28 September 2014

Logs: 23-27 September

02559.0    BPLEZS:    Bundespolizei Lage Einsatzzentrum  Cuxhaven, D 2139 ALE/USB clg BP23 (25Sep14) (AAI)           
02579.0    IPB:    Bari Radio, I 2105 USB female messages in italian (25Sep14) (AAI)           
04521.0    REA4:    Russian Air Force HQ Moscow, RUS 2040 CW in progress "J96T 7T5T3 JT 1S4 J4T31 = REA4" (25Sep14) (AAI)           
06218.2    NNS:    Nato Allied Joint Force Command Naples, I 2005 STANAG-4285/600L "//NSS2I(0)/NUMS3I(0)/NSS4I(0)/" (25Sep14) (AAI)       
06331.2    IDR:    Navy Rome, I 1935 STANAG-4285/600L "IDR02I(0)/IDR21 /IDR22 /IDR03I(0)" (25Sep14) (AAI)           
06404.0    :    unid 2040 CW in progress (very slow) "G V I N V A R O U N F N 5" (24Sep14) (AAI)           
06917.5    L:    L Beacon St Petersburg, RUS 2037 CW "L" (23Sep14) (AAI)           
08384.0    :    unid ship 1213 Sitor-A/100/170 Calling XYFV (SVO Olympia Radio) (24Sep14) (AAI)           
10423.0    M14:    Enigma M14 1240 CW in progress "H4271 T H993 669M E3 637V Z 63737 H4554" (25Sep14) (AAI)   
11354.0   SU1797: Aeroflot Simferol-Moscow 1410 wkg Barrow LAT 56 24 58  N  LON 56 7 50  E (27Sep14) (AAI)   
12110.0    2017:    Turkish Red Crescent, TUR 1501 ALE/USB sndg (24Sep14) (AAI)           
12110.0    3014:    Turkish Civil defence Adana, TUR 1530 ALE/USB sndg (24Sep14) (AAI)      
12110.0    2016:    Turkish Red Crescent, TUR 1502 ALE/USB sndg (24Sep14) (AAI)           
12115.0    RHI:    Royal Saudi Air Force, ARS 1436 ALE/USB clg AAI (24Sep14) (AAI)           
12115.0    RHP:    Royal Saudi Air Force, ARS 1451 ALE/USB clg AAP (24Sep14) (AAI)           
12220.5    :    unid Italian fishing boats, I 1240 USB/J3E fishermen chat (24Sep14) (AAI)       
12229.0    E11:    Enigma E11 1304 USB/J3E female in progress "..12980 12980 44337 44337 31881..." (24Sep14) (AAI)           
12311.0    MOBE3F:    French AF, F 1215 ALE/USB clg 203E3F (24Sep14) (AAI)           
12415.0    S06s:    Enigma S06s (Russian Lady) 1202 AM/USB female (25Sep14) (AAI)           
12599.5    UAT:    Moscow Radio, RUS 1150 ARQ/Sitor-A traffic (25Sep14) (AAI)           
14376.0 : Russian Mil Duplex 1326 CW "L3ET R 5 2 7 K" (25Sep14) (AAI)

26 September 2014

"NSS" and "IDN" callsigns from Napoli

NSS: belongs to  Allied Joint Force Command (JFC)
IDN: belongs to Italian Navy
...but both the callsigns are operated from Napoli

Allied Joint Force Command (JFC) Napoli (in short JFC Napoli) is a NATO military command based just outside of the town of Lago Patria in the region of Campania (before it was based in Bagnoli, near Napoli). It was activated on 15 March 2004, after what was effectively a redesignation of its predecessor command, Allied Forces Southern Europe (AFSOUTH), originally formed in 1951. Commander JFC Napoli [1] reports to the Supreme Allied Commander Europe at Supreme Headquarters Allied Powers Europe, Casteau, Belgium.
Commander, Allied Joint Force Command Napoli, is responsible for conducting the full range of military operations throughout the NATO Area of Responsibility (AOR) and beyond in order to deter aggression and to contribute to the effective defence of NATO territory and forces, safeguard freedom of the seas and economic lifelines and to preserve or restore the security of NATO nations.

