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.


6460.0 kHz UFZ Vladivostok Radio SE, Russian Federation

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

11312.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft N580UP
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
A NOTAM decoder can be found e.g. here
Code figures for PANC runways 07L 07R 33 braking action - see e.g. here
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 Kao-Hsiung Radio, Taiwan (Democratic Republic of China)

10027.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft N580UP
A NOTAM decoder can be found e.g. here
Code figures for PANC runway 07R braking action - see e.g. here
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

10027.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft B-6538 + N582NW
Flight parameters and enroute weather ZSPD - KLAX ...

6661.0 kHz ACARS/HFDL H04 Riverhead Air NY, United States of America, + aircraft JA828A + N597FE + N858GT + flight QTR725
EEP = ETOPS Entry Point
ZFCG = Zero Fuel Centre of Gravity

518.0 kHz GPK Portpatrick Radio, United Kingdom

5720.0 kHz ACARS/HFDL H03 Reykjavik Air, Iceland, + aircraft 7T-VJX
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI
ADIRU = Air Data Inertial Reference Unit
BMC = Bleed Monitoring Computer
CIDS = Cabin Intercommunication Data System
ECS = Environmental Control System
FLR = Flight Recorder
FR = Fault Report
PACK = Pressurization Air Conditioning Kit
PES = Passenger Entertainment System
VSC = Vacuum System Controller
WN = Warning Number
WXR = Weather Radar
XPDR = Transponder

518.0 kHz EJM Irish Coast Guard Malin Head, Ireland

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

10081.0 kHz ACARS/HFDL H07 Shannon Air, Ireland, + aircraft D-ALXX + EC-NIG + P4-KBA + P4-KBL + VQ-BDB + 9XR-WG
D-ALXX is a K5 Aviation Airbus A319CJ private charter aircraft ...
... some "VVIP" returning from a weekend trip to the Maldives?!

13270.0 kHz ACARS/HFDL H06 Hat Yai Air, Thailand, + aircraft B-301F + B-18903 + 9V-SCC + 9V-SHK
Type of WINTEM for certain enroute wapoints -
see page 327 ff. in our Radio Data Code Manual
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

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

17919.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + flight CES534

8416.5 kHz NMO United States Coast Guard Honolulu, Hawaii

13276.0 kHz ACARS/HFDL H04 Riverhead Air NY, United States of America, + flight QTR8UH

10027.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft 5Y-CYD
Now how crazy is that: ATIS and METAR for a flight ex HKNA to OMDB -
via a HFDL station in ... Hawaii!

8416.5 kHz NMC United States Coast Guard San Francisco CA, United States of America
ITCZ = Inter-Tropical Convergence Zone

8459.0 kHz NOJ United States Coast Guard Kodiak, Alaska

3247.4 kHz ZKLF Auckland Meteo, New Zealand

10081.0 kHz ACARS/HFDL H07 Shannon Air, Ireland, + aircraft F-HTYC + N19951 + VP-BTL + flight SU1302

10081.0 kHz ACARS/HFDL H07 Shannon Air, Ireland, + aircraft CN-NMJ + N19951 + VP-BFG + VP-BFH + VP-BPX + VP-BQE + VP-BQM + VP-BTL + VP-BZR + VQ-BWG
AFS = Auto Flight System
EIU = Engine Interface Unit
FADEC = Full Authority Digital Engine Control
FLR = Flight Recorder
FR = Fault Report
HMU = Hydro Mechanical Unit
LPTC = Low Pressure Turbine Control
RTOK = Re-Test Okay
TOBT = Target Off Block Time
TTOT = Target Take Off Time
WN = Warning Number
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

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

4209.5 kHz XVN Nha Thrang Radio, Viet Nam

4209.5 kHz XVG Hai Phong Radio, Viet Nam

5720.0 kHz ACARS/HFDL H03 Reykjavik Air, Iceland, + aircraft EP-MMH + SU-GDZ + SU-GEF + VP-BDN + VP-BKZ + VP-BOE + VT-ANW
AMU = Audio Management Unit
EPESC = Enhanced Passenger Entertainment System Controller
FLR = Flight Recorder
FR = Fault Report
PES = Passenger Entertainment System
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

