Arcotel MAHRS 2400Bd PSK-8 bursts ALE

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I-56578
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Registrado: 06 May 2015 19:28

Arcotel MAHRS 2400Bd PSK-8 bursts ALE

Mensaje por I-56578 » 22 Jul 2015 09:18

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recording https://www.dropbox.com/s/cnid4m5hjaimq ... E.wav?dl=0

Fast bursts sent every 500 msec, spreading about a 2800 Hz bandwidth. Each burst shows a short preamble of 8 un-modulated carriers, symmetrical with respect to the center frequency of the signal, and a short PSK-2 preamble. The data segment is a serial tone carrier at ~ 1800 Hz with a PSK-8 manipulation at 2400 baud.
The MAHRS protocol, or better the procedure, was described in WUN-10 newsletter [1].
Sometimes you find the MAHRS protocol reported along with the names EADS/RADCOM and Arcotel: the former is the name of the HW producer, TELEFUNKEN Radio Communication Systems - TELEFUNKEN RACOMS [2], while the latter is the name of the modem.
The source should be the German Mil, as reported in the above link to WUN newsletter.

[1] http://www.udxf.nl/WUN-v10.pdf
[2] http://www.army-guide.com/eng/firm3787.html

Saludos cordiales
Última edición por I-56578 el 22 Jul 2015 23:27, editado 1 vez en total.

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Rapidbit
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Re: Arcotel MAHRS 2400Bd PSK-8 bursts ALE

Mensaje por Rapidbit » 22 Jul 2015 19:11

Thank you for your analysis.
Saludos
EA4GPX, EA4022SWL, AMSAT-EA 423.

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