About the callsigns in STANAG-4285

Nato Allied Joint Force Command Napoli broadcasts CARB [2] messages such as:

NSS Joint Force Command CARBs


And sometimes you can also see messages reporting the code legends such as:

C(2-16) CHECK

I asked some UDXF friends about the "NSS" callsign: below their comments.
Thomas M. Rösner answered:

 "US Navy use N-callsign for any of their (in cooperation, here for/by NATO) operated facilities around the world. In these STANAG transmissions, as you can see, they use the (ITU) NSS callsign for this station, which belong to the US Navy  (ex Annapolis MD [3], now "NAK") while before US Navy Naples used to be "NNI". Maybe they moved from US Navy COMMSTA's "NNI" to "NSS" while modified into a USN/NATO station, but I could be wrong."

"I believe the real NSS originates from the Davidsonville, MD complex and is alive and well on a number of frequencies with 50bd and 75bd secure FSK, Link-11 and STANAG4285. Sometimes ITU reports list it as “Washington”. I thought that the NSS CARB was associated with Rome, not Naples? Are they perhaps switching TX sites like a number of other Navies do with their STANAG4285 outlets (UK, Norway, etc)." , Mike Chace-Ortiz (aka mco) say.

So, these transmissions should not be logged (or confused) with similar STANAG transmissions which use the IDN callsign, since "IDN" is the callsign of the "real" domestic Italian Navy station there in Napoli. In fact, CARBs broadcasted by "IDN" report their own proper callsign:


IDR Italian Navy Rome CARBs

Surely, both the two stations are controlled from Napoli, but two different stations/operators and "customers".

NSS CARBs frequencies as reported in 2014 (at present day):
(USB/STANAG-4285/600L/5N1): 06218.2 06934.7

22 September 2014

(lazy) logs: 15-22 September

- M32/RNv
11000.0    unread : Rus Navy 1320 CW in progress "6972 714T4 87393 19T52 = RPT AL RIW K" (19Sep14) (AAI)          
11000.0    RIW   : Rus Navy Moscow, RUS 1335 CW "RGR7Ø DE RIW K" (19Sep14) (AAI)          
11143.0    RBEM  : Russian Navy 1232 CW "RCV DE RBEM QRR K RC5O K QR3 K RBEGR K" (17Sep14) (AAI)
12464.0    RHL80 : Russian Navy Kaliningrad 1150 CW "RCV RCV RCV DE RHL80 RHL80 QSA ? K" (18Sep14) (AAI)          
12464.0    RMRV  : Russian Navy Smolnyi Class Training ship 1251 CW "RIW DE RMRV k" (18Sep14) (AAI)   

12464.0    RHV42 :  Russian Navy Yamal, RUS 1307 CW "RCV DE RHV42 QYT 4 K"  (22Sep14) (AAI)    
12464.0    RJC20 :  Russian Navy, RUS 1255 CW "RCV DE RJC20 QSA ?"
(22Sep14) (AAI)
- unids
04520.0    :    : Israeli Navy , ISR 1955 MIL 188-110A QPSK/Hybrid Modem nd (18Sep14) (AAI)
08072.0    unread    : (probable Chinese military net) 2115 CW in progress "... T 28 T U 2T 6 T1 2T 2T ... 26 998 K" (21Sep14) (AAI)
09202.0    :    : unid NATO TADIL modem 1340 LINK-11/ISB nd (20Sep14) (AAI)          
10119.0    :    : unid (probable Russian modem) 2040 MFSK/16-tones/175Hz spaced nd (16Sep14) (AAI)  
12165.0    :    : unid NATO TADIL modem 1312 LINK-11/SLEW/USB (17Sep14) (AAI)
19056.0    :    : unid Russian Mil, RUS 1525 AT3004D/USB (21Sep14) (AAI)
20268.0    :    : unid Russian Mil, RUS 1548 BEE/50/200 Sync 0x1414bebe64c (21Sep14) (AAI)
22943.0    :    : unid NATO 1215 STANAG-4285/2400L encrypted (17Sep14) (AAI)

