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MFSK-4 (double FSK) 96/100Bd 500Hz, Ukraine Military

December 3, 2015, 1:50 am
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This waveform is known as Double FSK 96/100 Baud and 500 Hz shift, a dual channel mode used by Ukraine Military, spreading about a 1730Hz bandwidth. Thesignal was heard just this morning (03 December) on 6970.9 KHz on USB, tones at -750, -250, +250 and + 750 Hz. Site radioscanner.ru reports this signal as Ukraine Mil 96-100, the two baudrates indication (96 and 100) is due to (literally) "some difficulties  in determining the speed of manipulation, due to the fact that the transmission channels are not synchronized (or poorly synchronized) with each other".
That issue is verified in the 21Aug15 log: the signal exhibits two baudrate lines at 96 and 100 Hz (pic. 3). That uncertainty is anyway not present in the measurement results of the  03Dec15 signal (96Bd) as in the pic. 2. The perfect 500Hz space among the tones (pic. 3) has ben found in the 96Bd signal, while in the other (96/100Bd) the shift is about 505Hz.

Pic. 1 - 03Dec15 signal, single baudrate line (96Hz)
Pic. 2 - 21Aug15 signal, the two baudrate lines
Pic. 303Dec15 signal, perfect 500Hz shift
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Arcotel MAHRS-2400 serial (Telefunken Racoms)

December 6, 2015, 6:35 am
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This signal has been heard several times, this one on 12282.5 KHz on USB at 1430z. An old WUN publication (http://www.udxf.nl/WUN-v10.pdf) and some other logs report the 12282.0 and 12282.4 frequencies as operated by German Military, so probably the 12282.5 frequency is also owned by that same network.
MAHRS-2400 is a STANAG4285-like 2400Bd PSK-8 serial waveform (Pic. 1), although in this record (due to an unrelated signal) the carrier seems to be ~68 Hz lower than the usual 1800 Hz. Unlike STANAG 4285, this signal has a 106.6ms ACF and 2 x 8-tones preamble structure (Pic.2). Both the preamble and modulation technique of this signal are similar to those that are used in the MAHRS ALE mode, a 500ms burst system briefly reported here. This signal islinkable to the HRA 5100 radio communication system used in airborne platforms (hra-5100.html).
As far as is recoverable in the web, "MAHRS"is the name of the HF radio-data standard used for data transmission while "Arcotel"was originally used to indicate the modem:  recentTelefunken Racoms HF transceivers have integrated radio processor and modem, Arcotel is supposed to indicate just the radio processor. The company's name "Telefunken Racoms"  is used since 2004 (http://www.army-guide.com/eng/firm3787.html).

Pic.1

Pic. 2

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Logs

December 8, 2015, 1:37 am
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19305.0 ---: Russian Mil, RUS 1300 USB CIS-45 HDR modem v1 33.3Bd 62.5Hz BPSK (01Dec15) (AAI)
18424.0 ---: Unid 0921 USB MKSK-11 125Bd 250Hz, first tone at: +650Hz ACF 790ms (07Dec15) (AAI)
18255.0 ---: Unid 0915 (cf) BPSK 1200Bd 9-secs segments + 9 tones 150Hz spaced (07Dec15) (AAI)
18100.0 ---: Russian Intel, RUS 1310 USB (cf: +1500Hz) 5 x MFSK-16 10Bd 20Hz + BPSK 250Bd inserts each 10 secs (03Dec15) (AAI)
16898.5 XSG: Shanghai Radio, CHN 0825 CW/ARQ morse id "XSG" (02Dec15) (AAI) 
16083.0 ---: Russian Intel, RUS 0900 USB (cf) CIS FTM-4, MFSK-4 150Bd 4000Hz (tones at: -6, -2, +2, +6 KHz) (07Dec15) (AAI)
15842.0 ---: Unid 0805 USB MIL 188-110 serial PSK-8 2400bps/short (01Dec15) (AAI)
13940.0 ---: Russian Mil, RUS 0745 USB CIS-112 22.22Bd 25.6Hz DBPSK (03Dec15) (AAI)
12693.0 ---: Russian Navy, RUS 1441 USB (cf: +1000Hz) CIS "Akula" BPSK 500Bd + FSK 500Bd/1000 (03Dec15) (AAI)
12282.5 ---: Unid (prob. German AF) 1430 USB Telefunken Racoms MAHRS-2400 serial 2400Bd PSK-8 (05Dec15) (AAI)
12226.0 ---: Unid 0903 USB MIL 188-110 serial 2400bps/voice (07Dec15) (AAI)
12197.0 ---: Unid NATO 1236 ISB LINK-11/SLEW 2400Bd (05Dec15) (AAI)
12173.0 ---: Russian Intel, RUS 0845 USB (cf) CIS FTM-4, MFSK-4 150Bd 4000Hz (tones at: -6, -2, +2, +6 KHz) (07Dec15) (AAI)
10165.0 ---: Unid 0757 USB MIL 188-110 serial 2400bps/voice (07Dec15) (AAI)
12164.0 ---: Unid 1151 USB MFSK-11 125Bd 250Hz, first tone at: +650Hz ACF 790ms (04Dec15) (AAI)
12156.0 ---: Russian Intel, RUS 1420 USB (cf) CIS FTM-4, MFSK-4 150Bd 4000Hz (tones at: -6, -2, +2, +6 KHz) (03Dec15) (AAI)
12153.0 ---: Russian Intel, RUS (cf) MFSK-68 (34+34) + QPSK 2400Bd 10KHz inserts each 1 sec (07Dec15) (AAI)
12120.0 ---: Russian Mil, RUS 0803 USB CIS-3000 serial 3000Bd PSK-8 flwd by CIS-128 OFDM 21Bd QAM-16 (07Dec15) (AAI) 
12113.0 ---: Chinese Mil 1530 LSB OFDM 30-tone bursts BPSK 60Bd (06Dec15) (AAI)
09903.0 ---: Unid (prob. French Mil) 0811 USB Thales Systeme-3000 ALE, QPSK 2000Bd + MSFK-8 125Bd (03Dec15) (AAI)
08812.0 TAH: Istanbul radio, TUR 1006 USB J3E English weather conditions, 0ff 1012 (03Dec15) (AAI)
06970.0 ---: Ukraine Mil, UKR 0650 (cf) MFSK-4 96Bd 500Hz tones at: -750, -250, +250 +750 Hz (03Dec15) (AAI)