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

10084.0 kHz ACARS/HFDL H05 Auckland Air, New Zealand, + aircraft B-30DR + HL8258 + JA897A + VP-BTO
TOBT = Target Off Block Time
TTOT = Target Take Off Time

12637.5 kHz XSG Shanghai Radio, China

10084.0 kHz ACARS/HFDL H05 Auckland Air, New Zealand, + flight RJA551

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 ;-))

4209.5 kHz SVH Iraklion Radio, Greece
Warnings still in force - received 251900Z FEB 2021

11312.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft N580UP + N20904
HIWAS = Hazardous Inflight Weather Advisory Service
LLWS = Low Level Wind Shear
UDDFS = Updrafts and Downdrafts

6619.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft PK-GNT + 9V-SCF + 9V-SCG + 9V-SHD
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

17958.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft A6-BLY + B-LJA + B-5961 + B-6543 + VN-A625
ATIMS = Air Traffic and Information Management System
ATSU = Air Traffic Service Unit
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
FLR = Flight Recorder
FR = Fault Report
TPIS = Tire Pressure Indicator System
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

17958.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft B-6445 + flight CCA422

13074.0 kHz JFC Misaki Fisheries Radio, Japan
Japanese Coast Guard navigational warnings for NAVAREAs 10 11
The date reads 3 2 25 = 2021 February 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 IQM Mondolfo Radio, Italy

518.0 kHz HSA Bangkok Radio, Thailand

4209.5 kHz XVN Nha Thrang Radio, Viet Nam

518.0 kHz JNB Naha Radio, Okinawa Island, Japan

518.0 kHz 9MG Georgetown Radio, Pinang Island, Malaysia
Warnings still in force - received 231920Z FEB 2021

518.0 kHz Vakalpudi Radio, India

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

10063.0 kHz ACARS/HFDL H11 Panama City Air, Panama, + aircraft N422AV + + flight FY0841

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

8424.0 kHz SVO Olympia Radio, Athens, Greece
Received via a Kiwi-SDR in Australia!

7795.0 kHz JMH2 Tokyo Meteo, Japan

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

4209.5 kHz XSQ Guangzhou Radio, China

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

3585.0 kHz HLL8 Soul Meteo, South Korea

3585.0 kHz HLL8 Soul Meteo, South Korea

6619.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft B-LJH + B-30C0 + B-6631 + HL7747 + N580UP + N620UP + N857GT
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

6652.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft B-LJH + B-LXK + B-30F0 + VN-A508 + VN-A622 + 9V-SCE + 9V-SHE
Landing data for UUDD runway 32L ...
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

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

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

Tropical Storm AURING (DUJUAN) - the first TS of 2021 in the West Pacific ...

17919.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft B-30D1 + B-30FE + B-320Q + N508DN
PACD is an ETOPS emergency alternate airport for trans-Pacific flights ...

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina
RDP = Rio de la Plata

518.0 kHz UUI Odessa Radio, Ukraine

490.0 kHz Sellia Marina Radio, Italy

16806.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

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

10081.0 kHz ACARS/HFDL H07 Shannon Air, Ireland, + aircraft B-LNV + B-308L + B-8890 + B-8891 + P4-KBF + VP-BFG + VP-BTA + VQ-BPI
FCMC = Fuel Control and Monitoring Computer
FLR = Flight Recorder
FR = Fault Report
TOBT = Target Off Block Time
TTOT = Target Take Off Time

6619.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft B-LXE + B-30EJ + B-2420 + B-6885 + PK-GNJ + VQ-BFE
DCL = Departure Clearance
PDC = Pre-Departure Clearance

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

518.0 kHz VCG Canadian Coast Guard Moisie QUE, Canada

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

4209.5 kHz XSQ Guangzhou Radio, China

Tropical Storm AURING (DUJUAN) - the first TS of 2021 in the West Pacific ...