- mixed
08216.0    4XZ    : Israeli Navy Haifa, ISR 2125 CW "AR AR VVV DE 4XZ 4XZ" (21Sep14) (AAI)          
08726.0    4XZ    : Israeli Navy Haifa, ISR 1605 CW "VVV DE 4XZ 4XZ" (21Sep14) (AAI)
09083.0    FAV22    : French CSTEI Favieres/Vernon, F 1315 CW in progress "UXAXA SIGTS UMZHQ UAYOD FPGVU..." (21Sep14) (AAI)
12654.0    TAH    : Istanbul Radio, TUR 1237 ARQ/SITOR-A THE QUICKX JUMPS OVER THE... (19Sep14) (AAI)          
20047.7    D    : MX Beacon D Sevastopol, UKR 1207 CW "D" (17Sep14) (AAI)          
20536.0    RDL    : Russian Navy Smolensk, RUS 1557 BEE/50/200 Sync 0x1eb41eb2952 (21Sep14) (AAI) 

RHV42, Yamal - Russian Navy
The Yamal vessel, which has been in service since 1988, is designed for landing operations and the transportation of military personnel and cargo. It’s able to carry up to 250 troops and 10 tanks.

RHL80, Kaliningrad - Russian Navy

The Kaliningrad entered service with the Baltic Fleet in December 1984, and has carried out training missions in the Baltic, North and Mediterranean seas, as well as more than 10 times in the Atlantic Ocean. Kaliningrad class ships are capable of carrying up to 500 tons of cargo, 13 tanks and more than 200 naval infantry.

21 September 2014

ISB (Independent Side Band) transmissions

As said in a previous post about Portoguese Navy [1] , the ISB (Independent Side Band transmission) system uses two SSB channels, which are independed to each other, added to form two side bands around the reduced carrier. So it can simultaneouly convey totally different transmissions.

Two different input signals modulate the same carrier frequency to produce two double-sideband (DSB) waveforms, then two band-pass filters are used to select the upper sideband and the lower sideband in the other.

The selected sidebands are combined to produce a final DSB signal in which each sideband carries different information. 
Since, the number of single-sideband (SSB) channels that can be transmitted over a given communication system is determined by the minimum frequency separation of the channels, using ISB mode, channels can be spaced closer together, and hence a further bandwidth economy can be achieved.

ISB mode is useb by Portuguese Navy in their STANAG-4285 trasmissions to carry encrypted traffic in the upper side band and CARBs messages [2] in the lower side band as in the following example:

Other examples of the use of the ISB and DSB (i.e. the same information on both the two lateral bands) mode can be found tuning some Link-11 [3] transmissions

[1] http://i56578-swl.blogspot.it/2014/08/portuguese-navy-cta-nato-on-hf-stanag.html
[2] http://i56578-swl.blogspot.it/search/label/CARB
[3] http://i56578-swl.blogspot.it/search/label/Link-11 

16 September 2014

Israeli Navy Hybrid HF Modem

This system is used by Israeli Navy, more likely from 4XZ station in Haifa, and it's quite easy to hear. The waveform is composed of  3 parts: a four tones (2 seconds length) preamble, the parallel-data part using QPSK modulation in channels at 75Bd speed and the final serial-data part according to the MIL 188-110 single tone (1800Hz carrier modulated with PSK-8 at 2400Bd). A variant with an added 230ms pre-tone at 1000Hz has been seen.
Since the low data-rate, the apparent ACF is 66.6 ms.

