We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissible in your locale.

« previous next »
Pages: [1]

Author Topic: Very strange digital mode on 8.580MHz  (Read 1655 times)

Offline FFZ

  • Jr. Member
  • **
  • Posts: 27
    • View Profile
    • Email
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???

http://youtu.be/-c84HBwT2Gw
Logged

Offline Token

  • Global Moderator
  • DX Legend
  • *****
  • Posts: 2121
    • View Profile
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.

T!
Logged
T!
Mojave Desert, California USA
Pages: [1]
« previous next »
 

HFUnderground T-Shirt
HFUnderground T-Shirt
by MitchellTimeDesigns