4272.8 kHz FUJ French Navy Noumea, New Caledonia

8927.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft B-LRG + B-307D + B-2292 + B-6012 + B-8276 + B-8493 + VN-A829

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

21949.0 kHz ACARS/HFDL H06 Hat Yai Air, Thailand, + aircraft JA874A + flight CES525
Pretty good propagation up here for the sunspot minimum ...

518.0 kHz PKX Jakarta Radio, Indonesia

518.0 kHz OXJ Torshavn Radio, Faroe Islands, Denmark

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

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

8912.0 kHz ACARS/HFDL H04 Riverhead Air NY, United States of America, + aircraft N2508DN
Code figures for KDTW runways braking action - see e.g. here

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

6559.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft B-5943 + N134FE
B-5943 riding on the North Pacific Jet Stream near Japan
at nearly 700 knots = 1200+ kilometres per hour ...
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

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

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

518.0 kHz VAE Canadian Coast Guard Tofino BC, Canada

518.0 kHz NOJ United States Coast Guard Kodiak, Alaska

11312.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft B-8221 + HL7771 + N612UP + N613UP + N615UP + N621UP
Code figures for PANC runway 07L 07R 33 braking action - see e.g. here

17919.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft B-LXB + B-304J + B-1297 + G-VNEW + JA899A + VN-A898 + 9V-SHS
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

17919.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft B-LXB + VN-A599 + 9V-SHG + 9V-SMJ
CFDS = Centralized Fault Display System
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
EIU = Engine Interface Unit
FADEC = Full Authority Digital Engine Control
FR = Fault Report
NAI = Nacelle Anti-Ice
TPIS = Tire Pressure Indicator System
WN = Warning Number
The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus the Figure of Merit code or data for navigational accuracy

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

The 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

8331.8 kHz Digital data station

8454.8 kHz FUG French Navy Saissac, France
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

6559.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft JA827A + N130FE + N612UP
A NOTAM decoder can be found e.g. here

518.0 kHz SVK Kerkyra Radio, Greece

5195.0 kHz DRA5 Kiel, Germany

3855.0 kHz DDH3 Hamburg Meteo, Germany

11184.0 kHz ACARS/HFDL H03 Reykjavik Air, Iceland, + aircraft A7-AND + HZ-NS33 + JY-AYU + VQ-BHW
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
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

11184.0 kHz ACARS/HFDL H03 Reykjavik Air, Iceland, + aircraft HZ-AQJ + JA18KZ + JY-AYN + VP-BMO + VP-BPX + VP-BQZ
CDL = Configuration Deviation List
CFP = Computerized Flight Plan
DOW = Dry Operating Weight
EPCS = Electrical Power Conversion System
MEL = Minimum Equipment List
OFP = Operational Flight Plan
PIC = Pilot In Command
TOBT = Target Off Block Time
TTOT = Target Take Off Time
WN = Warning Number

8570.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

8570.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil
"18 de Fevereiro" however received 15 FEB 2021 ...
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

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

13315.0 kHz ACARS/HFDL H13 Santa Cruz Air, Bolivia, + aircraft EC-NIG
Parameters ...

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

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

5508.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft C-FRSI

5508.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft C-FRSI + N38950

518.0 kHz UFO Kholmsk Radio SE, Russian Federation

518.0 kHz JGC Yokohama Radio, Japan

518.0 kHz UFL Vladivostok Radio SE, Russian Federation

518.0 kHz Byunsan Radio, South Korea

6418.0 kHz Digital data station, Japan

6559.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft JA14KZ + N613UP + N620UP + N625UP + N819CA + N868FD + 9V-SGG
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint

The 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

13276.0 kHz ACARS/HFDL H04 Riverhead Air NY, United States of America, + aircraft B-1293 + N132FE + N852GT + flight UAL427
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
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 XVS Ho Chi Minh City Radio, Viet Nam

17928.0 kHz ACARS/HFDL H17 Telde Air, Canary Islands, + flight QTR728

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 ...