Logs: 10-15 September

Russian Navy
11000.0    RIW    :    Russian Navy HQ Moscow, RUS 1225 CW "RDNK RDNK DE RIW RIW QSA? K" (10Sep14) (AAI)
11155.0    RIT    :    Severomorsk Northen Fleet Rus Navy HQ 1332 CW "RMDV DE RIT QYT4 QMG 1" (15Sep14) (AAI)
11155.0    RHO62    :    Russian Navy Admiral Vladimirskiy 1255 CW "RIT DE RHO62 QSA? QRV K" (15Sep14) (AAI)
11155.0    RIT    :    Severomorsk Northen Fleet Rus Navy HQ 1205 CW "RHO62 RIT RIT" (14Sep14) (AAI)

Russian Mil
14376.0    GTCK    :    Russian Mil 1319 CW "559 26 11 1715 559 = 621= TT46684163 ..." (10Sep14) (AAI)
14376.0    (faint/nread)    :    Russian Mil 1246 CW "OK ZIV ZQT ZKA ZRI ZAE ZON QRR3 K" (10Sep14) (AAI)

08059.0    MV47    :    Algerian Mil, ALG 2140 ALE/USB clg MV40 (12Sep14) (AAI)
09191.0    FAV22    :    CSTEI Favieres/Vernon, F 1951 CW "66 ES Ø9 21:51:5Ø 2Ø14 T PAPLY BRJV" (14Sep14) (AAI)
11337.0    :    :    Israeli Navy, ISR 2040
MIL 188-110A QPSK/Hybrid Modem (ND) (14Sep14) (AAI)
11424.0    441    :    Enigma M12 2130 CW "441 441 441 TTT 441 441 441 TTT 441 441 441 TTT" (13Sep14) (AAI)
11494.0    MEM    :    COTHEN Senatobia,MS 0427 ALE/USB sndg (15Sep14) (AAI)
11494.0    TSC1    :    TSC1 Unid COTHEN station, US 0404 ALE/USB clg TSC (15Sep14) (AAI)
11494.0    SEA    :    COTHEN Clinton,NC 0342 ALE/USB sndg (15Sep14) (AAI)
11494.0    D31    :    USA CBP P-3B Slick #N431SK 0313 ALE/USB sndg (15Sep14) (AAI)
11494.0    SLP    :    unid COTHEN asset, US 0245 ALE/USB sndg (15Sep14) (AAI)
11494.0    OMNI    :    COTHEN Omnidirectional Transmitter Omaha, NE 0239 ALE/USB sndg (15Sep14) (AAI)
11494.0    ATL    :    COTHEN Warm Springs,GA 0233 ALE/USB sndg (15Sep14) (AAI)
11494.0    NLP    :    unid COTHEN asset, US 0226 ALE/USB sndg (15Sep14) (AAI)
11494.0    FTM    :    COTHEN Sarasota, FL 0220 ALE/USB sndg (15Sep14) (AAI)
11494.0    OPB    :    OPBAT Service Center Nassau Bahamas, BAH 0034 ALE/USB clg J18 (15Sep14) (AAI)
12557.0    :    :    unid ship 1428 ARQ/Sitor-A/100/170 selcals MKCV (15Sep14) (AAI)
12745.5    JJC    :    Kyodo Press Agency Tokyo, J 1910 HF FAX 120/576 Kyodo News front page (english text) (10Sep14) (AAI)
12750.0    NMF    :    USCG Boston MA, USA 2125 HF FAX 120/576 surface pressure chart (10Sep14) (AAI)
13270.0    VFG    :    Gander Radio, CAN 2138 USB Aviation Volmet weather conditions (10Sep14) (AAI)

15 September 2014

COTHEN ALE Network (4-hours monitoring)

Last night I parked the FDM-S1/SW2 receiver (an SDR) on 11494.0 KHz/USB, from about 0030z to 0430z, to monitor and catch COTHEN's ALE Network traffic and ALE addresses (11494.0 is one of the frequencies operated by COTHEN Network). 

