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STANAG-4539 in multichannel mode: Thales HF XL modem (likely "SALAMANDRE" tests)
This system has been copied on 9 different simultaneous channels from ~6200 to ~6400 KHz on USB during 9 June morning. The analysis reveals it's a STANAG-4539 modem (frame length is 287 PSK-8 symbols)...
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(not such) logs
06303.0: ---: Unid 1959 USB 3G-HF 2-way FLSU handshake followed by LDL32 transfer(09Jun17) (AAI)06363.2: ---: Unid prob French Navy 0550 USB THALES HF XL modem, likely "SALAMANDRE" tests (09Jun17)...
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unid STANAG-5066 RCOP/UDOP client, Swedish Army "C2" integrator? (tentative)
As said in the previous post, in all the monitored transmissions the chosen 3G-HF service is the Circuit Mode, and 1200 bps MIL 188-110A is the used traffic waveform. Data are transferred by...
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THALES HFXL modem, "SALAMANDRE" tests go on
Likely another "SALAMANDRE" test session for the new Thales HFXL modem spotted this morning on the 7MHz band. This time the modem uses 12 non-contiguous 3 kHz channels from 7505.8 KHz up to 7656.1 KHz...
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the beauty of grayline
188-141A calls copied this morning around 0455 UTC on 11111.0 KHz/USB (Fig. 1). The ALE addresses belongs to the French Navy naval bases at overseas departments and territories Papeete and...
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Logs
08195.0: BU4: Roumenian Police Bucuresti #4, ROU 0624 USB MIL 188-141A handshake 1PY followed by MIL 188-110A (30Jun17) (AAI)07665.0: ---: Unid 0605 USB 3G-HF FLSU 2-way handshake followed by LDL128...
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unid STANAG-5066 RCOP/UDOP client, Swedish Army (update-1)
[ previous post ]A recent copy of S-5066 transmissions exhibits a change of paradigm in the so-termed "wrapper" protocol (depicted in the previous post), more precisely the content length of the header...
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STANAG-4538, optimized Asynchronous FLSU call ?
I copied these 3G-HF transmissions very often and, since the "extended" duration of the first burst, I always thinked to Asynchronous FLSU calls; but, apart from the un-expected ending BW5 burst, a...
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a burst ARQ mixed system (MS110 & S4539)
transmission was spotted only once on 7906.0 KHz from 0603 UTC (tune time) until 0639 (signal off). It's a burst ARQ system in which one station uses STANAG-4539 and the other one uses MIL 188-110A,...
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short bit-analysis of a STANAG-4538 HDLn transfer (BW2 bursts)
Each HDLn transfer consists of n TX Frames (n = 24, 12, 6, or 3) each consisting of n data packets; each data packet consists of 233-byte data segment plus a 17-bit Sequence Number. Each TX Frame is...
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playing with psk-Sounder and Stanag-4285
I used the word "play" because this post does not claim to be a scientific treatment or a in-depth study on propagation mechanisms. HF propagation is not a sort of "deterministic machine" with a...
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Arecibo ionosphere HF campaign, 24-31 July 2017
quoting from Chris Fallen KL3WX "If you are reading this then another radio event of possible interest is the upcoming Arecibo ionosphere HF heating campaign during 24 to 31 July 2017. The new Arecibo...
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unid STANAG-5066 RCOP/UDOP client, Swedish Army (update-2)
<- previousJust a small update to notice that from recent copies it seems that they returned to using 10 bytes for the length of the timestamp element:So far, these are the S5066 Addresses that...
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Logs
05200.0: ---: (no call) 2100 USB voice comms using Hagelin HC-256 scrambler (06Jul17) (AAI)05255.0: R4: Unid 2017 USB MIL 188-141A call R7 (06Jul17) (AAI)05305.0: TC01: Algerian Military, ALG 2045 USB...
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Russian MFSK-17 125Bd/125Hz burst system (selcall waveform?)
Unid MFSK-17 burst system heard on 11090 KHz/USB, modulation speed 125 symbols/sec and separation between tones is 125 Hz (Figs. 1,2)Fig. 1 Fig. 2The waveform-1 seems to have some LMF components and a...
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short bit-analysis of a STANAG-4538 LDLn transfer (BW3 bursts)
Each LDLn transfer consists of a TX Frame consisting of one data packet; A data packet is defined as a fixed-length sequence of n-byte data segment (n = 32,64,96,...,512) followed by a 17-bit Sequence...
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crowd funded experiment for HAARP
https://www.indiegogo.com/projects/amateur-radio-science-experiment-at-haarp This is an amateur's approach to a science experiment. It may not be in a typical fashion one would see from a physics...
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BPOL R&S X.25 packet radio network on HF
Bundespolizei See (here simply termed "BPOL") is the maritime component of the Federal Police and is responsible for the border protection of the German state on the maritime border of the North Sea...
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unid 3-of-6 multitone system (tentative)
Recently I copied an interesting multitone signal on 14642.0 KHz and 16114.0 KHz on USB. The signal uses 6 tones, 400Hz spaced, starting from 650Hz, and it sounds just like a frog. Tranmissions do not...
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Rohde & Schwarz ALIS (RS-ARQ): pool size and frame length
Like in other ALE systems, during an ALIS call [1] the caller station transmits a defined number of "calling" frames so that the called station could have enough time to scan the frequencies of the...
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