[ALE]
16490.0 HIB: Unid net 1321 USB MIL 188-141 2G-ALE calling TOA (01Dec15) (AAI)
16490.0 TOA: Unid net 1320 USB MIL 188-141 2G-ALE sounding (01Dec15) (AAI)
15091.0 CROSPR: USAF Croughton, G 1313 USB MIL 188-141 2G-ALE calling DL0005DAT flwd by 188-110 serial (02Dec15) (AAI)
15091.0 ADW: USAF Andrews, USA 1306 USB MIL 188-141 2G-ALE calling DL0005DAT (USAF AWACS #81-0005) flwd by 188-110 serial (02Dec15) (AAI)
12431.0 AVALLONE: Guardia Di Finanza patrol boat, I 1451 USB MIL 188-141 2G-ALE calling MESSINA (03Dec15) (AAI)
12203.0 CENTR2: MFA Bucuresti, ROU 0840 MIL 188-141 2G-ALE calling YPM25 (07Dec15) (AAI)
12120.0 ---: (no call) prob. Algerian AF, ALG 0828 USB MIL 188-141 2G-ALE calling AOS (prob. Ain Oussera Airport ?)(07Dec15) (AAI)
11226.0 ICZ: USAF Sigonella, I 1510 USB MIL 188-141 2G-ALE multiple stations call "HOW COPY" (06Dec15) (AAI)
08190.0 RHI: Saudi Air Force, ARS  1515 USB MIL 188-141 2G-ALE calling AAI (07Dec15) (AAI)
08162.0 SP01 Algerian Mil, ALG 1523 USB MIL 188-141 2G-ALE calling PY01 (07Dec15) (AAI)
08016.0 NPRD15: NPRD net, HRV 1321 USB MIL 188-141 2G-ALE sounding (05Dec15) (AAI)
08016.0 NPRD001: NPRD net, HRV 0725 USB MIL 188-141 2G-ALE sounding (04Dec15) (AAI)
07421.5 CHFEDR: Greek Air Force, GRC 0733 USB MIL 188-141 2G-ALE calling SFFF2 (04Dec15) (AAI)

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playing with MS-DMT (MIL-STD Data Modem Terminal)

December 12, 2015, 12:32 am
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The MS-DMT application is a software defined modem based communications terminal tool developed as a Microsoft Foundation Class (MFC) based Multi-threaded 32 bit application. It is currently designed to run under MSWindows XP SP3 and later versions of both 32 and 64 bit MS-Windows operating systems. The tool is written in C++ using the Microsoft Visual Studio 2008 compiler and requires the installation of the VS2008 C++ runtime redistribution libraries which are part of the full MS-DMT install distribution only.
The MS-DMT tool functions as both a MIL-STD modem and basic data communications terminal and provides MARS a MIL-STD-188-110A (MS110A) compliant Serial Tone (ST) waveform modem based Message Terminal capability providing message composition and automated message storage to simplify MARS MS110A Forward Error Correction (FEC) message handling.
The software’s terminal provides numerous features to aid in message handling and the software also supports the use of more fully featured external asynchronous terminal applications. Additional features such as Data Link Protocol, Data Compression, Data Encryption and others may be added to the MS-DMT tool as required and in accordance with the specific standards as requested or left to implementation in external terminal applications.
You may use MS-DMT to build, decode and learn the MIL-STD 188-110 ST wavefvorm, the modem, along with other interesting resources and docs, can be downloaded from here:
MIL-STD Data Modem Terminal (MS-DMT) software and resources 





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Logs

December 16, 2015, 2:53 pm
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03831.0 ZLST: Zoll Leitstelle Cuxhaven, D 2158 USB MIL 188-141 2G-ALE calling ZKNI (10Dec15) (AAI)
05155.0 TBB: Turkish Navy, TUR 2115 USB STANAG-4285 600/L CARBs "TBB041--ZES-2/TBB043I(0)/TBB045I(0)/TBB048AI(0)/DZ 036I(0)/TBB050I(0)//" (08Dec15) (AAI)
05200.0 ---: Unid (prob. Algerian Mil) 2105 USB Arabian op.chat + STANAG-4197 (09Dec15) (AAI)
05246.2 ---: Unid (prob. SXV Greek Navy Piraeus, GRC) 2155 STANAG-4285 1200/L crypto (08Dec15) (AAI)
07455.0 RS0016D: prob. Macedonian Mil, MKD 1302 MIL 188-141 2G-ALE handshake with CS004A then into MIL 188-110 serial (10Dec15) (AAI)
07535.0 WG02: Algerian Mil, ALG 0726 USB MIL 188-141 2G-ALE calling PY01 (11Dec15) (AAI)
07622.0 CS002: prob. Macedonian Mil, MKD 1302 MIL 188-141 2G-ALE handshake with RS0011 then into MIL 188-110 serial (10Dec15) (AAI)
08010.0 ---: Ukraine Mil, UK 0647 double FSK 96/100Bd ~500Hz (16Dec15) (AAI)
10156.5 OEY20: Austrian Mil Lebanon, 1230 USB MIL 188-141 2G-ALE calling OEY61, handshake then into MIL 188-110 App.B 39-tone (16Dec15) (AAI)
10251.0 ---: Russian Intel, RUS 0825 (cf) MFSK-68(34+34) + QPSK 2400Bd 10KHz inserts each 1 sec (09Dec15) (AAI)
10370.0 SPI324: Polish Mil, Pol 1507 USB MIL 188-141 2G-ALE calling LCR154 (09Dec15) (AAI)
10435.0 CENTR3: ALG MFA Bucuresti, ROU 0802 USB MIL 188-141 2G-ALE calling FQS (11Dec15) (AAI)
10506.0 ZEN: Algerian AF, ALG 0737 USB MIL 188-141 2G-ALE calling CM2 (09Dec15) (AAI)
11120.0 BSK: Algerian AF, ALG 0847 USB MIL 188-141 2G-ALE calling CM4 (08Dec15) (AAI)
12226.0 ---: Unid 0906 MIL 188-110 serial 2400bps/voice MELP vocoder (11Dec15) (AAI)
12664.5 BE01: Algerian Mil, ALG 0916 USB MIL 188-141 2G-ALE calling LQ01 (12Dec15) (AAI)
12664.5 XV01: Algerian Mil, ALG 0921 USB MIL 188-141 2G-ALE calling BE01 (12Dec15) (AAI)
13499.0 13151: Moroccan Civil Protection, MRC 0802 MIL 188-141 2G-ALE sounding (10Dec15) (AAI)
13856.0 ---: Russian Intel, RUS 0840 USB (cf) CIS FTM-4, MFSK-4 150Bd 4000Hz (tones at: -6, -2, +2, +6 KHz) (14Dec15) (AAI)
13892.0 ---: Russian Intel, RUS 0845 (cf) MFSK-68(34+34) + QPSK 2400Bd 10KHz inserts each 1 sec (15Dec15) (AAI)
15043.0 GUA: USAF Anderson GUM 0741 USB MIL 188-141 2G-ALE sounding (14Dec15) (AAI)
15623.0 ---: Russian Intel, RUS 0845 USB (cf) CIS FTM-4, MFSK-4 150Bd 4000Hz (tones at: -6, -2, +2, +6 KHz) (10Dec15) (AAI)
15626.0 ---: Russian Intel, RUS 0840 USB (cf) CIS FTM-4, MFSK-4 150Bd 4000Hz (tones at: -6, -2, +2, +6 KHz) (15Dec15) (AAI)
15867.0 ---: Russian Diplo, RUS 0934 (cf) SERDOLIK selcall flwd by MFSK-34 40Bd 40Hz (15Dec15) (AAI)
16116.5 OEY61: Austrian Mil Lebanon 0913 USB MIL 188-141 2G-ALE calling OEY20 (10Dec15) (AAI)
16252.5 OEY61: Austrian Mil Lebanon 0912 USB MIL 188-141 2G-ALE calling OEY20 (10Dec15) (AAI)
16283.6 KVX53: Unid US DoS station 0859 USB MIL 188-141 2G-ALE calling KVX50 (10Dec15) (AAI)
16606.0 XKM: DHFCS Forest Moor, G 0909 USB MIL 188-141 2G-ALE calling XSS (08Dec15) (AAI)
17472.0 ---: Russian Diplo, RUS 0826 (cf) SERDOLIK MFSK-34 40Bd 40Hz (14Dec15) (AAI)
19041.5 ---: Unid 1254 USB Hagelin HC-256 voice scrambler (14Dec15) (AAI)