COTHEN is an HF ALE network that uses landlines to connect nineteen transmission sites spanning the nation in order to form one unified coverage area. Currently, the network has 19 sites, 89 remote communications consoles (RCC’s), and a TSC in Orlando, FL.
More and Ddtailed info about COTHEN network may be retrieved from:

Below, the results from my (latest) 4-hours monitoring:

OPB  0034 ALE/USB clg J18
FTM  0220 ALE/USB sndg
NLP  0226 ALE/USB sndg
ATL  0233 ALE/USB sndg
OMNI 0239 ALE/USB sndg
SLP  0245 ALE/USB sndg
D31  0313 ALE/USB sndg
SEA  0342 ALE/USB sndg
TSC1 0404 ALE/USB clg TSC
MEM  0427 ALE/USB sndg

ALE Call IDs (Remote Communications Transmitters /Base):
- OPB  OPBAT Service Center Nassau Bahamas, BAH
- FTM  Sarasota, FL
- ATL  Warm Springs,GA
- OMNI Omaha, NE
- SEA  Clinton, NC
- MEM  Senatobia, MS

ALE Call IDs (Mobile/Air):
- D31 CBP (Customs and Border Protection) P-3B "Slick" #N431SK/BuNo (voice call "OMAHA 31") @ Jacksonville, AMB
- J18 USCG (United State Coast Guard) MH-60J #6018 @ Coast Guard Air Station (CGAS) Clearwater, FL

unid assets:
- TSC1



14 September 2014

Russian Naval Air Transport / Naval Aviation (M32b/RNAv)

Russian Navy   Russian Naval Air Transport / Naval Aviation   Russian Navy Morse
This short text does not claim to be complete or exact, it is just an attempt to collect and consolidate sparse notes about the Rus Navy way to Morse. I did examined my own logs, browse some Navy and Defense websites, mainly from Russia, N&O columns / Spooks newsletters, public available sources and public sites/forums on the web (later reported). You have to know that this document is always-under-construction and may be outdated, incomplete or even wrong. Comments are welcome.

The Russian Naval Aviation (Aviatsiya Voenno-morskogo Flota Rossii) is the air arm of the Russian Navy, having superseded the Soviet Naval Aviation.
The air forces of the most important fleets, the Northern and Pacific fleets, operate long range Tu-142 anti-submarine warfare aircraft and Il-38 medium-range ASW aircraft. Formations operating supersonic Tu-22M3 bombers were transferred to the Russian Air Force's Long Range Aviation in 2011. The relatively small fleets, the Baltic and Black Sea, currently have only tactical Su-24 bombers and ASW helicopters in service. The small Caspian Flotilla operates An-26 and Mi-8 transports, Ka-27PS rescue helicopters, as well as some Ka-29 and Mi-24 armed helicopters.
On July 15, 2014, a modernised version of the Ilyushin 38N anti-submarine plane was officially delivered to the Russian Navy. 

Naval aviation has a functional division into the following branches: Naval missile-carrying aviation, ASW (anti-submarine warfare) aviation, Attack aviation, Reconnaissance aviation and Auxiliary air units (of airborne early warning defense, electronic warfare, counter mining, guidance and communication support, aircraft fueling in flight, SAR, transport support and ambulance aviation).
Naval Aviation units are based in aerodromes and aircraft cruisers, divided into Shipborne and Shore-based Aviation.

As of 2012, the only fixed wing strike and fighter aircraft of Russian Naval Aviation are the Su-33 fighters and Su-25UTG attack aircraft of the 279th Regiment (forming the Admiral Kuznetsov's carrier air wing), plus the Su-24 bombers based in the Crimea. This sole bomber unit remained part of Naval Aviation as an exception to satisfy treaty requirements governing Russian forces deployments on Ukrainian territory (these must be part of the Black Sea Fleet). Buying brand new multirole Sukhoi Su-30SM for the Black Sea Fleet to replace Su-24 is in the planning stages. 
Naval aviation also retains the anti-submarine aircraft of the forces (the Tu-142 and the Il-38) and the helicopter arm.


4198.5, 8131, 8816, 11354 kHz
Modes: CW + USB (voice)


Below are the approaches I found, callsigns actually are in use. The allocations would make sense, but are absolutely not confirmed. 

