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.


5502.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft B-LXF + flight CSC895 + SIA33

518.0 kHz UUI Odessa Radio, Ukraine

518.0 kHz Sellia Marina Radio, Italy

8416.5 kHz NMO United States Coast Guard Honolulu, Hawaii

8416.5 kHz NMO United States Coast Guard Honolulu, Hawaii

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

8416.5 kHz UFZ Vladivostok Radio SE, Russian Federation

4876.8 kHz Digital data station

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

518.0 kHz NOJ United States Coast Guard Kodiak, Alaska

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

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

518.0 kHz XSQ Guangzhou Radio, China

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!
Tak boleh tahan lah!!

6535.0 kHz ACARS/HFDL H06 Hat Yai Air, Thailand, + flight KAL361 + SIA33

10081.0 kHz ACARS/HFDL H07 Shannon Air, Ireland, + aircraft B-5901 + HZ-AQL + VP-BPX + VQ-BDB + VQ-BPW + VQ-BSL + flight CCA573 + SU1731
TOBT = Target Off Block Time
TTOT = Target Take Off Time
WN = Warning Number

5720.0 kHz ACARS/HFDL H03 Reykjavik Air, Iceland, + aircraft F-HTYA + HZ-NS24 + N863FD + PR-TYV + SU-GDD + VQ-BPW + VP-BWH + 5A-WLA
CIDS = Cabin Intercommunication Data System
DAR = Data Access Recorder
DMU = Data Management Unit
FR = Fault Report
IFE = In-Flight Entertainment
PISA = Passenger Interface and Supply Adapter
SR = Seat Row
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
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
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

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 ...

8948.0 kHz ACARS/HFDL H17 Telde Air, Canary Islands, + aircraft P4-KGB + VP-BQE + flight LOT789

518.0 kHz UFL Vladivostok Radio SE, Russian Federation

5195.0 kHz DRA5 Kiel, Germany

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

7880.0 kHz DDK3 Hamburg Meteo, Germany

7880.0 kHz DDK3 Hamburg Meteo, Germany

6565.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft B-30AW + B-6543 + JA928A + flight 9S3628
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

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

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!
Tak boleh tahan lah!!

4209.5 kHz XSQ Guangzhou Radio, China

13324.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft HL7610 + JA13KZ + N24979 + 9V-SMY
Flight parameters RKSI - KLAX ...
POSREP = Time - POS - FL - FOB
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

518.0 kHz XSZ Dalian Radio, China

518.0 kHz XVS Ho Chi Minh City Radio, Viet Nam

11387.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + flight AVA959 + CES233 + FX0049

12666.3 kHz FUM French Navy Papeete, Tahiti, Polynesia (French)

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

8927.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft B-2019 + 9V-SHK + flight CSC854

10084.0 kHz ACARS/HFDL H05 Auckland Air, New Zealand, + flight CES227 + HZ5642

8424.0 kHz UDK Murmansk Radio, Russian Federation

518.0 kHz Parangipettai Radio, India
Transmission delayed 1835 instead of scheduled 1820 UTC ...

5720.0 kHz ACARS/HFDL H03 Reykjavik Air, Iceland, + aircraft B-6080 + F-HRBG + JY-AYX + VP-BQE + flight XA0515
The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
CIDS = Cabin Intercommunication Data System
FR = Fault Report
PISA = Passenger Interface and Supply Adapter
PSU = Passenger Service Unit
SR = Seat Row
VSC = Vacuum System Controller
WN = Warning Number

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

5514.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft B-LJF + JA830A + N506DN + N511DN + 9V-SGG + flight DAL40
APR = Automatic Position Report
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

5514.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft B-LJF
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

4209.5 kHz TAH Istanbul Radio, Turkey

518.0 kHz JNB Naha Radio, Okinawa Island, Japan

8570.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

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

5508.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft N575UP + N878FD + flight QFA755
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

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

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 N856GT + N878FD + flight CXA867
The codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