Austrian Mil: 188-141 2G-ALE link setup + 188-110 App.B 39-tone
Hagelin HC-256 HF voice scrambler
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pseudo-random frequency hopping

December 20, 2015, 11:49 am
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Frequency Hopping Spread Spectrum (FHSS) is a method of transmitting radio signals by rapidly switching the carrier among many frequency channels using a pseudo-random sequence known to both transmitter and receiver(s). The heard packets in this sample have a duration of 2520 ms, frequency shift ~ 20 Hz and 20 data bits carried (other similar transmission have been noted with 2460 ms and 24 data bits, same shift) and span up a 2 MHz bandwidth, this recording has been on 13 MHz band.



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CIS OFDM modems logs

December 22, 2015, 7:43 am
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this is not theresult of a systematicmonitoring but just a grouping of my (2015) logs sorted by frequency and waveform; so it doesn't claim to be complete or to provide a sort of schedule for such transmissions. Very poor information about CIS protocols and modems can be found in the web and it is worth noting that in Russia today there is a large replacement of HF equipment and installations: I only know a few links and this is one of these: SDR HF Wireless modem MDM-40K0
About the users... more or less reliable it can be argued that "SERDOLIK" waveforms family is used by the CIS/Russian Diplomatic networks. It should also be understood that a same modem can be used by various agencies, depending on the offered features (such as resistance encryption algorithms and the like): for example, the "old" AT-3004 modem is used by both civilian and military agencies and there are options for the export markets in Latin America and Middle East. Actually, the situation is similar to NATO standards: we log several and same ALE-2G signals but the particular user can be identified only by the callsigns.


notes:
 - CIS-12 AT-3004D (aka MS5, fire) is not considered as an OFDM waveform and so those logs are not reported here. 
- Frequencies are USB, times in UTC.

frequency time note
09070.0 0900 CIS-45 v2
10565.0 0830 CIS-60
11018.2 0635 CIS-128
11032.0 0630,0645 CIS-45 v2
11081.0 1255 CIS-112
12071.0 0635 CIS-45 v2
12143.0 0810 CIS-60
13841.0 1420 CIS-45 v2
13856.0 1245
13858.5 0740 CIS-128 broadband
13940.0 0745 CIS-112
14259.0 0550,0710,0815 CIS-60
14390.0 0645,0820 CIS-112
14390.0 0815 SERDOLIK OFDM 35-tone
14442.0 1220 SERDOLIK OFDM 35-tone
14557.0 0750,0815,0830,1220 CIS-60
14643.0 0830 CIS-112
14750.0 0650 SERDOLIK OFDM 35-tone
14827.0 1230 CIS-45 v1/v2
14974.0 1315 CIS-45 v2
15622.2 1335 CIS-128
15643.0 0725 CIS-45 v2
15680.0 0710 CIS-112
15680.0 0835,1140 CIS-45 v1
15812.0 0705 CIS-45 v1
16103.0 1320,1520 CIS-45 v1
16103.0 1430 CIS-112
16203.0 0930 CIS-45 v1
16230.0 1410 CIS-45 v1/v2
16241.0 1305 CIS-45 v1
16255.0 0825 CIS-128
16341.0 0930 CIS-45 v2
16342.0 1400 CIS-112
16643.0 0835 CIS-112
16810.0 0710 CIS-60
17434.0 1405 CIS-45 v2
17495.0 0645 CIS-112
17540.0 1405 CIS-112
18038.0 1422 CIS-45 v1/v2
18241.0 0720 CIS-60
18553.0 1250 CIS-45 v1
18720.0 1202 CIS-45 v1
19284.0 0830 CIS-128 broadband
19305.0 1300 CIS-45 v1
19400.0 0655 CIS-112
20964.0 0815 CIS-112
 
SERDOLIK OFDM 35-tone DQPSK
frequency time note
14390.0 0815 SERDOLIK OFDM 35-tone
14442.0 1220 SERDOLIK OFDM 35-tone
14750.0 0650 SERDOLIK OFDM 35-tone

CIS-45 HDR modem, OFDM 45-tone (version1 BPSK 33.33Bd 62.5Hz - version2 π/4-DQPSK 40Bd 62.5Hz)
frequency time note
09070.0 0900 CIS-45 v2
11032.0 0630,0645 CIS-45 v2
12071.0 0635 CIS-45 v2
13841.0 1420 CIS-45 v2
14827.0 1230 CIS-45 v1/v2
14974.0 1315 CIS-45 v2
15643.0 0725 CIS-45 v2
15680.0 0835,1140 CIS-45 v1
15812.0 0705 CIS-45 v1
16103.0 1320,1520 CIS-45 v1
16203.0 0930 CIS-45 v1
16230.0 1410 CIS-45 v1/v2
16241.0 1305 CIS-45 v1
16341.0 0930 CIS-45 v2
17434.0 1405 CIS-45 v2
18038.0 1422 CIS-45 v1/v2 
18553.0 1250 CIS-45 v1
18720.0 1202 CIS-45 v1
19305.0 1300 CIS-45 v1

CIS-60 HDR modem, OFDM 60-tone (π/4-DQPSK 30Bd 44.44Hz - π/8-DPSK-8 35.5Bd 44.44Hz)
frequency time note
10565.0 0830 CIS-60
12143.0 0810 CIS-60
14259.0 0550,0710,0815 CIS-60
14557.0 0750,0815,0830,1220 CIS-60
16810.0 0710 CIS-60
18241.0 0720 CIS-60

CIS-112 modem, OFDM 112-tone π/4-DQPSK 22.22Bd 25.6Hz
frequency time note
11081.0 1255 CIS-112
13940.0 0745 CIS-112
14390.0 0645,0820 CIS-112
14643.0 0830 CIS-112
15680.0 0710 CIS-112
16103.0 1430 CIS-112
16342.0 1400 CIS-112
16643.0 0835 CIS-112
17495.0 0645 CIS-112
17540.0 1405 CIS-112
19400.0 0655 CIS-112
20964.0 0815 CIS-112

