Hot Frequencies and
Digital Data Transmission Screenshots

The following - very recent! - screenshots have been produced and uploaded to this international pooling webpage by our worldwide net of cooperators, using advanced equipment such as the superb PROCITEC and WAVECOM Digital Data Decoders. All frequencies are in kHz, and all system times are UTC. Schedules and traffic details can be found in our 2021/2022 Guide to Utility Radio Stations. Standard aeronautical • meteorological • telecommunication abbreviations and ICAO Airport Codes and Airline Designators can be found everywhere; certain very special procedures and terms - particularly for avionics - are explained hereunder.


3585.0 kHz HLL8 Soul Meteo, South Korea
GK2A = GEO KOMP Sat 2A = Geostationary Korea Multi Purpose Satellite

7396.7 kHz HSW64 Bangkok Meteo, Thailand

490.0 kHz IQM Mondolfo Radio, Italy

490.0 kHz OST Oostende Radio, Belgium

518.0 kHz UUI Odessa Radio, Ukraine

518.0 kHz EAV Valencia Radio, Spain

5100.0 kHz VMC Charleville Meteo QLD, Australia

518.0 kHz 9HD Valetta Radio, Malta
TM = Tele Malta

4159.5 kHz XSQ Guangzhou Radio, China
New radiofax service, schedule see here

518.0 kHz VBR Canadian Coast Ferndale ONT, Canada

8658.0 kHz JFX Kagoshima Fisheries Radio, Japan
Japanese Coast Guard navigational warnings for NAVAREAs 10 11
The date reads 3 4 9 = 2021 April 9
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year
Tentative schedule see here

8977.0 kHz ACARS/HFDL H03 Reykjavik Air, Iceland, + aircraft A7-ANL + ET-AXS + SU-GEK + 5Y-CYC + 5Y-CYD + 5Y-CYE
DT = Destination, followed by the runway number
FN = Flight Number
PSH = Pushback
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

8977.0 kHz ACARS/HFDL H03 Reykjavik Air, Iceland, + aircraft A6-ATE + G-VOOH + N506DN + N510DN + SU-GEF + 5A-ONL
ADIRU = Air Data Inertial Reference Unit
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
FDIU =Flight Data Interface Unit
FR = Fault Report
MMR = Multi-Mode Receiver
QAR = Quick Access Recording
RDA = Radar Data Acquisition
TI2 = Terminal Information Request
WXR = Weather Radar

8977.0 kHz ACARS/HFDL H03 Reykjavik Air, Iceland, + aircraft JY-AYR + P4-KBH + VP-BTG + VP-BTI + VQ-BTD
FN = Flight Number
WXR = Weather Request
REQPRG = Request Flight Progress Report
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

9281.8 kHz Digital data station

4209.5 kHz XVG Hai Phong Radio, Viet Nam

4209.5 kHz XSQ Guangzhou Radio, China

6559.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft B-304D + JA11KZ + N612UP
Code figures for PANC runways braking action - see e.g. here
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

5508.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft B-2760 + B-5906 + N642FE
TOCG = Take Off Centre of Gravity
ZFCG = Zero Fuel Centre of Gravity
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

518.0 kHz UFL Vladivostok Radio SE, Russian Federation
Warnings still in force - received 081200Z APR 2021

518.0 kHz JGC Yokohama Radio, Japan

13324.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft B-8856 + HL8084 + JA880A + N608FE + N613FE
HIWAS = Hazardous Inflight Weather Advisory Service

13324.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft B-2088 + B-5943 + N882FD
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCA = Facilities Contact Advisory
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

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

10027.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft B-321Q + B-2093 + C-GHPV + HL7617 + N378HA + N621UP
N378HA: POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP, ETO,
temperature, wind, FOB, time stamp, date, HEX serial
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

13342.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft B-305J + B-2485 + B-6329 + B-9921
HCC = Hub Control Center

518.0 kHz NMC United States Coast Guard San Francisco CA, United States of America
Somewhat outdated ... received 070820Z APR 2021

11318.0 kHz ACARS/HFDL H13 Santa Cruz Air, Bolivia, + aircraft A7-BAM + B-1028 + B-2292 + D-AICF + PR-MAK
DOW = Dry Operating Weight
MAC... = Mean Aerodynamic Chord ...
SI = Supplementary Information
TIF = Trip Fuel
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

6422.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

11318.0 kHz ACARS/HFDL H13 Santa Cruz Air, Bolivia, + aircraft CC-BBI + HP9906 + N540LA + flight IBE683
Waypoint list ...
REQPER = Request Performance Report

11318.0 kHz ACARS/HFDL H13 Santa Cruz Air, Bolivia, + flight LAN116

8040.0 kHz GYA Royal Navy London, United Kingdom

8040.0 kHz GYA Royal Navy London, United Kingdom

6565.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft B-8392 + HL7579 + N450PA + N509DN + N614UP
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

4219.0 kHz XSQ Guangzhou Radio, China
Characters in brackets denote the Latin alphabet
The four-figure groups without brackets
are Chinese ideographs -
see page 48 ff. in our Radio Data Code Manual