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

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

13276.0 kHz ACARS/HFDL H04 Riverhead Air NY, United States of America, + aircraft N878FD + flight AMX003 + NW1477

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

518.0 kHz 9MG Georgetown Radio, Pinang Island, Malaysia

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

8948.0 kHz ACARS/HFDL H17 Telde Air, Canary Islands, + aircraft N578UP + 5A-WLA + flight DP0403 + ETH574 + FBU701
CIDS = Cabin Intercommunication Data System
FR = Fault Report
PISA = Passenger Interface and Supply Adapter
SR = Seat Row
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

2610.2 kHz FUO French Navy Toulon, France

6535.0 kHz ACARS/HFDL H06 Hat Yai Air, Thailand, + aircraft B-6043 + B-8693 + flight CPA105 + CSC894

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

5508.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft B-5902 + N560AS + flight SIA37 + UP0355
Technical parameters KLAX - ZSPD ...

5755.0 kHz VMW Wiluna Meteo WA, Australia

5755.0 kHz VMW Wiluna Meteo WA, Australia

5755.0 kHz VMW Wiluna Meteo WA, Australia

518.0 kHz Sandakan Radio, Sabah, Malaysia

4209.5 kHz TAH Istanbul Radio, Turkey

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

2941.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft B-2290 + B-8167 + HL8282 + N573UP + N2997Q + flight CPA208
DCL = Departure Clearance
PDC = Pre-Departure Clearance

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

6619.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft B-9906 + HL8282 + HL8362 + flight ANA758
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

5514.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft B-LJA + B-8858 + HL8362 + VP-BUO + flight CCA195
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

8658.0 kHz JFX Kagoshima Fisheries Radio, Japan

8658.0 kHz JFX Kagoshima Fisheries Radio, Japan

4209.5 kHz XVN Nha Thrang Radio, Viet Nam
Warnings still in force - received 171620Z JAN 2021

8425.5 kHz XSG Shanghai Radio, China

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

10084.0 kHz ACARS/HFDL H05 Auckland Air, New Zealand, + aircraft VP-BWK + flight CES526 + HZ5632

8658.0 kHz JFX Kagoshima Fisheries Radio, Japan

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

17958.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft B-8800 + HL7741 + flight CCA864 + ETD876
HIRO at Asian airports - while e.g. EDDF and EDDM "work" at a mere 20 percent capacity ...

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

6619.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft B-LXJ + B-308T + HL7747 + N614UP + N617UP

3622.5 kHz JMH Tokyo Meteo, Japan

3585.0 kHz HLL8 Soul Meteo, South Korea

518.0 kHz LGT Tjoeme Radio, Norway

6559.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft HL7629 + JA892A + N617UP + N893FD + VP-BSW + flight G40603
The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
ADIRU = Air Data Inertial Reference Unit
ECS = Environmental Control System
FR = Fault Report
WXR = Weather Radar

518.0 kHz UHY Murmansk Radio, Russian Federation

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

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

518.0 kHz 9HD Valetta Radio, Malta

518.0 kHz EJK Irish Coast Guard Valentia, Ireland

6619.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft B-LXB + 9V-SMQ + 9V-SMS + flight ETH637
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
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 XVG Hai Phong Radio, Viet Nam

3585.0 kHz HLL8 Soul Meteo, South Korea

3585.0 kHz HLL8 Soul Meteo, South Korea

6661.0 kHz ACARS/HFDL H04 Riverhead Air NY, United States of America, + aircraft CC-BGL + XA-ADL + flight FDX169 + UAL863

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

12579.0 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

16135.0 kHz KVM70 Honolulu Meteo, Hawaii

16135.0 kHz KVM70 Honolulu Meteo, Hawaii

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

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

518.0 kHz XSI Sanya Radio, China

5583.0 kHz ACARS/HFDL H05 Auckland Air, New Zealand, + aircraft EP-MMQ + flight UAL839 + UPS63
Ex Virgin Atlantic's "Silver Lady" ... coming of age
EEC = Electronic Engine Controller
FR = Fault Report
TACS = Tactical Air Control System

