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Iranian-QPSK 468.75, 937.5 Baud
Heard on 10724.0 KHz and 17382.2 (cF) on USB at 2120z, this signal is known as "Iranian-QPSK" since its QPSK modulation QPSK.For what is known, the Iranian-QPSK occurs in some variantsthat differ...
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a STANAG-4285 variant
each single "transmission" begins with 4 unmodulated tones that are 700, 500 and 900 Hz spaced (from bottom) and lasting ~ 100ms. The existence of this special preamble could be misleading since...
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BELL 103 compatible FSK modem (Algerian AF)
heard on 11446.2 KHz (cf) at 0756 UTC. FSK bursts preceeded by three unmodulated tones 150 Hz spaced, manipulation speed is 300 symbols/s and shift is 200 Hz. A short 250ms preamble is embedded in the...
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KG-84 evidences
I tried out to look at some signals that use KG-84 hardware crypto equipmentin order to identify its footprint inside them and differences (if any), specifically: the two NATO widely used waveforms...
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HARRIS 'Citadel' cryptographic engine
This is an automatic link setup (ALE) and traffic forward performedthrough the use of MIL-STD standards 188-141A and 188-110A Serial Tone: the calls in the play belongs to Romanian Military, the...
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THALES Skymaster, "skyhopper" mode
This is the Thales Skymaster ALE in Skyhopper mode, heard on 16360.0 KHz/USN at 0814. The signal use very short bursts, in this sample an initial GFSK (GMSK) is followed by MFSK-8 bursts each 200ms...
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ALE06510.0 Z1V: Slovak Mil, SLV 0742 USB MIL 188-141 ALE calling P1O (22Jan16) (AAI)06510.0 Z1V: Slovak Mil, SLV 0747 USB MIL 188-141 ALE calling K1U, handshake flwd by MIL 188-110A serial (22Jan16)...
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CIS Makhovik (the "flywheel") vocoder
Makhovik is classified as "vocoder" butcan be used also for sending encryption of data,it is designed to operate in the UHF but very often is found on the HF as a part of the AT-3004D modem. The...
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CIS FSK 100Bd/2000, Russian AF (in this case)
this signal has been caught on 14555.0 KHz on USB at 0840 UTC and 1240 UTC (the latter from KarapuZ). It's an FSK modulation characterised by 2000 Hz shift and speed of 100 Baud. The user is proved to...
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FSK 100Bd/620, Polish Intel
FSK-2 modulation with 620 Hz shift and 100 Baud speed, in use by Polish Intel service.pic. 1 - baudrate and shiftThe signal exhibits clean ACF spikes at 96 bits (~960ms lenght). Looking morecloselyone...
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MS188-110 scrambler lenght and ACF (another test)
In a previous post I already talked aboutthe way MS188-110 scramblerlengthaffects the valueof theACF and onlyat certain data rate speeds, today I wanted to verify this matter but using a bitstream...
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logs
16553.5 --- Unid (prob. Japanese Mil) 0852 USB 30-tones 70Hz spaced + 1 pilot tone and 4 service tones (?) (16Feb16)18003.0 201073 USAF U-2 80-1073 0838 USB MIL 188-141 ALE sounding (16Feb16)18003.0...
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Unid MFSK 30 parallel tones (plus pilot and services)
About the unid MFSK 30 parallel tones, reported in the previous post, since the frequency 16553.5 KHz/USB is operated by Japanese Military with their 4xFSK-2 system, it could be that this signal has...
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MS188-110C, Appendix C/D scrambler
Both the High Speed Waveforms (HSWF) and Wide Band HF Radio waveforms (WBHF), described in the Appendices "C" and "D"from the standard MS188-110C, use the same scrambler. Modems operating over multiple...
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Ital-HDLC/QUEDRE (High Level Data Link Control)
Looking at the Data Link layer, the many and seemingly boring STANAG-4285 transmissions start to get interesting: the followingis an example about the pair S-4285 and HDLC.The HDLC (High Level Data...
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A real example of e-mail over HF (via FTP) using STANAG-5066 and MS188-110A
in this recording two stations run STANAG-5066 with BFTP protocol client (a File Transfer Protocol) in order to exchange e-mails using the MS188-110A serial waveform. Note that the E-mail delivery does...
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logs
19864.0 ---: Russian Mil, RUS 1400 USB CIS-45 OFDM HDR modem_v2 40Bd BPSK (29Feb16) (AAI)10250.0 GHARB3: GMRA net, LYB 1333 USB MIL 188-141 ALE calling HQ2, cmd "IFBUIFSHSBIBN" flwd by CLOVER-2000...
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examples of Automatic Link Setup & traffic forward
MS188-141A + MS188-110A serialMS188-141A + MS188-110A App.BCODANMS188-141A + R&S GM2100MS188-141A + voice commR&S ALIS + R&S GM2100THALES Skymaster ALE + THALES TRC 177x serial modem
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Unid DQPSK-19200Bd signal: new waveforms tests from Inmarsat-GW ?
Thanks to my friend KarapuZ, I recently had the opportunity to play with some signals heard in HF maritime segments, fixed and mobile services, mainly recordered on 8400 and 12300 KHz/USB. Although...
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Chinese-64: MFSK-64, 37.5Bd 37.5Hz
Since the weak signal, a tip from KarapuZ was decisive to indentify the name of the signal: he sent me his recording of the Chinese-64 modem and it's easy to verify that both the records show the same...
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