518.0 kHz VAE Canadian Coast Guard Tofino BC, Canada
Haida Gwaii is the new native name for the former Queen Charlotte Islands

518.0 kHz VAJ Canadian Coast Guard Prince Rupert BC, Canada
Haida Gwaii is the new native name for the former Queen Charlotte Islands

10081.0 kHz ACARS/HFDL H07 Shannon Air, Ireland, + aircraft CS-TKQ + VQ-BHL + VQ-BST
TOBT = Target Off Block Time
TTOT = Target Take Off Time
WXR = Weather Request

518.0 kHz NOJ United States Coast Guard Kodiak, Alaska

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

10081.0 kHz ACARS/HFDL H07 Shannon Air, Ireland, + aircraft JY-AYX
Perfect OOOI...
DT = Destination, followed by the runway number
FCMC = Fuel Control and Monitoring Computer
FLR = Flight Recorder
FN = Flight Number
FR = Fault Report
REQPRG = Request Flight Progress Report
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

8416.5 kHz UAT Moscow Radio, Russian Federation

12579.0 kHz NMF United States Coast Guard Boston MA, United States of America

5508.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft B-5941 + B-7952 + HL7741 + N620UP
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 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

518.0 kHz L2N Argentinian Coast Guard Bahia Blanca, Argentina

4209.5 kHz XVG Hai Phong Radio, Viet Nam

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!!!

8977.0 kHz ACARS/HFDL H03 Reykjavik Air, Iceland, + aircraft TC-LGD + VQ-BCO + 7O-AFB+ flight QTR231
CSAS = Conditioned Service Air System
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
FR = Fault Report
FTIS = Fuel Tank Inerting System
IGGS = Inert Gas Generating System
WN = Warning Number
WXR = Weather Request

3585.0 kHz HLL8 Soul Meteo, South Korea

3585.0 kHz HLL8 Soul Meteo, South Korea

8927.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft B-321L + HL8383 + VP-BUK + 9V-SHJ + 9V-SHL
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

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!!!

12375.5 kHz XSQ Guangzhou Radio, China
New radiofax service, schedule see here

10060.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + flight CSN350

13342.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft B-8325 + B-18910 + EP-MMH + EP-MMQ + VP-BWK + 9V-SMY
C/B = Circuit Board
TI2 = Terminal Information Request
WN = Warning 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

6619.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft A7-ANK + B-6503 + JU1021 + N508DN + N626UP + 9V-SCH
The FRP definition has not yet been identified ... Anyone?
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FMH = Facilities Message Header = Flight Number
FMC = Flight Management Computer
FMS = Flight Management 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

8459.0 kHz NOJ United States Coast Guard Kodiak, Alaska

8314.0 kHz Digital data station, Japan

5514.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft B-5968 + N418LA + N5147A + 9V-SGE
H/S = Hold Short
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

11387.0 kHz ACARS/HFDL H04 Riverhead Air NY, United States of America, + aircraft CN-RGZ + G-VCRU + HZ-AQK + 60016B + 9V-SMH
60016B = Air Mobility Command ...
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

5508.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft B-6543 + B-18906 + HL8258 + N404KZ
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

5508.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft B-5938 + N404KZ + N599FE + 9V-SGA
FOD = Fuel Over Destination
LMTOGW = Limiting Maximum Operational Take-Off Gross Weight
MEL = Minimum Equipment List
MFWF = Minimum Flight Weight Fuel
RPF = Reliability Protection Fuel

5508.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft HL7617 + N508DN + N599FE + N613FE
PAPEE should read PAPI ...
EFB = Electronic Flight Bag
FCR = Flight Crew Report

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

518.0 kHz JNR Moji Radio, Japan

6535.0 kHz ACARS/HFDL H06 Hat Yai Air, Thailand, + aircraft HL8282 + N257NV + 9V-SMB + 9V-SME + 9V-SMO + 9V-SMR + 9V-SMY
CTO = Calculated Take-Off Time (used for slot allocation)
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 codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

4209.5 kHz XSG Shanghai Radio, China

5100.0 kHz VMC Charleville Meteo QLD, Australia

5100.0 kHz VMC Charleville Meteo QLD, Australia

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina
Missing space error by the transmitting station ...

13270.0 kHz ACARS/HFDL H06 Hat Yai Air, Thailand, + aircraft B-8559 + flight CHH781

8416.5 kHz NMO United States Coast Guard Honolulu, Hawaii
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

5583.0 kHz ACARS/HFDL H05 Auckland Air, New Zealand, + aircraft N612UP + 9V-SGF + 9V-SMU
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

10081.0 kHz ACARS/HFDL H07 Shannon Air, Ireland, + aircraft CN-RGY + G-VMAP + UK32016 + VP-BPV + VQ-BEH + VQ-BST
DT = Destination, followed by the runway number
FN = 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
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

8912.0 kHz ACARS/HFDL H04 Riverhead Air NY, United States of America, + aircraft N130FE + N584FE + N613UP
MEL = Minimum Equipment List
MFWF = Minimum Flight Weight Fuel
TI2 = Terminal Information Request
TOCG = Take Off Centre of Gravity
ZFCG = Zero Fuel Centre of Gravity