8927.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft JA825P + flight ANA567 + CSZ967
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI
The codes of ACARS Message Labels can be found here

518.0 kHz L3I Argentinian Coast Guard Rio Gallegos, Argentina

518.0 kHz L3O Argentinian Coast Guard Ushuaia, Argentina

8416.5 kHz UAT Moscow Radio, Russian Federation

13324.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft JA837A + N607UP + 5Y-CYB + 9V-SJA
African airport weather via Hawaii ...
Code figures for PANC runways braking action - see e.g. here
The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles each

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

5737.8 kHz Digital data station
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

518.0 kHz A9M Hamala Radio, Bahrain

518.0 kHz EQM Bushire Radio, Iran

11184.0 kHz ACARS/HFDL H03 Reykjavik Air, Iceland, + aircraft P4-KGA + VP-BCA + VP-BQY + VQ-BMV + 5A-WLA + 7O-AFB + flight MS2685
Perfect OOOI ...
AI = Arrival Information
DAR = Data Access Recorder
DEPDLA = Departure Delay
DI = Departure Information
DMU = Data Management Unit
GC = Ground Connections

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

518.0 kHz JNX Kushiro Radio, Japan

4583.0 kHz DDK2 Hamburg Meteo, Germany

4211.7 (!) kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

4211.7 (!) kHz L2C Argentinian Coast Guard Buenos Aires, Argentina
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

6661.0 kHz ACARS/HFDL H04 Riverhead Air NY, United States of America, + aircraft PR-YYK + XA-ADL
L/R engine data ...

518.0 kHz PKX Jakarta Radio, Indonesia

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

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 ...

13324.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft B-1168 + B-7349 + B-8690 + B-18901 + N564AS + N583UP + N613UP + N864FD
CR = Cruise Report PHOG - KSEA ...
ECS = Environmental Control System
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

518.0 kHz Grindavik Radio, Iceland

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

518.0 kHz EJM Irish Coast Guard Malin Head, Ireland

8459.0 kHz NOJ United States Coast Guard Kodiak, Alaska

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

13351.0 kHz ACARS/HFDL H05 Auckland Air, New Zealand, + aircraft B-1063 + N621UP + N643GT + 9V-SHM + 9V-SMC
The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response CPDLC
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
The 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

4272.8 kHz FUJ French Navy Noumea, New Caledonia

490.0 kHz L2G Argentinian Coast Guard Buenos Aires, Argentina

490.0 kHz L2T Argentinian Coast Guard Mar del Plata, Argentina

518.0 kHz ICH Italian Coast Guard La Maddalena Island, Italy

518.0 kHz IQM Mondolfo Radio, Italy

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

6652.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft B-1050 + B-6755 + B-8493 + flight CES545

7396.7 kHz HSW64 Bangkok Meteo, Thailand

3900.0 kHz ACARS/HFDL H03 Reykjavik Air, Iceland, + aircraft N617UP + VP-BKP + VP-BQZ

4209.5 kHz XSV Tianjin Radio, China

6565.0 kHz ACARS/HFDL H02 Hoolehua Air, Molokai, Hawaii, + aircraft B-308C + flight AFR217 + UZB271
ZBAA - KLAX waypoint forecast ...

7396.7 kHz HSW64 Bangkok Meteo, Thailand

518.0 kHz VAU Canadian Coast Guard Chebogue NS, Canada

8302.0 kHz XSG Shanghai Radio, China

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

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

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

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

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

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

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

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

7433.5 kHz HLL5 Soul Meteo, South Korea

5508.0 kHz ACARS/HFDL H01 San Francisco Air CA, United States of America, + aircraft B-6537 + N510DN + N845FD
PFL = Planned Flight Level
PFR = Planned Fuel Remaining
PLND = Planned Time
RDC = Route Data Calculation
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

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

8948.0 kHz ACARS/HFDL H17 Telde Air, Canary Islands, + aircraft CS-TKQ + HZ-NS25 + SU-GCP + VP-BMI + flight FDX8 + KC0873