CIS-128 modem, OFDM 128-tone QAM-16, PSK-8 (broadband waveform span 6KHz band)
frequency time note
11018.2 0635 CIS-128
13856.0 1245
13858.5 0740 CIS-128 broadband
15622.2 1335 CIS-128
16255.0 0825 CIS-128
19284.0 0830 CIS-128 broadband
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something broken, tests,... or holidays mistakes

December 26, 2015, 2:26 am
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since few days, just 2-3 times a day, I a keep an eye on 11598.0 on USB trying to understand what's going ontoa signal that - apparently - should be a normal and peaceful T600 BEE36-50. This FSK synchronous mode, mainly used by the Russian Navy, is very frequent and in many frequencies in HF and is easily recognizable by the messages blocks sent a 50 Baud speed with 200Hz shift, interspersed by reversals.
On 21 december, in the morning, I tuned 11598.0 KHz having seena signaloccupyarather narrow and odd bandwidth. Measuring the signal, it was a regular T600 transmission but modulated with unusual shift, ~78Hz, and offset although its manipulation speed was the right one (pic.1). 
The signalcontinued to betransmittedall the day in thisstrange way, no transmission heard the day after, but again the same behavior on 23 december. On Christmas' Eve everything is backto normal (pic. 2) exhibiting the expected values 50 Baud/200 Hz. A comparisonbetween the two signalsis visible in picture 3. Today morning, 26 December, things lookeven worse: only one keyed tone, the lower, is sent (pic. 4).
The 50Bd/78Hz, although out of rule, could be guessed as a test or as an operational need, but the single - and keyed - tone  suggests a sort of failure of old equipment... or careless mistakes, no one notices? Then, late in the morning again 50Bd/78Hz.
But, it's holiday time after all.

Pic. 1
Pic. 2
Pic. 3
Pic. 4

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about a MIL 188-110 PSK-8 QAM-16-64

December 28, 2015, 3:04 pm
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This signal, heard on 8542.0 KHz/USB  looks like a normal MS 188-110 Serial consisting of a 1800Hz tone, modulated with PSK-8 at rate of 2400 symbols/second... but since the presence of several serial-tone waveforms on the air and the Appendix C and D of MS 188-110B/C, I preferred to give it a closer look just to see which animal it could be.
Looking for its speed I got the expected value of 2400 Baud, but looking for the frequency of the carrier noticed different harmonics patterns that suggested the presence of different modulation techiniques. Then I searched the PSK costellations in all the messages of the transmission getting PSK-8, QAM-16 and QAM-64 (pictures 1,2,3).  
Well, these waveforms are described by the'Appendix C' of MIL 188-110B (and the more recent C) High-rate serial-tone HF waveformsas well as by the'Appendix D' of MIL 188-110C WBHF Block 1 capability, since 188-110A doesn't provide those modulations:later we'll try to determine which of the two we are facing. Anyway, the data-rates provided by the signal are 4800bps (in PSK-8), 6400bps (in QAM-16) and 9600bps (in QAM-64). 
It is worth noting the differences bewteen the harmonics generated by PSK-8 and QAM-64 modes (pic. 4). It's also visible that the typical 188-110 QAM-64 constellation in 'circular rings' is modified with respectto the standard one (pic. 5).It's not so frequent to see QAM-64 in HF, so my thanks to KarapuZ for giving this signal for my analysis.

pic. 1
pic . 2
pic. 3
pic.4
pic.5
Talking with AngazU in order to determine whichsignalis, we passed to study the ACF/frame and the synchronization  preamble.

frame length and ACF
188-110B/C App.C has a fixed 288 symbols lenght frame for all its waveforms (pic. 6) while the 188-110C App.D has different frame structure depending on the bandwidth and the waveform number (pic. 7).
pic. 6 - frame structure for 188-110C App. C
pic. 7 - frame lenghts and structure for 188-110C App. D

Since the bandwidth of the heard signals is within 3 KHz, we have that the two frames differ by only 1 symbol: 287 (Appendix C) and 288 (Appendix D for waveform numbers 7-10). The measuredACF (pic. 8) is ~120ms lenght, then almost 288 symbols, and matches the value reported in the standard in picture 7. This result leads to think to the Appendix D.
 
pic. 8 - 120ms (288 symbols) frame

synchronization preamble
To be sure about it, we should look at the synchronization preambles.
It's worth to note that the synchronisation preambles in both the appendices are always modulated with PSK-8. Appendix C states: "The synchronization preamble shall consist of two parts. The first part shall consist of at least N blocks of 184 8-PSK symbols to be used exclusively for radio and modem AGC. The value of N shall be configurable to range from values of 0 to 7 (for N=0 this first section is not sent at all). The second section shall consist of 287 symbols. The first 184 symbols are intended exclusively for synchronization and Doppler offset removal purposes while the final 103 symbols, which are common with the reinserted preamble, also carry information regarding the data rate and interleaver settings." So, the legth of the App.C sync preamble is the sum of the two sections: (N * 184) + 287 symbols  and since the symbol rate for all symbols is 2400 symbols-per-second, the lenght expressed in milliseconds will be: (N * 76.6) + 119.6 ms
The lenght of the App.D sync preamble is a bit more difficult to calculate, but it's interesting the comparison in picture 9
pic. 9 - sync preamble comparison between a secure App.C and the sygnal under analysis
The upper signal in pic. 9 has a 426ms length preamble and matches the N=4 in the above table while the bottom signal has a shorter preamble and does not fallwithin the rangeof the allowed values. The preambles have PSK-8 modulation and the final sections of preambles and the mini-probes have QPSK modulation.

re-inserted preamble 
The Cross-Correlation Function (CCF) on App.C signal clearly exhibits re-insertions each 72 data-blocks, or 8600ms (pic. 10) while the same function on the signal under analysis doe not exhibit such feature (pic. 11): this is another evidence in favor of App.D

pic. 10
pic. 11

So, reassuming the clues:
- ACF lenght = 120ms, or 288 bit (is 119.42, or 287 bit for App.C)
- synchronization preamble not in range of  App.C possible values
- no preamble re-insertions (App.C needs re-insertion each 72 data-blocks)
most likely the heard signal belongs to 188-110C App.D 3KHz bandwidth. As a confirm I analyzed a QAM-16 decoded bitstream obtained from SA, the bitstream has been previously converted into ASCII binary file using a little tool wrote by me in Lua: in pic. 12 it's easy to see the 32 symbols (128 bits as the modulation is QAM-16) forming the known-data of miniprobes