8912.0 kHz ACARS/HFDL H04 Riverhead Air NY, United States of America, + flight FDX38

8425.5 kHz XSG Shanghai Radio, China

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

518.0 kHz XVS Ho Chi Minh City Radio, Viet Nam
Warnings still in force - received 310350Z MAR 2021

518.0 kHz 9MG Georgetown Radio, Pinang Island, Malaysia

518.0 kHz 9WW21 Miri Radio, Sarawak, Malaysia
Kuching???
Warnings still in force - received 310310Z MAR 2021-->

518.0 kHz XVT Da Nang Radio, Viet Nam

6652.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft B-360AE + B-304P + B-309R + B-8571 + N625UP + N5147A + PK-GNO + VN-A222
ATSU = Air Traffic Service Unit
CFDS = Centralized Fault Display System
FLR = Flight Recorder
FR = Fault Report
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

518.0 kHz JNB Naha Radio, Okinawa Island, Japan

4219.0 kHz XSQ Guangzhou Radio, China

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

518.0 kHz LZW Varna Radio, Bulgaria

518.0 kHz OXJ Torshavn Radio, Faroe Islands, Denmark

518.0 kHz DDH9 Hamburg Meteo, Germany

10081.0 kHz ACARS/HFDL H07 Shannon Air, Ireland, + aircraft P4-KBE + P4-KDD + P4-KDF + VP-BLL + VQ-BSU + VQ-BWG + 9XR-WQ

518.0 kHz Magallanes Radio, Chile

518.0 kHz Puerto Montt Radio, Chile

4209.5 kHz XVN Nha Trang Radio, Viet Nam
Warnings still in force - received 290420Z MAR 2021

4209.5 kHz XVG Hai Phong Radio, Viet Nam

5508.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft N512DN + XA-AMX
Detailed MMMX - EHAM L/R General Electric turbofan engine data ...

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina
Warnings still in force - received 28 MAR 2021

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina
Warnings still in force - received 28 MAR 2021

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina
Warnings still in force - received 28 MAR 2021

13324.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft N503DN + N508DN + N625UP + XA-AMX
EFF = Electronic Flight Folder
PCC = Planning Coordination Controller

13324.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft N503DN
Detailed WP / ETO / FL / FOB calculation ...
ETE = Estimated Time Elapsed
ETO = Estimated Time of Overfly
ETP = Equitime Point
FMS = Flight Management System
PFL = Planned Flight Level
PFR = Planned Fuel Remaining
PLND = Planned Time
RDC = Route Data Calculation

13324.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft B-6058 + JA839A + N237NV + N504DN + N5147A
ASMGCS = Advanced Surface Movement Guidance and Control Systems
PACK = Pressurization Air Conditioning Kit
PDC = Pre-Departure Clearance

13033.0 kHz FUF French Navy Fort de France, Martinique
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

518.0 kHz L2T Argentinian Coast Guard Mar del Plata, Argentina

6535.0 kHz ACARS/HFDL H06 Hat Yai Air, Thailand, + aircraft A7-ANM + B-6080 + B-18916 + 9V-SCE + 9V-SMG
FLR = Flight Recorder
FR = Fault Report
PSCU = Proximity Switch Control Unit
WN = Warning 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
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

8658.0 kHz JFX Kagoshima Fisheries Radio, Japan
NOAA satellite settings for JRC / FURUNO fish finder equipment
The date reads 3 3 27 = 2021 March 27
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year
Tentative schedule see here

6652.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft B-30DF + B-322Q + B-6916 + B-8689 + HL8293 + N102FE
MFWF = Minimum Flight Weight Fuel
TI2 = Terminal Information Request
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
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

518.0 kHz ICH Italian Coast Guard La Maddalena Island, Italy

518.0 kHz 4XO Haifa Radio, Israel

518.0 kHz Izmir Radio, Turkey

518.0 kHz SVH Iraklion Radio, Greece

518.0 kHz Antalya Radio, Turkey

6619.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft B-2091 + B-2291 + HL7736 + JA16KZ + 9H-PGS
9H-PGS is an Airbus A340-642X on ACMI lease
ACMI = Aircraft + Crew + Maintenance + Insurance
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 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

17928.0 kHz ACARS/HFDL H17 Telde Air, Canary Islands, + aircraft SU-GDX + SU-GEI + VP-BIF
DT = Destination, followed by the runway number
FN = Flight Number
TOBT = Target Off Block Time
TTOT = Target Take Off Time
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

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

11318.0 kHz ACARS/HFDL H13 Santa Cruz Air, Bolivia, + aircraft ET-ASG + PR-YYE + flight TAM324
Flight parameters SBSL - SBIZ ...
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

11348.0 kHz ACARS/HFDL H17 Telde Air, Canary Islands, + flight ACA722

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

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

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

4209.5 kHz XSV Tianjin Radio, China

6619.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft B-2411 + B-6546 + B-6930 + F-HRBE + HL8293 + N508KZ
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
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 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