RJF94 (tactical PROBOJ)
HQ Naval Air Transport - Moscow

RJC48 (tactical NORKA)    
Naval Air Transport Southern Sector / Black Sea Fleet Naval Aviation
South Crimea region, 7057th Airbase, Gvardeskoye and Kacha

RCB (tactical KRAKET)   
Naval Air Transport Western Sector / Baltic Fleet Naval Aviation
West Kaliningrad region, several airfields possible
Bases in Chkalovsk, Nivenskoye and Bykhov

RJC38 (tactical NOVATOR)    
Naval Air Transport Northern Sector / Northern Fleet Naval Aviation
Murmansk or Sevoromorsk
Bases in Olenia, Arkhangelsk, Severomorsk, Kipelovo

RCH84 (tactical MONOLOG)    
Naval Air Transport Eastern Sector / Pacific Fleet Naval Aviation
Wladivostok Region.  Airfield of Knevichi
Bases in Petropavlovsk, Sovetskaya, Gavan 

NCS station Moscow, has contact with many Navy stations


* aircraft carrying cruiser "Admiral Kuznetsov"
the carrier (the only one of the Russian Navy) should have the callsign RKO81, but it's not absolutely confirmed. 

* Airport 
callsigns were 3-figure-codes in the past, today they give either normal ICAO Uxxx  codes or internal Xxxx codes (Xxxx is the same code as Uxxx).

5 digit callsigns of aircraft correspond to the registration number and can be identified in most cases (only valid for Naval Air Transport fleet)


Simplex contacts with aircraft (5 figure codes) with flight status reports. They mix common ITU-Q-codes (e.g. QRE, QTH, QTR etc) and ICAO-codes (as QAY, QBG, etc) with internal codes (e.g. QQL, QQM).

QTC I have message for you.
QRV I am ready.
QTO I am airborne or I started at ... (hours).
QTR The time is ... (UTC used).
QRD I am bound for ... from ... .
QRE Estimated time of arrival at/over ... (place)is ... (time).
QAH Flight level/altitude is ... (in meters or barometric pressure)
QQL I have passed ... (place) at ... (time).
QBD Fuel endurance is ... (hours and minutes).
QAL  I estimate to land in ... (place) at ... (time).
QQM I will land in ... (place) at ... (time).

Message samples about aircraft (47944) working with Kaliningrad (RCB):

47944 QAY UWMS 1405 K
47944 passed UMWS (= Smorgon) at 1405 hrs

RCB asks to repeat the location

RCB de 47944 QAY UMWS 1405 QAH 5500 QAL XMWS 1500 QBD 0230 K
47944 informs RCB that it passed UMWS at 1405 hrs and further its height (QAH) : 5500 metres its estimated time of arrival (QAL) in Kaliningrad (XMWB) at 1500 hrs and the amount of fuel (QBD) “My fuel endurance is 2 hours and 30 minutes”

Russian Navy   Russian Naval Air Transport / Naval Aviation   Russian Navy Morse

Sources and References:

12 September 2014

short mixed Logs

...Before Christ or Broadcasting?

08072.0    L7HW: Russian Mil 2107 CW "L7HW QTC 33 50 10 0110 33 = QF 83..." 09-Set         
11000.0    RIW: Russian Navy HQ Moscow, RUS 1225 CW "RDNK RDNK DE RIW RIW QSA? K" 10-Set           
11306.0    MU5036: Airbus A321 Bangkok to Chengdu 2025 Arinc-635 wkg Agana Guam 09-Set           
11467.1    :: Russian Navy Kaliningrad, RUS 2056 BEE/50/200 Sync 0x1414bebe952 09-Set           
12745.5    JJC: Kyodo Press Agency Tokyo, J 1910 HF FAX 120/576 Kyodo News front page (english text) 10-Set           
12750.0    NMF: USCG Boston MA, USA 2125 HF FAX 120/576 surface pressure chart 10-Set           
13270.0    VFG: Gander Radio, CAN 2138 USB Aviation Volmet weather conditions 10-Set           
14376.0    :: Russian Mil 1246 CW "OK ZIV ZQT ZKA ZRI ZAE ZON QRR3 K" 10-Set           
14376.0    GTCK: Russian Mil 1319 CW "559 26 11 1715 559 = 621= TT46684163 ..." 10-Set           
14556.0    RIW: Russian Navy HQ Moscow, RUS 1155 CW "RGR7Ø DE RIW K" 09-Set