pic. 12
 
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logs

January 7, 2016, 1:13 pm
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06262.5 BCHB1: Italian Navy (ship?), I 0752 J3E/USB checking msgs sent by IDR, roger your 308,309,310 (22Dec15) (AAI)
06262.5 IDR: Italian Navy Rome, I 0750 USB sending msgs to BCHB1, STANAG-4285 600/L (22Dec15) (AAI)
07421.5 CHFEDR: Greek Air Force, GRC 0733 MIL 188-141 2G-ALE handshake with SFFF2 (21Dec15) (AAI)
08115.0 RK35 ALgerian Mil, ALG 1331 USB MIL 188-141 2G-ALE handshake with PY30 (20Dec15) (AAI)
08171.0 ---: Russian Intel, RUS 1310 CIS FTM-4, MFSK-4 150Bd 4000Hz (tones at: -6, -2, +2, +6 KHz) (17Dec15) (AAI)
09119.0 NPRD001: NPRD net, HRV 1300 USB MIL 188-141 2G-ALE sounding (22Dec15) (AAI)
10307.5 IGNH: Italian Coast Guard, I 1225 J3E/USB requesting radio check to ICI Coast Guard HQ Rome, do you read me? (21Dec15) (AAI)
10838.5 ---: Unid 1311 cf +1500Hz on USB R&S ALIS 228.65Bd/170 called address 69 (21Dec15) (AAI)
11115.0 ---: MFA Cairo, EGY 0645 cf +1700 USB Sitor-A 100Bd/170 selcal TVVF Beirut (29Dec15) (AAI)
11130.0 A2: Moroccan Army, MRC 0855 USB MIL 188-141 2G-ALE calling C3 (28Dec15) (AAI)
11169.0 ---: no call Roumanian Mil, ROU 0812 USB MIL 188-141 2G-ALE calling HFJCDR (28Dec15) (AAI)
11424.0 ---: Russian Navy, RUS 0809 USB AT-3004D modem MPSK-12 120Bd BPSK + CW "QJC 2 K" (29Dec15) (AAI)
11430.0 ---: Russian Mil, RUS 1520 USB long session of 4x3480ms CIS-3000 serial 3000Bd PSK-8 bursts sent each 40 seconds (24Dec15) (AAI)
11525.0 ---: Russian Intel, RUS 0905 USB MFSK-68(34+34) + QPSK 2400Bd 10KHz inserts each 1 sec (28Dec15) (AAI)
11598.0 ---: (11.597,98 KHz) Unid Russian Navy, RUS 0740 F1B 50Bd/78Hz (??) (21Dec15) (AAI)
12165.0 ---: Unid NATO stn 1404 USB LINK-11 Clew (21Dec15) (AAI)
12187.0 761: Unid network 0853 USB MIL 188-141 2G-ALE calling 772 (23Dec15) (AAI)
12226.0 ---: Unid 0902 USB MIL 188-110 serial PSK-8 2400bps/voice QSX 12221.0 (23Dec15) (AAI)
12282.5 ---: Unid (prob.German AF) 0839 USB Telefunken Racoms MAHRS-2400 serial 2400Bd PSK-8 (23Dec15) (AAI)
12394.0 ---: Unid (prob.German AF) 0859 USB Telefunken Racoms MAHRS-2400 serial 2400Bd PSK-8 (23Dec15) (AAI)
12579.0 FH8071: ship 0827 USB PacTOR III wkg OSY "de FH8071 QTC: 4 1666 1296" (23Dec15) (AAI)
12579.0 ---: Unid 1353 cf +1500Hz on USB PACTOR-IV ARQ "Dragon" modem (21Dec15) (AAI)
13890.0 ---: Russian Intel, RUS 0815 USB MFSK-68(34+34) + QPSK 2400Bd 10KHz inserts each 1 sec (22Dec15) (AAI)
15043.0 HAW: USAF Wideawake Ascension Is., ASC 0735 USB MIL 188-141 2G-ALE sounding (28Dec15) (AAI)
16203.0 ---: Russian Mil, RUS 0930 USB CIS-45 HDR modem v1 33.3Bd 62.5Hz BPSK (24Dec15) (AAI)
16255.0 ---: Russian Intel, RUS 0845 USB MFSK-68(34+34) + QPSK 2400Bd 10KHz inserts each 1 sec (22Dec15) (AAI)
16285.0 ---: Russian Mil, RUS 0920 USB CIS-112 OFDM 22.22Bd 25.6Hz BPSK (18Dec15) (AAI)
16288.0 ---: Russian Intel/Diplo, RUS 0859 USB CIS-3000 serial 3000Bd PSK-8 (18Dec15) (AAI)
16683.0 ---: Unid 0945 cf +1500Hz on USB PACTOR-IV ARQ "Dragon" modem (24Dec15) (AAI)
17382.0 ---: Unid Iranian net (prob. navy?) 1503 (cf) Iranian-QPSK 468.75 Baud (23Dec15) (AAI)
17387.0 E22: 0959 AM 1Khz tone, at 1000z female "this is TK8... TK8...TK8", ID rptd 1005z, 1011z carrier off (23Dec15) (AAI)
17387.0 E22: 1059 AM 1Khz tone, at 1100z female "this is EV2... EV2...EV2", 1111z carrier off (23Dec15) (AAI)
17434.0 ---: Russian Intel, RUS 0847 cf CIS FTM-4, MFSK-4 150Bd 4000Hz (tones at: -6, -2, +2, +6 KHz) (22Dec15) (AAI)
17438.5 VA: Unid (prob. Italian Mil) 0855 J3E/USB male in Italian "ZAZ de VA, I'm in QRU" (22Dec15) (AAI)
17469.0 ---: Russian Intel, RUS 1134 USB 4x3480ms CIS-3000 serial 3000Bd PSK-8 bursts flwd by MFSK-68(34+34) + QPSK 2400Bd 10KHz inserts each 1 sec, 60secs lasting (23Dec15) (AAI)
17540.0 ---: Russian Mil, 1405 USB CIS-112 OFDM 22.22Bd 25.6Hz BPSK, burst and stream mode (23Dec15) (AAI)
18667.0 ---: Russian Diplo, RUS 0740 (cf) Serdolik MFSK-34 40Bd 40Hz (CROWD-36) (24Dec15) (AAI)
19126.0 ---: Russian Intel, RUS 0730 USB MFSK-68(34+34) + QPSK 2400Bd 10KHz inserts each 1 sec (23Dec15) (AAI)
19305.0 ---: Russian Mil, RUS 1320 USB CIS-45 v1 OFDM BPSK 33.3Bd 62-5Hz (22Dec15) (AAI)
19670.0 LEB: Unid network 0909 USB MIL 188-141 2G-ALE calling KUL (31Dec15) (AAI)

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unid FSK 1200Bd 850Hz

January 8, 2016, 8:10 am
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10186.0 --- Unid 1340z (cf +1800Hz on USB) strong FSK-2 1200Bd/850, ~1500 Hz bandwidth, heard on 07Jan16: probably GMSK or CPFSK. Since 10186.1 KHz is operated by FUG French Navy with STANAG-4285 1200/L, they could be the same user of the FSK signal (the above f0 could be this one) buts it's just a my guess. Obviously, the two signals were not present at the same time.