6565.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft B-2039 + N582FE + N862FD
KLAX reed-ing again ;-))
TOCG = Take Off Centre of Gravity
TX = Taxi Fuel
ZFCG = Zero Fuel Centre of Gravity
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

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

6559.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + flight UP0916

518.0 kHz NMA United States Coast Guard Miami FL, United States of America

13276.0 kHz ACARS/HFDL H04 Riverhead Air NY, United States of America, + aircraft B-308L + N562FE + N578UP + SU-GEN + 5Y-CYA
PANC runway lengths ...
PIC = Pilot In Command
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

4227.5 kHz IDR Italian Navy Rome, Italy

13074.0 kHz JFC Misaki Fisheries Radio, Japan
The date reads 3 3 23 = 2021 March 23
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year
Tentative schedule see here

13074.0 kHz JFC Misaki Fisheries Radio, Japan
The date reads 3 3 23 = 2021 March 23
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year
Tentative schedule see here

8977.0 kHz ACARS/HFDL H03 Reykjavik Air, Iceland, + aircraft JY-AYR + VP-BIM + 5Y-CYA + 9V-SCK
ECS = Environmental Control System
EENT = End of Evening Nautical Twilight

518.0 kHz XSZ Dalian Radio, China

8927.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft N257NV + VQ-BVR + VT-IEL + 9V-SMY + flight CAL205
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
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

13276.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft B-20AA + N617UP + N620UP + N5147A
ARFF = Aircraft Rescue and Fire Fighting
EEP = ETOPS Entry Point
ETP = Equitime Point
A SNOWTAM decoder can be found e.g. here

13988.5 kHz JMH4 Tokyo Meteo, Japan

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

5583.0 kHz ACARS/HFDL H05 Auckland Air, New Zealand, + aircraft B-18908 + flight EVA316

8927.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft B-6556 + N101FE + N609UP + N880FD
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

21928.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + flight SIA226

13276.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft B-20AA + N609FE + N618UP + 9V-SHJ
E/O GRAD = Engine Inoperative Approach Climb Gradient
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
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

3622.5 kHz JMH Tokyo Meteo, Japan
The date below reads 3 3 19 17 = 2021 March 19 1700 Japan Time
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

6652.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft B-2097 + B-8577 + N102FE
B-8577 = route forecast ...
PDC = Pre-Departure Clearance
TI2 = Terminal Information Request
TOCG = Take Off Centre of Gravity
ZFCG = Zero Fuel Centre of Gravity

518.0 kHz A9M Hamala Radio, Bahrain
Warnings still in force - received 121610Z MAR 2021
MENAS = Middle East Navigation Aids Service
MEGULITE = Middle East Gulf Lighting Service

518.0 kHz 5BA Nicosia Radio, Cyprus

6652.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft B-30EK + B-1540 + B-6325 + N610UP + 9V-SGD + flight CSC883
AFS = Auto Flight System
FADEC = Full Authority Digital Engine Control
FLR = Flight Recorder
FR = Fault Report
RMP = Radio Management Panel
TI2 = Terminal Information Request
TPIS = Tire Pressure Indicator System
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
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

518.0 kHz Sellia Marina Radio, Italy
Ragazzi, la lingua nazionale dev'essere trasmessa sulle 490 kHz
e non sulle 518 kHz ... Te capì? Sperumma!
Saluti Giorgio www.rimella.com in Valsesiano ...

4159.5 kHz XSQ Guangzhou Radio, China
New radiofax service, schedule see here

8425.5 kHz XSG Shanghai Radio, China
Characters in brackets denote the Latin alphabet
The four-figure groups without brackets
are Chinese ideographs -
see page 48 ff. in our Radio Data Code Manual

14537.8 kHz Digital data station

22448.8 kHz FUV French Navy Jibuti, Djibouti
Difficult decoding - above the MUF ...

8977.0 kHz ACARS/HFDL H03 Reykjavik Air, Iceland, + flight CCA575

13321.0 kHz ACARS/HFDL H08 Johannesburg Air, South Africa (Republic of), + flight AIC193

7433.5 kHz HLL5 Soul Meteo, South Korea

4583.0 kHz DDK2 Hamburg Meteo, Germany
SHIP code see page 299 ff. in our Radio Data Code Manual

8699.2 kHz CTA North Atlantic Treaty Organization Lisbon, Portugal

11184.0 kHz ACARS/HFDL H03 Reykjavik Air, Iceland, + aircraft VT-ANC
CISS =Configurable Integrated Surveillance System
DB = Data Base
DCA = Data Communication Architecture
FDE = Fault Detection and Exclusion
FRC = Fuel Ratio Control
FSM = Flight System Message
GPM = General Processing Module
NCMM = Network Channel Management Monitor
PACK = Pressurization Air Conditioning Kit
PDHM = Prognostic and Diagnostic Health Monitor
PECS = Primary Electronics Cooling System

7535.0 kHz VMW Wiluna Meteo WA, Australia

8927.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft HL7617 + HL7740 + N102FE + 9V-SCB
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

16806.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

16027.9 (!) kHz KVM70 Honolulu Meteo, Hawaii
Unscheduled frequency with heavy echo effect ...