4209.5 kHz SVH Iraklion Radio, Greece

518.0 kHz PBK Netherlands Coast Guard Ijmuiden, Netherlands

518.0 kHz GPK Portpatrick Radio, United Kingdom

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

8424.0 kHz SVO Olympia Radio, Athens, Greece
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

490.0 kHz CTV Portuguese Navy Lisbon, Portugal

490.0 kHz 9AS Split Radio, Croatia

490.0 kHz EAV Valencia Radio, Spain

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

8589.0 kHz Digital data station, Japan

518.0 kHz XVT Da Nang Radio, Viet Nam

518.0 kHz HSA Bangkok Radio, Thailand

490.0 kHz UON Baku Radio, Azerbaijan

6652.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft B-2762 + VQ-BLQ + flight CCA122 + CES290
L-R engine data ZSFZ - CYVR ...

3622.5 kHz JMH Tokyo Meteo, Japan

3622.5 kHz JMH Tokyo Meteo, Japan

6422.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

8582.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

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

518.0 kHz A9M Hamala Radio, Bahrain
Warnings still in force - received 230010Z DEC 2020
MENAS = Middle East Navigation Aids Service
MEGULITE = Middle East Gulf Lighting Service

3585.0 kHz HLL8 Soul Meteo, South Korea

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

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

518.0 kHz JNL Otaru Radio, Japan

10081.0 kHz ACARS/HFDL H07 Shannon Air, Ireland, + aircraft A7-ANL + B-5941 + CS-TSH + ET-AOQ
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

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

10081.0 kHz ACARS/HFDL H07 Shannon Air, Ireland, + aircraft P4-KDC + UK32020 + VP-BTA + VQ-BEJ + VQ-BTJ + 5A-ONA + 5A-WLA + flight BBC147 + QTR9UL
DAR = Data Access Recorder
DMU = Data Management Unit
ECU = Electronic Control Unit
EIU = Engine Interface Unit
FADEC = Full Authority Digital Engine Control
FDIU = Flight Data Interface Unit
FR = Fault Report
QAR = Quick Access Recording
WN = Warning Number

518.0 kHz ESA Tallinn Radio, Estonia

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

16135.0 kHz KVM70 Honolulu Meteo, Hawaii

16135.0 kHz KVM70 Honolulu Meteo, Hawaii

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

17919.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft B-LJA + B-LNX + B-6013 + B-18917 + PK-GMW + VN-A508 + VN-A511 + flight CES560
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

518.0 kHz JGC Yokohama Radio, Japan

5807.0 kHz ZKLF Auckland Meteo, New Zealand

3247.4 kHz ZKLF Auckland Meteo, New Zealand

7795.0 kHz JMH2 Tokyo Meteo, Japan

7795.0 kHz JMH2 Tokyo Meteo, Japan

7795.0 kHz JMH2 Tokyo Meteo, Japan

7795.0 kHz JMH2 Tokyo Meteo, Japan

4610.0 kHz GYA Royal Navy London, United Kingdom

6652.0 kHz ACARS/HFDL H16 Barrigada Air, Guam, + aircraft B-LXE + B-30E0 + B-2413 + B-8571 + N882FD + OE-IFM + flight CSC804
ECS = Environmental Control 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

490.0 kHz Taganrog Radio, Russian Federation

4209.5 kHz XSG Shanghai Radio, China

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 GNI Niton Radio, United Kingdom

490.0 kHz Antalya Radio, Turkey

518.0 kHz SUZ Serapeum Radio, Egypt

4209.5 kHz XVN Nha Thrang Radio, Viet Nam

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

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

518.0 kHz Arkhangelsk Radio, Russian Federation

518.0 kHz Grimeton Radio, Sweden

5100.0 kHz VMC Charleville Meteo QLD, Australia

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

6619.0 kHz ACARS/HFDL H10 Muan Air, South Korea, + aircraft EP-MMI + RPC8398 + flight CCA632
CIDS = Cabin Intercommunication Data System
DOI = Dry Operating Index
Loadsheet CGY - DGT
Howgoesit RPLL - RPMY

