Mois : mars 2016

22-28 March – HF logs

2016_03_22-28-1

2016_03_22-28-2.jpg

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South African Navy MHF-50 modem test mode?

Heard a weird modem status on 13536.0 USB – March 10, 2016
4x tone mode, ascending scale (1000Hz > 1525Hz > 2040Hz > 2630Hz approx), repeating again & again…
I’ve made a quick comparison with usual MHF-50 mFSK heard on the freq:

13536_SAN

LEFT: MHF-50 mfsk – RIGHT: the stepping tones mode
each of the 4 tones are fitting fine with some MHF-50 tones, so it’s prob South African navy indeed..

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