3585.0 kHz HLL Soul Meteo, South Korea

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

4209.5 kHz XVN Nha Trang Radio, Viet Nam
Warnings still in force - received 121620Z MAR 2021

4209.5 kHz XVG Hai Phong Radio, Viet Nam

518.0 kHz SVL Limnos Radio, Greece

8459.0 kHz NOJ United States Coast Guard Kodiak, Alaska

518.0 kHz L2G Argentinian Coast Guard Buenos Aires, Argentina

6661.0 kHz ACARS/HFDL H04 Riverhead Air NY, United States of America, + aircraft B-2091 + B-5937 + B-8365 + F-HRBE + N344KD + N607UP + N17002
FLR = Flight Recorder
FR = Fault Report
WN = Warning Number
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 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

16559.0 kHz XSG Shanghai Radio, China

16559.0 kHz XSG Shanghai Radio, China

518.0 kHz PBK Netherlands Coast Guard Ijmuiden, Netherlands

518.0 kHz GPK Portpatrick Radio, United Kingdom

5502.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft B-6825 + HL7794 + N620UP
DCL = Departure Clearance
PDC = Pre-Departure Clearance
TI2 = Terminal Information Request
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
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

8454.8 kHz FUG French Navy Saissac, France

12579.0 kHz UAT Moscow Radio, Russian Federation

4209.5 kHz SVH Iraklion Radio, Greece

518.0 kHz JNL Otaru Radio, Japan

518.0 kHz HSA Bangkok Radio, Thailand

518.0 kHz HSA Bangkok Radio, Thailand

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

8302.0 kHz XSG Shanghai Radio, China

8302.0 kHz XSG Shanghai Radio, China

11039.0 kHz DDH9 Hamburg Meteo, Germany

490.0 kHz EAR La Coruna Radio, Spain

490.0 kHz EJM Irish Coast Guard Malin Head, Ireland

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

8459.0 kHz NOJ United States Coast Guard Kodiak, Alaska

10084.0 kHz ACARS/HFDL H05 Auckland Air, New Zealand, + aircraft B-322J + HL7794 + N623UP + flight SIA33

8424.0 kHz SVO Olympia Radio, Athens, Greece

4209.5 kHz TAH Istanbul Radio, Turkey

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

4209.5 kHz XVN Nha Trang Radio, Viet Nam

5100.0 kHz VMC Charleville Meteo QLD, Australia

6460.0 kHz UFZ Vladivostok Radio SE, Russian Federation

8942.0 kHz ACARS/HFDL H07 Shannon Air, Ireland, + aircraft G-VNEW + JY-AYN + N611UP + 9XR-WQ + flight WB0501
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

9023.8 kHz Digital data station

518.0 kHz NMO United States Coast Guard Honolulu, Hawaii

21949.0 kHz ACARS/HFDL H06 Hat Yai Air, Thailand, + aircraft XA-ADD
Pretty good propagation up here for the sunspot minimum ...
On the left is Barrigada Air, Guam, on 21928.0 kHz
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 codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

6450.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil
Unknown meteorological code ...

518.0 kHz SUZ Serapeum Radio, Egypt

12386.0 kHz Digital data station, Japan
Continuous pilot tone on the left, so it's 32 channel PSK!

518.0 kHz TFX Siglufjördur Radio, Iceland

10084.0 kHz ACARS/HFDL H05 Auckland Air, New Zealand, + aircraft B-308W + B-6167 + VP-BJW
TOBT = Target Off Block Time
TTOT = Target Take Off Time

13570.0 kHz HLL5 Soul Meteo, South Korea

6589.0 kHz ACARS/HFDL H11 Panama City Air, Panama, + aircraft B-2092 + N108FE + N420LA + N538LA
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 codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

6589.0 kHz ACARS/HFDL H11 Panama City Air, Panama, + flight UAL847

518.0 kHz XSG Shanghai Radio, China

518.0 kHz NMN United States Coast Guard Norfolk VA, United States of America

490.0 kHz Byunsan Radio, South Korea
Very weak signal, however ... "KOREA NAVTEX// DIZCSA CLAADK// ..."
is the typical header preceding messages in Korean using the Han Gul alphabet -
see page 234 ff. in our Radio Data Code Manual

490.0 kHz CBV Valparaiso Radio, Chile
Actually transmitting on 489.95 kHz and with a shift of 100 instead of 170 Hz ...

8416.5 kHz NMO United States Coast Guard Honolulu, Hawaii

8459.0 kHz NOJ United States Coast Guard Kodiak, Alaska

3247.4 kHz ZKLF Auckland Meteo, New Zealand

4209.5 kHz XVN Nha Trang Radio, Viet Nam

8570.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

8570.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil
Slightly corrupted ... read METEOROLOGICAL, not MAGICAL ;-))

518.0 kHz Vakalpudi Radio, India

8912.0 kHz ACARS/HFDL H04 Riverhead Air NY, United States of America, + aircraft C-FVLZ + N857GT + N27903

10084.0 kHz ACARS/HFDL H05 Auckland Air, New Zealand, + aircraft HL7741 + JA819P + N506DN + VQ-BHW