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

10084.0 kHz ACARS/HFDL H05 Auckland Air, New Zealand, + aircraft B-8685 + B-18902 + P4-KBF + P4-KBM + VN-A597 + flight HVN746
OBAMA is a waypoint near Nagasaki ...
AFS = Auto Flight System
ECU = Electronic Control Unit
EIU = Engine Interface Unit
FADEC = Full Authority Digital Engine Control
FLR = Flight Recorder
FR = Fault Report
HMU = Hydro Mechanical Unit
HPTC = High Pressure Turbine Control

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

17919.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft PK-GMN + PK-GNA + PK-GNU + 9V-SHO + 9V-SMB + flight APJ216

518.0 kHz LFO Oerlandet Radio, Norway

518.0 kHz 9HD Valetta Radio, Malta

518.0 kHz LZW Varna Radio, Bulgaria

2610.2 kHz FUO French Navy Toulon, France

8939.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft B-30CL + B-303E + B-307D + B-2093 + B-8379 + P4-KGD + VN-A668 + VP-BLL + 5Y-CYB
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
FR = Fault Report
ROP = Runway Overrun Protection
ROW = Runway Overrun Warning
TOBT = Target Off Block Time
TTOT = Target Take Off Time
WN = Warning Number

6450.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

4209.5 kHz XSV Tianjin Radio, China

13570.0 kHz HLL5 Soul Meteo, South Korea

4209.5 kHz XSG Shanghai Radio, China

490.0 kHz GCC Cullercoats Radio, United Kingdom

490.0 kHz GNI Niton Radio, United Kingdom

490.0 kHz 9AS Split Radio, Croatia

490.0 kHz ICH Italian Coast Guard La Maddalena Island, Italy

6220.0 kHz IDN Italian Navy Napoli, Italy

518.0 kHz PBK Netherlands Coast Guard Ijmuiden, Netherlands

10555.0 kHz VMW Wiluna Meteo WA, Australia

10555.0 kHz VMW Wiluna Meteo WA, Australia

10555.0 kHz VMW Wiluna Meteo WA, Australia

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

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

518.0 kHz XVT Da Nang Radio, Viet Nam

6973.8 kHz Digital data station

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!!

518.0 kHz EAV Valencia Radio, Spain

518.0 kHz ESA Tallinn Radio, Estonia

518.0 kHz EJK Irish Coast Guard Valentia, Ireland

518.0 kHz 3VL Kelibia Radio, Tunisia

518.0 kHz DDH9 Hamburg Meteo, Germany

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

5100.0 kHz VMC Charleville Meteo QLD, Australia

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

8416.5 kHz UAT Moscow Radio, Russian Federation

518.0 kHz JNX Kushiro Radio, Japan

518.0 kHz JNL Otaru Radio, Japan

518.0 kHz ZBM Hamiltoun Harbour Radio, Bermuda

518.0 kHz EQM Bushire Radio, Iran

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

6661.0 kHz ACARS/HFDL H04 Riverhead Air NY, United States of America, + aircraft C-FRSA + EC-MLT + G-VDOT + N615UP
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

490.0 kHz Taganrog Radio, Russian Federation

518.0 kHz 9WW21 Miri Radio, Sarawak, Malaysia
Warnings still in force - received 031910Z JAN 2021

5508.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft N24973 + flight ACA128

518.0 kHz EQI Abbas Radio, Iran

4215.0 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

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan
Sensaibo = Sailor Disaster Prevention Association ...