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wherever you are

January 11, 2016, 6:43 am
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an RFSM network on 9050.0 KHz (almost surely Bulgarian Diplo)

January 12, 2016, 12:54 am
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I followed these signals on 9050.0 KHz USB mainly in the morning and during the last days, from 0700 to 1100 UTC. Looking at UDXF logs and talking with some friends of mine, the network using 9050.0 Khz is probably Bulgarian or  Romanian Diplo (since some ALE calls such as RETEA, FARAONRETEA, SC1DSRETEA), the QRX is visible on 9055 kHz but sometimes only one frequency may be used. Is not sure if also a similar signal heard on 9040.0 KHz belongs to the same net. My friend Kristian from Germany suggested to be Bulgarian Diplo net and kindly pointed a Monitoring Times issue (May 2011) talking about this mode and Bulgarian Diplo activity:

Transmissions on 9050.0 seem to be scheduled at 0830, 0900 and 0930 UTC Mon-Fri, almost all the sessions start with a ~ 15sec tone at 9051.8 KHz (sent about two minutes before) and they last the time necessaryfor interchanging/sending the messages, usually few minutes.
From previous recordings they used plain MIL-STD 188-110A and now they switched to RFSM (Radio Frequency Software Modem) with Data Masking (link protect) feature, an MS188-110 ST based software-modem by "RFSM-IDE Group". 
Carrier frequency (1800Hz), symbol speed (2400Bd) and modulation (PSK-8)  are the same as that standard (pic. 1) and may be misunderstood and wrongly identified as MS188-110 4800bps/uncoded (the RFSM 75bps/L) and 2400bps/voice(the RFSM 300bps/L), as it happens with both k500 and sorcerer; the 13ms ACF is a clue in favor of RFSM (pic. 2). The structure of the signal is quite complicated, the PSK-8 preamble is followed by the data transfer in PSK-8, QAM-32 or QAM-16 according to needed data-rate. Just as aside note, a sort of 2-ISB signal + carrier has been seen on 9050.0 as central frequency: signal is very week and is difficult to say it's nature.
The RFSM-2400/8000 is a software by "RFSM-IDE Group", it operates under standards MIL 188-110A / MIL 188-110B App. C, (also under a modified version) providing a maximum speed of 8000bps (standard mode), or 6670bps (non-standard "narrow" mode). Signal bandwidth: 0.3-3.3 kHz (standard mode) and 0.3-2.7 kHz (non-standard mode).
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logs

January 14, 2016, 1:24 am
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ALE
08789.4 RJ01: Unid prob. Tunisian Net 1240 USB MIL 188-141 ALE, LQA REQUEST RESPONSE to BF01 (07Jan16) (AAI)
09000.0 523497: Unid (prob. USAF asset) 0906 USB MIL 188-141 ALE sounding (06Jan16) (AAI)
09377.0 VNL: (prob. Slovenian Net,"Triglav-11") 0854 USB MIL 188-141 ALE calling POC (prob. "Pomorski Operativni Center, Ankaran) (04Jan16) (AAI)
11246.0 M72: Israeli Air Force, ISR  Boeing 707 (KC707) Aircraft #272/4X-JYV0735 USB MIL 188-141 ALE sounding (14Jan16) (AAI)
15043.0 233120: Unid (prob USAF asset) 0925 USB MIL 188-141 ALE sounding (12Jan16) (AAI)
15043.0 AKR: Unid (prob RAF Akrotiri CYP) 0748 USB MIL 188-141 ALE calling 280336 (prob USAF asset) (12Jan16) (AAI)
15043.0 AKR: Unid (prob RAF Akrotiri CYP) 0800 USB MIL 188-141 ALE calling 201087 (prob USAF asset) (12Jan16) (AAI)
15740.7 A90: Unid (prob. US CBP net) 0902 USB MIL 188-141 ALE calling F14 (USCG HU-25 ?) same call on 15912.5 at 0905 (12Jan16) (AAI)
16125.0 TU4: Tunisian MOI, TUN 0834 USB MIL 188-141 ALE LQA response to STAT154 (13Jan16) (AAI)

mix
09040.0 ---: Unid (prob. Bulgarian Diplo net) 0744 USB RFSM 75bps/long Link Protect (04Jan16) (AAI)
09050.0 ---: Unid (prob. Bulgarian Diplo net) 0830,0900,0930 USB Mon-Fri, RFSM Link Protect QRX 9055.0 (06Jan16) (AAI)
09065.1 ---: Unid 0750 cf FSK-2 100Bd/500 (11Jan16) (AAI)
09070.0 ---: Russian Mil, RUS 0900 USB CIS-45 OFDM 45-tone 40Bd DQPSK (11Jan16) (AAI)
09281.0 ---: Unid 1005 USB Hagelin HC-256 scrambler (03Jan16) (AAI)
10113.0 STAT154 Tunisian MOI Net, TUN 0750 (cf +1700) USB PacTOR-II "DEFAULT@#HFARQ#STAT154" (08Jan16) (AAI)
10187.8 ---: Unid 1340 cf FSK-2 1200Bd/850 (07Jan16) (AAI)
10237.9 JO62SK: Pirate Beacon 0845 CW "JO62SK 5W DIPOLE JO62SK COMMON AND PRECIOUS" (03Jan16) (AAI)
10543.0 RCV: Russian Navy Sevastopol, UKR 0853 wkg RBE86 "...NAWAREA 3745 KARTE 3233 TUNIS..." (03Jan16) (AAI)
10801.0 ---: Unid (prob Chinese Intel/Diplo net) 1120 (cf) DQPSK 62.5Bd/100 (06Jan16) (AAI)
10853.0 ---: Russian Intel, RUS 0930 (cf +2 KHz on USB) MFSK-68(34+34) (11Jan16) (AAI)
11544.0 ---: Russian Intel, RUS 0805 (cf +2 KHz on USB) MFSK-68(34+34) (14Jan16) (AAI)
12577.5 UAT: Moscow Radio, RUS 0725 (cf +1500 on USB) Sitor-FEC, NAVIP Bulletin, ID in Morse at end "DE UAT" (12Jan16) (AAI)
12875.3 ---: Unid 1250 cf FSK-2 1200Bd/850 (07Jan16) (AAI)
13856.0 ---: Russian Intel, RUS 0840 USB (cf) CIS FTM-4, MFSK-4 150Bd 4000Hz (tones at: -6, -2, +2, +6 KHz) (11Jan16) (AAI)
13932.4 ---: Russian Mil/Gov?, RUS 0725 cf VFT 3x100 100Bd/1440, single channel (14Jan16) (AAI)
14978.0 XPA2: 0822 USB "01968 00001 00000 10140" (11Jan16) (AAI)
15062.0 ---: Unid 0915 USB serial PSK-8 2400Bd modem, carrier 1800Hz ACF 7296 bit (12Jan16) (AAI)
15614.0 ---: Russian Intel, RUS 0820 (cf +2 KHz on USB) MFSK-68(34+34) (12Jan16) (AAI)
15626.0 ---: Russian Intel, RUS 0822 USB (cf) CIS FTM-4, MFSK-4 150Bd 4000Hz (tones at: -6, -2, +2, +6 KHz) lasting 8 seconds. New at 0830 (12Jan16) (AAI)
16194.5 ---: Unid (prob. German Mil) 0819 USB Arcotel MAHRS-2400 ALE bursts flwd by MAHRS-2400 serial (13Jan16) (AAI) 
16230.0 ---: Russian Intel, RUS 0846 USB CIS-3000 PSK-8 3000Bd serial flwd by MFSK-68(34+34) (13Jan16) (AAI)
16332.1 A: Cluster beacon "A" Astrakhan, RUS 0802 CW "A" (13Jan16) (AAI)

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Andy Warhol

January 15, 2016, 4:36 am
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CIS MFSK-68(34+34) variant: such waveforms touch on Art, I wonder what would been Andy Warhol's opinion...