11 September 2014

JJC/9VF Kyodo Radio FAX

KYODO NEWS FAX reception on 10 September (1910z)

KYODO NEWS, founded in November 1945 as a nonprofit cooperative organization, is the leading news agency in Japan.Kyodo distributes English-language news, known as Kyodo World Services (KWS), to Japanese and transnational media 24 hours a day on a real-time basis. Subscribers include the head offices and Tokyo bureaus of major newspapers, TV-radio stations and electronic news media in Asia, the United States and Europe. They use KWS mainly as a first-hand source of information on Japan and the rest of Asia. KWS is also sent to international organizations and Japanese diplomatic missions throughout the world.

HF-FAX service
Kyodo issues newspapers, both in Japanese and English, that are radio-transmitted twice a day to about 800 ocean-going ships and fishing boats, and hotels in resorts abroad. First published in 1964, the newspapers marked the 30,000th edition in October 2007.
Radio stations JJC in Japan and 9VF in Singapore (not affiliated with the meteorological agency) are directly operated by Kyodo News and they are the last marine weather fax station which faxes daily news and navigational warnings.
JJC and 9VF are listed in the guide written by the National Oceanographic and Atmospheric Administration (NOAA) of the US (available here). Informations are dated March 1, 1999 and provided by Kyodo News April 2001. 
JJC Schedule

9VF/252 Schedule
16035.0 kHz 0740-1010, 1415-1815 F3C 10 KW
17430.0 kHz 0740-1010, 1415-1815 F3C 10 KW

Thought RPM/IOC could be 60/576 or 120/576, according to the contents of transmissions, I have always successfully received their fax setting 120/576.

Official web site (in English) http://www.kyodonews.jp/english/
E-mail: kni@kyodonews.com

10 September 2014


This is a Russian mode also known as CIS MFSK-20 believed to be used by at least one of the Russian intelligence services. It transmits data at either 10 baud (most commonly) or 20 baud using a 17 tone MFSK system. The name CIS MFSK-20 comes from the whole pool of the available frequencies although only 17 of these are used, sumarizing the initial sync part and the message part of an XPA transmission (Pic.1). Measuring the frequency grid inside the message you get a value = 14 (Pic. 2) and it could lead to wrong conclusions about the number of the frequencies used in this system. There are "holes" related to frequencies that are not in use or have special/unknown functions.

Pic.1 the real XPA grid
Pic.2 freq grid inside the body of an XPA transmission
Baudrate can be measured by the scan-raster method (Pic. 3): as you can see, in this recording the baudrate is just 10 Baud.

Pic. 3 frame structure of the XPA waveform

CIS MFSK-20 is reported here in radioscanner.ru

8 September 2014

M32a/RNv Short Log

12464.0 KHz Russian Navy (CW Morse)

RMGB 1206 "RCV DE RMGB.. = ..99396 10256 22252"
(39.6N 25.6E Heading South West @ 6-10 Knots)


RMGB position and heading

RHI99  1232 "RIW DE RHI99 QYT 4 QSA ? K"
RFH71 1305 "RCV DE RFH71 QSA ? K"

RJT22 1403 "RCV DE RJT22 QYT 4 QSX 5736 K"
RFH70 1547 "RCV DE RFH70 K"

RFH70 1555 "RCV DE RFH70 QYT 4 QSA 4" 

RMGB 1258z "RCV DE RMGB QSU 1 QSX 8770 K"
RJT2 1318z "RCV DE RJT2 QSA? K"
RHY47 1420z "RCV DE RHY47 QSA ? K"
RMGB 1426z "RMGB NR 71 RPT 5 25 28 29 K"
RMGB 1428z "RMGB QSL 971 K"

callsign : ship
RHY47 : Yaroslav Mudry, Neustrashimy Class Frigate
RMGB :  Iman, Olekma Class Tanker
RMRV :  Smolny, Training ship

