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TETRA and Encryption and decoding (VOCODER)

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#1
Everybody discussing about how to decode/listening to tetra, well, have ANYBODY ever think about something like FDMA and FDCDMA, DCDMA, Pulse frequency modulation (PFM), PFMFDCDMA?

Theese systems is used in TETRA as well as P25!

Why not make resceivers using this systems/protocolls as well as GSM?
 
Joined
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#2
Everybody discussing about how to decode/listening to tetra, well, have ANYBODY ever think about something like FDMA and FDCDMA, DCDMA, Pulse frequency modulation (PFM), PFMFDCDMA?

Theese systems is used in TETRA as well as P25!
Sure about that?
 

v-v

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Nov 25, 2008
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#3
Tetra is not used in Usa, for uniden is not intersting I think.

Most public safety networks in europe are encrypted with strong TEA2.

Belgium uses a clear public safety network. But have never found software for/or scanners for clear Tetra network.
And that know the Belgium government also.


Welcome to Europe where people know nothing anymore.
 
Joined
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#4
some reliable source reported this software is working against unencrypted Tetra
of course you must feed it with the proper bandwidth
PROCITEC GmbH: PROCEED - Modem Detection, Demodulation, Decoding and Signal Analysis
no clue on the pricetag, but I suspect it to be in the usual "medium size car" area as most of its competitors

apparently USRP+GNURadio work as well, but skills needed to operate it are well above the standard hobbyst level
 
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