tetra May 2012

tetra@lists.osmocom.org

4 participants
3 discussions

TETRA test samples
by Dieter Spaar 02 Feb '13

02 Feb '13

Hello, there is now a test sample (bit file) with speech at http://tetra.osmocom.org/trac/wiki/Test_Samples Please only add samples to this page if you have the full agreement for publishing from all involved parties (e.g. operator of the network, people speaking during the capture). This is not the place to share captures which were made from someone else without their knowledge. Best regards, Dieter -- Dieter Spaar, Germany spaar(a)mirider.augusta.de

2 2

USRP more than one channel demod
by Martin de Wendt 05 Jun '12

05 Jun '12

Hello. Has anyone an idea how to demodulate more than one channel per time while using an USRP or FCD? The provided bandwidth is big enough. But how the split the 25kHz channels into seperate streams? Any idea is welcome. Thx Martin

4 5

issues with GNURadio 3.6.1 ?
by sinager＠tarapippo.net 05 May '12

05 May '12

Hi, are you aware of problems with that? >>> gr_fir_ccc: using 3DNow!Extsample rate: 1024000Using Volk machine: sse3_32>>> gr_fir_ccf: using 3DNow!Traceback (most recent call last): File "./src/demod/python/tetra-demod.py", line 67, in <module> my_top_block().run() File "./src/demod/python/tetra-demod.py", line 54, in __init__ verbose=options.verbose) File "/home/sinager/osmo-tetra/src/demod/python/cqpsk.py", line 266, in __init__ self.receiver=gr.mpsk_receiver_cc(arity, pi/4.0,AttributeError: 'module' object has no attribute 'mpsk_receiver_cc' Works fine with 3.6.0 on myu netbook so I'm not sure if it's a release issue or I simply have something screwed on the main pc.Cheers S

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tetra May 2012