5067.8 kHz Digital data station

3855.0 kHz DDH3 Hamburg Meteo, Germany

518.0 kHz OXJ Torshavn Radio, Faroe Islands, Denmark

9165.0 kHz HLL Soul Meteo, South Korea

518.0 kHz DDH9 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

518.0 kHz LFO Oerlandet Radio, Norway

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

10081.0 kHz ACARS/HFDL H07 Shannon Air, Ireland, + aircraft PR-YYL
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

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 UFO Kholmsk Radio SE, Russian Federation

518.0 kHz Byunsan Radio, South Korea

518.0 kHz VOK Canadian Coast Guard Cartwright, NFLD, Canada

7795.0 kHz JMH2 Tokyo Meteo, Japan

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

8582.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

518.0 kHz 3VL Kelibia Radio, Tunisia

518.0 kHz Gislovshammar Radio, Sweden

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

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

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)

518.0 kHz LZW Varna Radio, Bulgaria

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

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

10100.8 kHz DDK9 Hamburg Meteo, Germany
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

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

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan
Tak boleh tahan lah!

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

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

6589.0 kHz ACARS/HFDL H11 Panama City Air, Panama

8416.5 kHz SUZ Serapeum Radio, Egypt

10081.0 kHz ACARS/HFDL H07 Shannon Air, Ireland, + flight QTR898

17003.2 kHz CTA North Atlantic Treaty Organization Lisbon, Portugal

518.0 kHz SVK Kerkyra Radio, Greece

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

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

518.0 kHz GCC Cullercoats Radio, United Kingdom

8454.0 kHz UIW Kaliningrad Radio, Russian Federation

8454.0 kHz UIW Kaliningrad Radio, Russian Federation
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

10543.0 kHz RCV Commonwealth of Independent States Navy Sevastopol', Ukraine
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

518.0 kHz L2N Argentinian Coast Guard Bahia Blanca, Argentina

10093.0 kHz ACARS/HFDL H09 Barrow Air, Alaska, + aircraft B-LJD
Parameters ...
ECS = Environmental Control System

518.0 kHz Muttam Point Radio, India

10093.0 kHz ACARS/HFDL H09 Barrow Air, Alaska, + aircraft VP-BLH + VP-BKQ + VQ-BMX

518.0 kHz DZX Manila Radio, Philippines

16067.7 kHz Ministry of Foreign Affairs Cairo, Egypt

8957.0 kHz ACARS/HFDL H13 Santa Cruz Air, Bolivia, + aircraft JA882A + PR-YYC
Perfect OOOI ...

8957.0 kHz ACARS/HFDL H13 Santa Cruz Air, Bolivia, + aircraft PR-YYH
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

518.0 kHz EQI Abbas Radio, Iran

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

518.0 kHz Vakalpudi Radio, India

7550.0 kHz All India Radio's DRM transmission
decoded with the new Kiwi-SDR extension feature

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

8319.0 kHz 4XZ Israeli Navy Haifa, Israel

3965.0 kHz Radio France International's DRM transmission
decoded with the new Kiwi-SDR extension feature
Among several nearby digital data signals, the sonagram shows
the CW exercise of the French Army at Mont-Valerien on 3881 kHz,
the HFDL aggregate of Reykjavik Air, Iceland, on 3900 kHz,
and a 50 Baud FSK emission on 4020 kHz

11318.0 kHz ACARS/HFDL H13 Santa Cruz Air, Bolivia, + flight SIA921

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

8957.0 kHz ACARS/HFDL H13 Santa Cruz Air, Bolivia, + aircraft JA04VA + N968AV + RPC8782 + VQ-BRH
A NOTAM decoder can be found e.g. here
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

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
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

2815.0 kHz MKL Royal Air Force London, United Kingdom
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

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 20,000 (twenty thousand!) fascinating screenshots are available on our unique Digital Data Decoder Screenshots USB Stick!