518.0 kHz Gislovshammar Radio, Sweden

5502.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft N580UP + N617UP
A NOTAM decoder can be found e.g. here
Code figures for PANC runway 07R braking action - see e.g. here
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

4660.0 kHz ACARS/HFDL H13 Santa Cruz Air, Bolivia, + flight AFR228 + AZU448 + TAM303 + TAM323 + TAM344 + UAL149

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

13315.0 kHz ACARS/HFDL H13 Santa Cruz Air, Bolivia, + aircraft B-1243 + PR-TYK + PR-TYU

13315.0 kHz ACARS/HFDL H13 Santa Cruz Air, Bolivia, + aircraft EC-MXV + PR-TYK + flight SIA802

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

4583.0 kHz DDK2 Hamburg Meteo, Germany

518.0 kHz L2G Argentinian Coast Guard Buenos Aires, Argentina

4209.5 kHz TAH Istanbul Radio, Turkey

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

17916.0 kHz ACARS/HFDL H05 Auckland Air, New Zealand, + aircraft B-18909 + N622UP + N859FD + flight HVN772
ECS = Environmental Control System
LAHSO = Land And Hold Short Operations
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

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

13276.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft N116XA + N470UP + N505DN + N507DN + flight G41548 + UPS85

8948.0 kHz ACARS/HFDL H17 Telde Air, Canary Islands, + aircraft CS-TSG + N283NV + 7O-AFB + flight CES701 + MS0886 + QTR3VK
Flight parameters LPPD - LPPR and OERK - OYAA ...

7880.0 kHz DDK3 Hamburg Meteo, Germany

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

4209.5 kHz XVG Hai Phong Radio, Viet Nam
Warnings still in force - received 241400Z JAN 2021

518.0 kHz XSZ Dalian Radio, China

8927.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft B-2413 + B-8652 + JA890A + N504DN + PK-GFH + VP-BUO + flight CES538 + GA0193
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

8424.0 kHz UDK Murmansk Radio, Russian Federation

8977.0 kHz ACARS/HFDL H03 Reykjavik Air, Iceland, + aircraft A6-EVG + JY-AYN + flight QTR7UN

5508.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft C-FVNB
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
SQL (Structured Query Language) filter allows precise selection
of certain results out of hundreds of decoded messages
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

5508.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft B-308P + B-5961 + B-7881 + JA823A + N643GT + 9V-SMZ
Perfect OOOI ...
AFS = Auto Flight System
DMC = Display Management Computer
EIS = Electronic Instrument System
FMGEC = Flight Management and Guidance and Envelope Computer
FR = Fault Report
IR = Inertial Reference
MMR = Multi-Mode Receiver
WN = Warning Number

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

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

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

13270.0 kHz ACARS/HFDL H06 Hat Yai Air, Thailand, + aircraft B-30FJ + B-305U + B-307D + B-1523 + B-6376 + B-8337 + JA877A + flight CSH931
DA = Departure Airport
DS = Destination Airport
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

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 JNR Moji Radio, Japan

6535.0 kHz ACARS/HFDL H06 Hat Yai Air, Thailand, + aircraft B-6543 + B-6601 + B-8798 + JA15KZ + VN-A508 + VT-ANW
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

5508.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft N601FE + N26925 + flight UPS76 + UPS960
ZFCG = Zero Fuel Centre of Gravity

5755.0 kHz VMW Wiluna Meteo WA, Australia

518.0 kHz Sandakan Radio, Sabah, Malaysia

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

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

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

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

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

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

3622.5 kHz JMH Tokyo Meteo, Japan

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 Izmir Radio, Turkey

518.0 kHz UDN Novorossiysk Radio, Russian Federation

518.0 kHz RFA Astrakhan Radio, Russian Federation

518.0 kHz 4XO Haifa Radio, Israel

4209.5 kHz XVG Hai Phong Radio, Viet Nam

3585.0 kHz HLL8 Soul Meteo, South Korea

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

4583.0 kHz DDK2 Hamburg Meteo, Germany

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

6340.5 kHz NMF United States Coast Guard Boston MA, United States of America
Phasing error by the transmitting station

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

8459.0 kHz NOJ United States Coast Guard Kodiak, Alaska

518.0 kHz Bjuroklubb Radio, Sweden

8459.0 kHz NOJ United States Coast Guard Kodiak, Alaska

490.0 kHz L2T Argentinian Coast Guard Mar del Plata, Argentina

5100.0 kHz VMC Charleville Meteo QLD, Australia
Severe Tropical Storm DANILO ...

