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Author Topic: Very strange digital mode on 8.580MHz  (Read 1561 times)

Offline FFZ

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Very strange digital mode on 8.580MHz
« on: March 21, 2014, 0618 UTC »
Caught this tonight on 8.580MHz.  It sounds like the Decepticons from the movie Transformers.  But really, what is this???


Offline Token

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Re: Very strange digital mode on 8.580MHz
« Reply #1 on: March 21, 2014, 1319 UTC »
Saab Grintek MHF-50 modem.  Most often used by the South African Navy (maybe the only regular user of this modem?).  8580 kHz is a common frequency for this signal, and is often paired with 12982 kHz USB.

Mojave Desert, California USA


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