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[Discuss-gnuradio] Cross band relais / bridge - DMR?

From: Stefan Gofferje
Subject: [Discuss-gnuradio] Cross band relais / bridge - DMR?
Date: Thu, 28 Apr 2011 21:37:13 +0300
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would any of the USRPs together with gnuradio be suitable to serve as a
configurable cross band relais?
I sometimes have applications where we have to communicate which huge
amounts of radio systems which are not ours, which means that we either
have to give out a whole bunch of radios from us (and we don't have so
many) or work with the radios of the other party (which is not always
A very nice thing would be a cross band relais which would transmit
whatever is received from one of the channels on the other channel.
Simplex would absolutely suffice.

I have been working my way through grc but I am not absolutely clear how
to realize the squelch/PTT logic. Of course, I don't want the box to
xmit continuously but only if an actual signal is received. There also
has to be some lockout-logic, so the relaying only goes in one direction
at a time. Otherwise, we would have a nasty feedback :).

The creamtip would be if gnuradio would speak ETSI DMR but I also didn't
find too much about that yet...
We plan to change to DMR somewhat soon but most partners/customers still
use analog radios...

Any hints?

- -S

- -- 
 (o_   Stefan Gofferje            | SCLT, MCP, CCSA
 //\   Reg'd Linux User #247167   | VCP #2263
 V_/_  Heckler & Koch - the original point and click interface
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