7396.7 kHz HSW64 Bangkok Meteo, Thailand

7396.7 kHz HSW64 Bangkok Meteo, Thailand

518.0 kHz VAU Canadian Coast Guard Chebogue NS, Canada

8302.0 kHz XSG Shanghai Radio, China

6661.0 kHz ACARS/HFDL H04 Riverhead Air NY, United States of America, + aircraft HL7617
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
SQL (Structured Query Language) filter allows precise selection
of certain results out of hundreds of decoded messages
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

16963.3 kHz FUF French Navy Fort de France, Martinique

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

490.0 kHz EAR La Coruna Radio, Spain

518.0 kHz XSG Shanghai Radio, China

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

3585.0 kHz HLL8 Soul Meteo, South Korea

8977.0 kHz ACARS/HFDL H03 Reykjavik Air, Iceland, + aircraft D-AXAG + EC-MMY + EC-MSZ + VP-BJY + 5Y-KYD
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 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

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

6535.0 kHz ACARS/HFDL H06 Hat Yai Air, Thailand, + aircraft A7-ANH + B-6137 + HL8083 + HZ-NS26 + N572UP + N610UP + VQ-BBG + flight CSC871
ECS = Environmental Control System
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint

The 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

4209.5 kHz XVN Nha Thrang Radio, Viet Nam

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

4610.0 kHz GYA Royal Navy London, United Kingdom

5514.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft N854FD
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
SQL (Structured Query Language) filter allows precise selection
of certain results out of hundreds of decoded messages
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

490.0 kHz IGS Piombino Radio, Italy

490.0 kHz Antalya Radio, Turkey

518.0 kHz SUZ Serapeum Radio, Egypt

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

9165.0 kHz HLL Soul Meteo, South Korea

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

3585.0 kHz HLL Soul Meteo, South Korea

7748.3 kHz TBB Turkish Navy Ankara, Turkey

2474.0 kHz PBB Dutch Navy Den Helder, Netherlands

19688.0 kHz Digital data station

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

6394.0 kHz Digital data station, Japan

16559.0 kHz XSG Shanghai Radio, China
The next one ... GONI

16559.0 kHz XSG Shanghai Radio, China

16559.0 kHz XSG Shanghai Radio, China

518.0 kHz VOK Canadian Coast Guard Cartwright, NFLD, Canada

11184.0 kHz ACARS/HFDL H03 Reykjavik Air, Iceland, + aircraft B-LID
LDA 4500 metres ...

518.0 kHz SVL Limnos Radio, Greece

518.0 kHz OST Oostende Radio, Belgium

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 5BA Nicosia Radio, Cyprus

518.0 kHz L3B Argentinian Coast Guard Comodoro Rivadavia, Argentina

11086.5 kHz GYA Royal Navy London, United Kingdom

8416.5 kHz VFF Canadian Coast Guard Iqaluit NUN, Canada

8416.5 kHz VFF Canadian Coast Guard Iqaluit NUN, Canada

8459.0 kHz NOJ United States Coast Guard Kodiak, Alaska

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

8885.0 kHz ACARS/HFDL H15 Muhurroq Air, Bahrain, + aircraft VP-BAY + VP-BEW + VQ-BTT

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)

3855.0 kHz DDH3 Hamburg Meteo, Germany

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

8885.0 kHz ACARS/HFDL H15 Muhurroq Air, Bahrain, + aircraft A6-EIY + 5Y-KZH
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

4681.0 kHz ACARS/HFDL H08 Johannesburg Air, South Africa (Republic of), + flight CPA749

10075.0 kHz ACARS/HFDL H15 Muhurroq Air, Bahrain, + aircraft VN-A893
AFDX = Avionics Full-Duplex Switched Ethernet

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

13044.3 kHz FUV French Navy Jibuti, Djibouti

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!