 
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Search

RFSM-8000

January 17, 2016, 1:18 am
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from http://www.marsregionone.org/Temp/rfsm-8000.pdf
"The RFSM-8000 (Radio Frequency Software Modem) is a software by RFSM-IDE Group, it operates under standards MIL 188-110A / MIL 188-110B App. C, (also under a modified version) providing a maximum speed of 8000bps (standard mode), or 6670bps (non-standard "narrow" mode). Signal bandwidth: 0.3-3.3 kHz (standard mode) and 0.3-2.7 kHz (non-standard mode).
Some technical descriptions: 
- real-time signal spectroscope/waterfall view, and IQ-diagram;
- operates under standards MIL-STD 188-110A / MIL-STD 188-110B App. C, (also under a modified version);
- maximum speed: 8000 bps (standard mode), or 6670 bps (non-standard "narrow" mode);
- signal bandwidth: 0.3-3.3 kHz (standard mode) and 0.3-2.7 kHz (non-standard mode).
- uses adaptive correction;
- file transfers are accomplished utilizing ARQ;
- uses SSE2 optimization (if available on CPU);
- transmitter control over COM-port (DTR or RTS line, or CI-V interface);
- allow correction of sound card discretization error;
- allow simple remote control and file-based IPC (for automatic connecting and file transfer)"

I did some tests to check the MS188-110 compatibility and their differences, below are shown the results
- RFSM-8000 modem settings: no DataMasking, standard mode, synchronous
- text sent: "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua."
- decoder used: k500 in both MS188-110A and MS188-110B/App.C synchronous mode


75, 300 bps
2400Bd PSK-8 preamble, headers MS188-110 not compatible
- 75bps: special very robust mode (32-Walsh-based), works under very poor conditions ( -8 dB ), data PSK-8, ACF ~13.6ms (32 symbols)
-300bps: special robust mode - 300bps (16-Walsh-based), works under poor conditions ( -3 dB ), data PSK-8, ACF 13.6ms
About the robust modes the spectrogram shows a sort of inserts with irregular repetition interval, probably due to Walsh modulation, which makes the corrispondent ACF spikes. The 32 tribit symbols, i.e. 96 bits, are clearly visible in the "period" highlighted by BEE (pic. 2b). Standard MS188-110 doesn't exhibit such ACF for the 75bps waveform (pic. 2). 
75bps and 300bps are a sort of proprietary waveforms and need more investigations.

RFSM-modem -> k500
75 long  -> 4800 uncoded (not recognized)
300 long -> 2400 voice (not recognized)

pic. 1
pic. 2
pic. 2b - 96 bits ACF in RFSM-8000 75bps as seen by BEE
600, 1200, 2400 bps
2400Bd PSK-8 preamble
- 600bps: data PSK-8,  ACF = MS188-110A (pic. 3)
- 1200bps: data PSK-8,  ACF = MS188-110A
- 2400bps: data PSK-8,  ACF = MS188-110A
source text is not clearly returned (7 bit shift ?) 

RFSM-modem -> k500 
600 long -> 600 long
1200 long -> 1200 long
2400 long -> 2400 long 
pic. 3 - RFSM-8000 2400bps ACF
3200 bps
2400Bd PSK-8 preamble, headers not MS188-110A compatible
data PSK-8,  ACF = MS188-110A

RFSM-modem -> k500
3200 long -> 75 long(not recognized)

4800, 6400, 8000 bps (MS188-110B/App.C High-Speed WF)
(4800bps only uncoded in MS188-110A, coded in MS188-110B/App.C )
2400Bd PSK-8 preamble

- 4800bps: data PSK-8,  ACF ~119.5ms or 287 symbols frame (pic. 4)
- 6400bps: data QAM-16, ACF ~119.5ms (pic. 5)
- 8000bps: data QAM-32, ACF ~119.5ms (pic. 5)

RFSM-modem -> k500
4800 long -> 4800 long
6400 long -> 6400 long
8000 long -> 8000 long
 
pic. 4 - RFSM-8000 4800bps frame
pic. 5 - RFSM-8000 6400bps, 8000bps

As pointed and tested by AngazU, more likely RFSM chops the info into 59 byte groups and adds its own 6 bytes to build 65 chars chunks for a total of 520 bits frame. The example in pic. 6 is a null file sent by RFSM-8000 at 1200bps: he kindly gave me this file so I could replicate his investigation and get the same results:

pic. 6 - RFSM-8000 data framing (do not mix up with protocol framing)
As you can see in pic. 7, plain MS188-110A doesn't exhibit such beavior since each "period" is just 8 bit length.
pic. 7 -  8 bits period of MA188-110A
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MFSK-68 (34+34) logs

January 20, 2016, 5:37 am
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The waveform consists of a MFSK-68 modulation with a visible empty place in the center of the spectrum, from here the name "34+34": inside these two sets, the tones are 47Hz spaced. Each 1 second are sent 10Khz-wide PSK-8 9000Bd bursts (2 symbol element periods length) possibly acting as sync. Unlike normal MFSK (1 symbol = 1 tone) the signal use 5-tones symbols so that its manipulation speed sums to 47Bd (45 MFSK symbols + 2 PSK symbols). Very often,CIS-3000 PSK-8 bursts have been seen before MFSK-68 transmissions possibly acting as selcall feature, but it's a my guess. MFSK-68 is supposed to be used by Russian Intel/Diplo networks.
This is not theresult of a systematicmonitoring but just a grouping of my logs sorted (and keep updated) by frequency and times; so it doesn't claim to be complete or to provide a sort of schedule for such transmissions. 


frequencies (KHz USB)
10139, 10249, 10321, 10853, 11525, 11544,12146,12161, 12175, 13381, 13838, 13890, 14495, 14631, 14681,14713,15614,15656, 16121, 16230, 16255, 16278, 17469, 17514, 19126   

UTC  freq.
0725 16278.0
0730 19126.0 
0750 10321.0
0755 12146.0

0805 11544.0
0815 13890.0  
0818 14631.0
0820 14713.0 15614.0
0825 10249.0
0830 14495.0 
0837 12146.0
0845 13890.0 16255.0  
0846 16230.0

0905 11525.0   
0921 13381.0, 16121.0
0930 10853.0
0940 12161.0
0944 17514.0
0950 14713.0

1134 17469.0
1250 15656.0
1350 12175.0
1430 14681.0
1420 13838.0
1510 10139.0
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logs