10084.0 kHz ACARS/HFDL H05 Auckland Air, New Zealand, + aircraft B-2788 + B-18912 + N123FE + VP-BTK

7795.0 kHz JMH2 Tokyo Meteo, Japan

7795.0 kHz JMH2 Tokyo Meteo, Japan
TD = Tropical Depression = ex Tropical Storm AURING

3585.0 kHz HLL8 Soul Meteo, South Korea

10081.0 kHz ACARS/HFDL H07 Shannon Air, Ireland, + aircraft JY-AYX + VP-BAV + VP-BFQ + 5A-ONA
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI
BMC = Bleed Monitoring Computer
ECU = Electronic Control Unit
EIU = Engine Interface Unit
FADEC = Full Authority Digital Engine Control
FLR = Flight Recorder
FR = Fault Report
WN = Warning Number

518.0 kHz VCG Canadian Coast Guard Moisie QUE, Canada

4272.8 kHz FUJ French Navy Noumea, New Caledonia

518.0 kHz PKX Jakarta Radio, Indonesia

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

518.0 kHz Grimeton Radio, Sweden

9110.0 kHz NMF United States Coast Guard Boston MA, United States of America

9110.0 kHz NMF United States Coast Guard Boston MA, United States of America

8682.0 kHz NMC United States Coast Guard San Francisco CA, United States of America

8682.0 kHz NMC United States Coast Guard San Francisco CA, United States of America

518.0 kHz SVK Kerkyra Radio, Greece

5195.0 kHz DRA5 Kiel, Germany

3855.0 kHz DDH3 Hamburg Meteo, Germany

8570.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

13315.0 kHz ACARS/HFDL H13 Santa Cruz Air, Bolivia, + aircraft PR-TYN
CFDS = Centralized Fault Display System
CIDS = Cabin Intercommunication Data System
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
ECAM = Electronic Centralized Aircraft Monitoring
FR = Fault Report
SDF = Simplified Directional Facility
WN = Warning Number

518.0 kHz Parangipettai Radio, India

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

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

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

518.0 kHz UFO Kholmsk Radio SE, Russian Federation

518.0 kHz Byunsan Radio, South Korea

5502.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft JA11VA + SP-LSE + VP-BLN + VQ-BEG + VQ-BMX
ZBAA runway lengths, according to the rapid exit taxiway used ...

17958.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft B-LNX + ET-AUB + P4-KBF
The Vertical Rate Change Event is triggered
when the aircraft's vertical rate is either less or greater
than a parameter defined in the contract

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

518.0 kHz LFO Oerlandet Radio, Norway

2610.2 kHz FUO French Navy Toulon, France

6450.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

490.0 kHz GCC Cullercoats Radio, United Kingdom

490.0 kHz GNI Niton Radio, United Kingdom

490.0 kHz 9AS Split Radio, Croatia

6220.0 kHz IDN Italian Navy Napoli, Italy

10084.0 kHz ACARS/HFDL H05 Auckland Air, New Zealand, + aircraft B-30DK + B-8490 + N889FD + VP-BUO
CBDO = Cabin Door Open
CGDO = Cargo Door Open
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
LLD = Large Lateral Deviation = 10 NM or more without ATC approval

518.0 kHz ESA Tallinn Radio, Estonia

518.0 kHz EJK Irish Coast Guard Valentia, Ireland

518.0 kHz 3VL Kelibia Radio, Tunisia

8948.0 kHz ACARS/HFDL H17 Telde Air, Canary Islands, + aircraft F-HRBC + P4-KBF + P4-KBM + SU-GDB + SU-GEN + VQ-BKU

8942.0 kHz ACARS/HFDL H07 Shannon Air, Ireland, + aircraft A6-EVG + flight QTR136

16135.0 kHz KVM70 Honolulu Meteo, Hawaii

16135.0 kHz KVM70 Honolulu Meteo, Hawaii

16135.0 kHz KVM70 Honolulu Meteo, Hawaii

16135.0 kHz KVM70 Honolulu Meteo, Hawaii
ITCZ = Inter-Tropical Convergence Zone

16135.0 kHz KVM70 Honolulu Meteo, Hawaii
ITCZ = Inter-Tropical Convergence Zone

7795.0 kHz JMH2 Tokyo Meteo, Japan

7795.0 kHz JMH2 Tokyo Meteo, Japan

8948.0 kHz ACARS/HFDL H17 Telde Air, Canary Islands, + aircraft HZ-AQL + HZ-NS24 + JY-AYN + VQ-BTT + 9N-ALM
AFS = Auto Flight System
BSCU = Brake System Control Unit
FLR = Flight Recorder
FR = Fault Report
WN = Warning Number

8948.0 kHz ACARS/HFDL H17 Telde Air, Canary Islands, + aircraft JY-AYN + N508DN + N877FD + P4-KBF
FLR = Flight Recorder
FLSCU = Fuel Level Sensing Control Unit
FR = Fault Report
MMR = Multi-Mode Receiver
SSU = System Sensor Unit

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

9780.0 kHz Radio New Zealand Pacific DRM transmission
decoded with the Kiwi-SDR extension feature