RJT22 : Moskva, Missile Cruiser
RFH70 : Smetlivy, Destroyer

RFH71 : Novocherkassk, Amphibious Landing Ship
RHI99 : Alexander Shabalin, Amphibious Landing Ship

Smetlivy, Destroyer
Moskva, Missile Cruiser

Yaroslav Mudry frigate

2 September 2014

MFSK in pillole

MFSK (Multi Frequency Shift Keying) è una tecnica per trasmissione di dati digitali che usa toni multipli (multitonale) a differenza della tecnica FSK la quale usa due soli toni (bitonale). 
In poche parole, invece di due frequenze come in FSK  se ne usano 4, 8 o 16 (rispettivamente 4-FSK, 8-FSK e 16-FSK) o un numero maggiore, fino a 64 toni. In questo modo ogni simbolo, essendo composto da piu' toni,  trasporta più di 1 bit e la maggiore velocità raggiunta può essere usata a favore della rapidità di trasmissione, oppure per rendere più robusto lo scambio dei messaggi.

Come altri modi di derivazione militare, MFSK e' stato concepito per offrire una una buona immunita' alle cattive situazioni di ricezioni dovute effetti ionosferici, quali l’effetto doppler, il fading e multi-path senza la necessita' di ricorrere a meccanismi di correzione di errore. Ne sono un esempio i sistemi Piccolo e Coquelet  usati nel passato nel passato dal British Foreign Office, dall'Esercito Belga e Francese ed altri.
Il vantaggio maggiore  è che il livello di errore migliora man mano che il numero di toni aumenta, di modo che con un sistema a 32 toni, i risultati sono ineguagliabili.  Di per contro, MFSK utilizza una maggiore larghezza di banda per una determinata velocità di trasmissione nei confronti di FSK o PSK, ma, come visto, e' senz'altro più affidabile.
MFSK usa una spaziatura fra i toni relativamente stretta cosi' che vengono raggiunti buoni indici di dati per una bassa larghezza di banda: classico e' il valore di 64 bps (circa 80 parole al minuto) in una larghezza di banda di soli  316 Hz. Vale la regola  che i toni trasmessi debbono essere spaziati da una separazione equivalente alla velocità di trasmissione in baud, pena la difficile separazione di un tono dall’altro all'atto della decodifica della trasmissione.

Ma come vengono trasmessi questi toni?
Ci sono numerose “famiglie” o tecniche MFSK che usano toni paralleli (ovvero trasmessi simultaneamente), toni sequenziali (ovvero trasmessi singolarmente uno dopo l’altro) e combinazioni di questi. Ad esempio MT-Hell può essere sia parallelo che sequenziale, i toni DTMF usati per la segnalazione telefonica sono toni sequenziali a coppie (un mix dei due modi) cosi' come Piccolo e Coquelet.

Come visto nel caso di AFSK, il trasmettitore non varia la propria frequenza di trasmissione bensi' modula la portante principale con il segnale multitonale MFSK  che e', ovviamente, in banda audio.
In virtu' dei multi toni usati le trasmissioni MFSK sono facilmente riconoscibili dal loro particolare suono, quasi musicale: da qui i nomi  Piccolo (francese per “ottavino”) e Coquelet (gallo). Ugualmente ben riconoscibile e' Olivia (nelle sua varie declinazioni), usato sia nei QSO degli OM che nei radiogrammi trasmessi dalla VOA. Nel caso di Olivia, si e' soliti indicare i vari sistemi con la dicitura Olivia X/Y dove X indica il numero di differenti toni trasmessi e Y la larghezza di banda impiegata.
Oltre ai gia' menzionati MT-Hell, Piccolo, Coquelet e Olivia, sono altresi' sistemi MFSK i vari THROB, DominoEX, MEPT_JT, THOR,.. cosi' come CROWD-36.