January 21, 2016, 5:10 am
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06450.0 BOVIENZO: Italian GdF patrol boat G106, I 0745 USB MIL 188-141 ALE clg CAGLIARI (15Jan16) (AAI)
06510.0 K1U: prob. Slovak Mil Kuchyňa, SVK 0751 USB MIL 188-141 ALE clg Z1V (15Jan16) (AAI)
06510.0 --- (no call) prob. Slovak Mil, SVK 0809 USB MIL 188-141 ALE clg N1R (15Jan16) (AAI)
06510.0 Z1V: prob. Slovak Mil Zvolen, SVK 0749 USB MIL 188-141 ALE clg P1O (15Jan16) (AAI)
07421.5 CHFEDR: Greek AF, GRC 0734 USB MIL 188-141 ALE clg SFFF2 (20Jan16) (AAI)
07535.0 BX0: Algerian Mil, ALG 0649 USB MIL 188-141 ALE clg BX02 (21Jan16) (AAI)
07890.0 BS008CA: 0740 USB MIL 188-141 ALE clg CS001A (15Jan16) (AAI)
07996.0 SI4: Polish Mil, POL 0803 USB MIL 188-141 ALE clg RA1 QRA1029 (20Jan16) (AAI)
08058.6 KWA37: US Dept of State station 0741 USB MIL 188-141 ALE clg KWT93 (21Jan16) (AAI)
08162.0 IU01: Algerian Mil, ALG 0731 USB MIL 188-141 ALE clg PY01, handshake (21Jan16) (AAI)
08174.0 AC01: Unid (prob Algerian Net) 0920 USB MIL 188-141 ALE clg XV01 (20Jan16) (AAI)
08190.0 NAPOLI: Italian GdF patrol boat, I 0706 USB MIL 188-141 ALE clg BOVIENZO (21Jan16) (AAI)
08193.0 IN6: Polish Mil, POL 0726 USB MIL 188-141 ALE clg TU4 (20Jan16) (AAI)
09181.0 XS50: Algerian Mil, ALG 0829 USB MIL 188-141 ALE clg XS52 (19Jan16) (AAI)
09971.0 LAMBDA0ALE: Polish Mil, POL 1125 USB MIL 188-141 ALE clg STRYJOWALE (19Jan16) (AAI) [*]
09971.0 LAMBDA0ALE: Polish Mil, POL 1136 USB MIL 188-141 ALE clg HERODOT63 (19Jan16) (AAI) [*]
09971.0 LAMBDA: Polish Mil, POL 1107 USB MIL 188-141 ALE clg STRYJOW20 (19Jan16) (AAI) [*]
09971.0 STRYJOWALE: Polish Mil, POL 1125 USB MIL 188-141 ALE clg LAMBDA0ALE (19Jan16) (AAI) [*]
09971.0 STRYJOWALE: Polish Mil, POL 1139 USB MIL 188-141 ALE clg HE3 flwd by MIL 188-110A serial (19Jan16) (AAI) [*]
09980.0 YDM: Unid 0735 USB MIL 188-141 ALE to UR LQA REQUEST RESPONSE (19Jan16) (AAI)
10175.0 325: Unid (prob. Chinese Air Defence, CHN) 1424 USB MIL 188-141 ALE clg 375 (20Jan16) (AAI)
15870.0 BLD: Algerian AF, ALG 1408 USB MIL 188-141 ALE clg BAL (20Jan16) (AAI)
[*] thanks to Kristian: looks like regular exercise every 3rd tuesday of month, as 20.Oct.2015 was also a tuesday

05292.8 "S": Unid beacon 0658 rough CW Morse (21Jan16) (AAI)
07516.0 ---: Russian Intel, RUS 0721 USB (cf) CIS FTM-4, MFSK-4 150Bd 4000Hz (tones at: -6, -2, +2, +6 KHz) lasting 8s (19Jan16) (AAI)
07683.0 ---: Swiss Diplo, SUI 1050 USB (cf +1500 on USB) PacTOR-II (17Jan16) (AAI)
07687.5 ---: Unid 1445 USB Thales Systeme 3000 robust MFSK-8 (20Jan16) (AAI)
07932.5 ---: Turkish Mil, TUR 0744 (cf) FSK 400Hz/600 KG-84 crypto (20Jan16) (AAI)
08701.0 CTA: NATO Lissabon Monsanto, POR 1604 LSB STANAG-4285 600/L "1604Z//CTA02I/CTA08I/CTA12I//" (20Jan16) (AAI)
09050.0 ---: Unid (prob. Bulgarian Diplo Net) 1212 USB RFSM 300bps Robust Mode LP, lasting 4 mins (19Jan16) (AAI)
09151.0 ---: Unid prob.Swiss Diplo, SUI 1207 USB (cf +1500 on USB) PacTOR-II (19Jan16) (AAI)

below the demodulation of one of the PSK-8 segments of the MS188-110C/App.D signal: the 32 symbols mini-probe (96 bits length) are highlighted




↧

Turkish Mil, FSK 600Bd/400Hz KG-84C

January 21, 2016, 1:16 pm
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Althoughthe signalis weak,you could easily find its basic parameters as in pictures 1 and 2. The signal has been heard on 07932.5 KHz (cf) around 0744z and also analyzed here by radioscanner.ru friends.
 
pic.1
pic. 2
This signal use cipher NATO KG-84, it can be identified by a 64-bit sequence in each session . This sequence is always the same: 
1111101111001110101100001011100011011010010001001100101010000001
and can be highlighted in a better sample of this signal as in pic. 3
 
pic.3

The KG-84A and KG-84C are encryption devices developed by the U.S. National Security Agency (NSA) to ensure secure transmission of digital data. The KG-84C is a Dedicated Loop Encryption Device (DLED), and both devices are General-Purpose Telegraph Encryption Equipment (GPTEE). The KG-84A is primarily used for point-to-point encrypted communications via landline, microwave, and satellite systems. The KG-84C is an outgrowth of the U.S. Navy high frequency (HF) communications program and supports these needs. The KG-84A and KG-84C are devices that operate in simplex, half-duplex, or full-duplex modes. The KG-84C contains all of the KG-84 and KG-84A modes, plus a variable update counter, improved HF performance, synchronous out-of-sync detection, asynchronous cipher text, plain text, bypass, and European TELEX protocol. 
Compared to the KG-84A, the KG-84C had some interesting extras. It has a variable update counter,
improved HF performance, out-of-sync detection (when in synchronous mode), asynchronous ciphertext, plaintext bypass, and the European Telex protocol. When used with a suitable digital telephone unit, the KG-84 could also be used for secure voice transmissions. Data could be handled by the KG-84 in asynchronous mode at rates between 50 and 9600 baud. In synchronous mode, it could even go up to 32,000 baud (or even 64,000 baud when used in combination with an external clock). 

↧

interlocking puzzle

January 25, 2016, 5:20 am
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13383.0 KHz (cf), this morning 25 Jan at 0922 UTC: CIS-3000 PSK-8 3000Bd serial flwd by MFSK-68(34+34) + BPSK 10Khz bw,  just "interlocked"  inside a concurrent CIS FTM-4 150Bd 4000Hz (tones at: -6, -2, +2, +6 KHz). No overlapping, unless BPSK bursts.

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