518.0 kHz JNX Kushiro Radio, Japan

518.0 kHz ZBM Hamiltoun Harbour Radio, Bermuda

518.0 kHz EQM Bushire Radio, Iran

490.0 kHz Taganrog Radio, Russian Federation

518.0 kHz EQI Abbas Radio, Iran

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

518.0 kHz Gislovshammar Radio, Sweden

13315.0 kHz ACARS/HFDL H13 Santa Cruz Air, Bolivia, + aircraft EC-MXV + PR-TYK + flight LAN958
WN = Warning Number

17916.0 kHz ACARS/HFDL H05 Auckland Air, New Zealand, + aircraft N621UP + N842FD
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 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

7880.0 kHz DDK3 Hamburg Meteo, Germany

6565.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft B-6543 + flight KAL284

8424.0 kHz UDK Murmansk Radio, Russian Federation

13276.0 kHz ACARS/HFDL H04 Riverhead Air NY, United States of America, + aircraft A7-ANE + C-FIVQ + VP-BUO + flight FX1100
Landing data for CYYZ Runway 23 ...
DA = Decision Altitude
MDA = Minimum Decision Altitude
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

9110.0 kHz NMF United States Coast Guard Boston MA, United States of America

8834.0 kHz ACARS/HFDL H08 Johannesburg Air, South Africa (Republic of), + aircraft SU-GEF + 5Y-CYB + flight CCA432 + QTR1CC + QTR3GG
EENT = End of Evening Nautical Twilight
GW = Gross Weight

518.0 kHz Sandakan Radio, Sabah, Malaysia

5179.0 kHz RMP Commonwealth of Independent States Navy Kaliningrad, Russian Federation

8658.0 kHz JFX Kagoshima Fisheries Radio, Japan
Tentative schedule see here

5583.0 kHz ACARS/HFDL H05 Auckland Air, New Zealand, + aircraft N513DZ
EET = ETOPS Entry Point
ETP = Equitime Point
EXP = Exit Point

5583.0 kHz ACARS/HFDL H05 Auckland Air, New Zealand, + aircraft N513DZ
PFL = Planned Flight Level
PFR = Planned Fuel Remaining
PLND = Planned Time

518.0 kHz LGT Tjoeme Radio, Norway

518.0 kHz UHY Murmansk Radio, Russian Federation

518.0 kHz EAL Las Palmas Radio, Canary Islands

518.0 kHz UDN Novorossiysk Radio, Russian Federation

518.0 kHz RFA Astrakhan Radio, Russian Federation

3585.0 kHz HLL8 Soul Meteo, South Korea

12789.9 kHz NMG United States Coast Guard New Orleans LA, United States of America

518.0 kHz XSI Sanya Radio, China

518.0 kHz L3I Argentinian Coast Guard Rio Gallegos, Argentina

518.0 kHz L3O Argentinian Coast Guard Ushuaia, Argentina

12789.9 kHz NMG United States Coast Guard New Orleans LA, United States of America

12789.9 kHz NMG United States Coast Guard New Orleans LA, United States of America

12789.9 kHz NMG United States Coast Guard New Orleans LA, United States of America
ITCZ = Inter-Tropical Convergence Zone

12789.9 kHz NMG United States Coast Guard New Orleans LA, United States of America

11321.0 kHz ACARS/HFDL H08 Johannesburg Air, South Africa (Republic of), + aircraft B-60094 + S7-PTI + UR-CSU + flight CSZ959
Technical parameters FSIA - FAOR ...

518.0 kHz Grindavik Radio, Iceland

518.0 kHz Bjuroklubb Radio, Sweden

8459.0 kHz NOJ United States Coast Guard Kodiak, Alaska

7396.7 kHz HSW64 Bangkok Meteo, Thailand

518.0 kHz VAU Canadian Coast Guard Chebogue NS, Canada

8302.0 kHz XSG Shanghai Radio, China

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

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

8477.3 kHz FUX French Forces Le Port de la Riviere des Galets, Reunion

490.0 kHz CTV Portuguese Navy Lisbon, Portugal

13270.0 kHz ACARS/HFDL H06 Hat Yai Air, Thailand, + aircraft B-6890 + VT-IFP + 9V-SCC
PBN = Performance Based Navigation
The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

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

490.0 kHz UON Baku Radio, Azerbaijan

3622.5 kHz JMH Tokyo Meteo, Japan

6422.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

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

6349.8 kHz FUE French Navy Brest, France

8106.9 kHz SWA28 Athens Meteo, Greece
New schedule see here

8106.9 kHz SWA28 Athens Meteo, Greece
New schedule see here

8106.9 kHz SWA28 Athens Meteo, Greece
New schedule see here

13270.0 kHz ACARS/HFDL H06 Hat Yai Air, Thailand, + aircraft B-LID + B309Q + B-6172 + HL8362 + VN-A510
BTMS = Brake Temperature Monitoring System
MEL = Minimum Equipment List

3247.4 kHz ZKLF Auckland Meteo, New Zealand

7795.0 kHz JMH2 Tokyo Meteo, Japan

490.0 kHz IGS Piombino Radio, Italy

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

518.0 kHz Arkhangelsk Radio, Russian Federation

8503.9 kHz NMG United States Coast Guard New Orleans LA, United States of America

