VCO Canadian Coast Guard Port Caledonia NS, Canada

518.0 kHz OXF Simiutaq Radio, Greenland
TUSASS is the new name for Tele Post Greenland

7795.0 kHz JMH2 Tokyo Meteo, Japan
TS 2122 = Tropical Storm Rai

8040.0 kHz GYA Royal Navy London, United Kingdom

5100.0 kHz VMC Charleville Meteo QLD, Australia

5807.0 kHz ZKLF Auckland Meteo, New Zealand

6450.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

17151.2 kHz NMC United States Coast Guard San Francisco CA, United States of America

518.0 kHz VON Canadian Coast Guard Robin Hood Bay NFLD, Canada

12750.0 kHz NMF United States Coast Guard Boston MA, United States of America

5195.0 kHz DRA5 Kiel, Germany

12750.0 kHz NMF United States Coast Guard Boston MA, United States of America
NHC = National Hurricane Center

518.0 kHz Grindavik Radio, Iceland

9001.0 kHz 4XZ Israel Navy Haifa, Israel

518.0 kHz Talcahuano Radio, Chile

7795.0 kHz JMH2 Tokyo Meteo, Japan

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

4583.0 kHz DDK2 Hamburg Meteo, Germany

4583.0 kHz DDK2 Hamburg Meteo, Germany

490.0 kHz Puerto Montt Radio, Chile

8416.5 kHz UFZ Vladivostok Radio SE, Russian Federation
Warnings still in force - received 231100Z AUG 2021

518.0 kHz Grimeton Radio, Sweden

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-6091 + B-6410 + EP-IJA + N575UP + VP-BKP
ADIRU = Air Data Inertial Reference Unit
ADR = Air Data Reference
CFB = Centralized Fault Book
DFD = Digital Flight Data
EEC = Electronic Engine Controller
EFCS = Electronic Flight Control System
FR = Fault Report, followed by the Date-Time Group
WN = Warning Number, followed by the Date-Time Group

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

21866.0 kHz FC6FEM Federal Emergency Management Agency Denton TX, United States of America
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

12711.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-208R + B-308E + B-6919 + CC-CWV + N117FE + N616UP + 9V-SCE
DFD = Digital Flight Data
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 codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

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

12235.0 kHz 7CB Indonesian Navy Belawan, Indonesia

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 2022 edition of our Perseus Frequency Database
now shows utility stations' callsigns as well!

8454.8 kHz FUG French Navy Saissac, France
New 2022 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 2022 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