20 October 2015

Unid FSK 125Bd/300 (Tadiran HF2000 modem?)

Recordered on 16319.9 KHz (cf) at 1505z on 20 October, just a few seconds transmission then nothing more for over one hour (playback duration). The signals is a clear FSK with manipulation speed of 125 Baud and 300 Hz shift: these parameters are the same of the Tadiran HF2000 125bd FSK Modem (radioreference.com) but I do not have other evidence to confirm this guess so comments are very welcome (by the way, the recording is available).

manipulation speed and shift values

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