3855.0 kHz DDH3 Hamburg Meteo, Germany

518.0 kHz 7TA El Djaza'ir Radio, Algeria

8416.5 kHz LGS Svalbard Radio, Spitsbergen, Norway

8424.0 kHz SVO Olympia Radio, Athens, Greece

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

7748.3 kHz TBB Turkish Navy Ankara, Turkey

2474.0 kHz PBB Dutch Navy Den Helder, Netherlands

16953.3 kHz 6WW French Navy Dakar, Senegal

8948.0 kHz ACARS/HFDL H17 Telde Air, Canary Islands, + aircraft A7-AMI + B-308P + F-HRBD + HP1837
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

8834.0 kHz ACARS/HFDL H08 Johannesburg Air, South Africa (Republic of), + aircraft UR-CSU + 9XR-WG

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

4681.0 kHz ACARS/HFDL H08 Johannesburg Air, South Africa (Republic of), + aircraft 9V-SHB + 9V-SMB
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 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
The CPDLC ADS-C message headers
- such as "UM130" - are defined e.g. in
ICAO's Global Operational Data Link Manual here or here

8459.0 kHz NOJ United States Coast Guard Kodiak, Alaska

16559.0 kHz XSG Shanghai Radio, China

16559.0 kHz XSG Shanghai Radio, China

518.0 kHz VOK Canadian Coast Guard Cartwright, NFLD, Canada

4349.7 kHz Digital data station
The four-figure groups are Chinese ideographs -
see page 48 ff. in our Radio Data Code Manual

10075.0 kHz ACARS/HFDL H15 Muhurroq Air, Bahrain, + aircraft P4-KBC

518.0 kHz L3B Argentinian Coast Guard Comodoro Rivadavia, Argentina

8416.5 kHz VFF Canadian Coast Guard Iqaluit NUN, Canada

8416.5 kHz VFF Canadian Coast Guard Iqaluit NUN, Canada

10075.0 kHz ACARS/HFDL H15 Muhurroq Air, Bahrain, + aircraft HZ-NS29 + JY-AYV + SU-GCN + VP-BPL
Apart from decoding ADS-C and CPDLC messages such as
Periodic Reports, go2MONITOR displays meta-data such as
sender and recipient identifications, extracted from decoder result files

8885.0 kHz ACARS/HFDL H15 Muhurroq Air, Bahrain, + aircraft EC-NCK
So what the hell are these Wamos Air charter chaps operating
with several (!) unreliable navigation systems in a war zone
picking up US troops out of the AFG hellhole to LEMD?
IR = Inertial Reference
MMR = Multi-Mode Receiver
Apart from decoding ADS-C and CPDLC messages such as
Periodic Reports, go2MONITOR displays meta-data such as
sender and recipient identifications, extracted from decoder result files

6330.5 kHz OSY Sailmail Radio, Brugge, Belgium
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

518.0 kHz PKF Ujung Pandang Radio, Indonesia
Ship tracks ETA Berhanti Horseburgh Raffles etc lighthouses ...

8677.0 kHz CBV Valparaiso Radio, Chile

8677.0 kHz CBV Valparaiso Radio, Chile

518.0 kHz ZSQ Port Elizabeth Radio, South Africa (Republic of)

8040.0 kHz GYA Royal Navy London, United Kingdom

8040.0 kHz GYA Royal Navy London, United Kingdom

11086.5 kHz GYA Royal Navy London, United Kingdom

6825.0 kHz FAV22 French Army Mont-Valerien, France
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

10093.0 kHz ACARS/HFDL H09 Barrow Air, Alaska, + flight UPS33

3855.0 kHz DDH3 Hamburg Meteo, Germany

3855.0 kHz DDH3 Hamburg Meteo, Germany

12235.0 kHz 7CB Indonesian Navy Belawan, Indonesia

10075.0 kHz ACARS/HFDL H15 Muhurroq Air, Bahrain, + flight FDX980

3341.0 kHz FC8FEM Federal Emergency Management Agency Denver CO + FR9FEM Federal Emergency Management Agency Oakland CA + FC0FEM Federal Emergency Management Agency Bothell WA, United States of America

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

16067.7 kHz Ministry of Foreign Affairs Cairo, Egypt

8134.7 kHz 99901 Ministry of Foreign Affairs Cairo, Egypt, to 44406 Egyptian Embassy Delhi, India
Apart from decoding ADS-C and CPDLC messages such as
Periodic Reports, go2MONITOR displays meta-data such as
sender and recipient identifications, extracted from decoder result files

9046.7 kHz Ministry of Foreign Affairs Cairo, Egypt, to Egyptian Embassy Washington DC, United States of America
A pretty long one ...

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 2021 edition of our Perseus Frequency Database
now shows utility stations' callsigns as well!

8454.8 kHz FUG French Navy Saissac, France
New 2021 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 2021 edition of our Perseus Frequency Database
now shows utility stations' callsigns as well!

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

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

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

More than 21,000 (twenty one thousand!) fascinating screenshots are available on our unique Digital Data Decoder Screenshots USB Stick!