tetra

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162 discussions

PLU interval?
by Ralph A. Schmid, dk5ras 14 Jan '15

14 Jan '15

Hi, is there a fixed PLU interval for TETRA systems, or is it somewhere announced in the MCCH? I have seen a clear 4 hour interval and wonder who is responsible for it :) Ralph.

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osmotetra old posts
by Jesus Martínez 10 Dec '14

10 Dec '14

Hello, where are the old messages of this list? I'm looking for a 2011 August message talking about a patch for float_to_bits that uses fread instead of read. Best regards. Jesús.

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c implementation of python tetra-demod
by Espectro Digital 04 Dec '14

04 Dec '14

Hello, is there any c/c++ implementation of tetra-demod.py? why only python? Regards. Jack

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tetra decoding
by Jacek Lipkowski 21 Nov '14

21 Nov '14

i've written a small patch to osmocom-tetra to send data via udp (i didn't want to use gsmtap), and a crappy program to display/log/record/listen live the only interesting part for people on this list would probably be crude d-setup, d-release and sds decoding. also the demodulator is stripped from the gui, so that it can receive baseband via a unix pipe from some receiver (gnuradio, but could use rtl_fm probably too). https://github.com/sq5bpf/osmo-tetra-sq5bpf - patched osmocom-tetra https://github.com/sq5bpf/telive - crappy ncurses gui jacek

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decoder/encoding tetra sample
by Amir Jr 18 Apr '14

18 Apr '14

I have download one sample from osmocom speech codec http://tetra.osmocom.org/trac/wiki/Speech_Codec. I have compiled it sucesssfully then the output "ccoder.exe" and "cdecoder.exe" have been built. When i try to run the sample exe file using the command line, it show Segmentation fault (core dumped). This is the how i'm running the sample "./ccoder.exe sample.wav sample2.wav". I'm very confusing about the input and the output file. What is the correct type file for input and the output. Thank you for any respond

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Gnuradio 3.7.# compability?
by janne lukkarinen 01 Apr '14

01 Apr '14

So i decided i lift the cat on the table again and start poking around with some tetra signals. first i had to use dos2unix on the python files (odd i know) once it finally found python i get this Traceback (most recent call last): File "./170913/src/demod/python/fcdp-tetra_demod.py", line 5, in <module> from gnuradio import gr, gru, audio, eng_notation, blks2, optfir ImportError: cannot import name blks2 i poked around some with the code but i ended up causing more damage then i was fixing so i thought i ask if there will be an update anytime soon? if i understood correctly blks2 is moved into 'gr-digital' Janne Lukkarinen OH2-EKO JLxSolutions

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decoded audio channels
by Graham Palmer 29 Mar '14

29 Mar '14

Hi all Doing some work on channel decoded audio frames. any advice on skipping 1st bit (bad frame indicator bit) (channel decoded frame) 1(bfi)+137bits(16bit-samples) to work on last 137 bits of frame 1 & frame 2. Thanks. Graham.

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OsmoDevCon 2014: CFP
by Sylvain Munaut 05 Feb '14

05 Feb '14

Dear all, Time has come to fill out the "Talks/Discussions/Workshop / Hacking" section of the wiki page. If you have something you'd like to present, talk about or hack on, add it there. A simple descriptive title along with an estimated duration is enough. I guess we'll collect those for 2/3 weeks and then start making the schedule. Cheers, Sylvain

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[RFC] [ADMIN] Making lists subscriber-only?
by Harald Welte 15 Jan '14

15 Jan '14

Dear all, so far the osmocom.org mailing lists have always been in a 'non-members are manually moderated' mode. This has created a lot of work for manual list moderation, where a lot of the messages caught are simply spam, and only the occasional valid message is being received. I'd like to thank the list moderators for taking care of this. However, in more recent discussions, we were considering to move the lists to a completely closed mode, i.e. postings would automatically be rejected from non-members. The automatic response would contain a description of how to subscribe in 'nomail' mode, i.e. to subscribe in a way to be able to post to the list, while still not receiving any incoming traffic. The latter should be fine for occasional posters who don't want the bulk e-mail that goes with a full/regular subscription. Please provide feedback in case you disagree with that change. Unless there is major opposition, we will likely transition to the 'closed' mode within one month. Thanks, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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Re: tetra Digest, Vol 35, Issue 2
by Paolo Cavallo 13 Jan '14

13 Jan '14

Il 13/01/2014 12:00, tetra-request(a)lists.osmocom.org ha scritto: > Send tetra mailing list submissions to > tetra(a)lists.osmocom.org > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.osmocom.org/mailman/listinfo/tetra > or, via email, send a message with subject or body 'help' to > tetra-request(a)lists.osmocom.org > > You can reach the person managing the list at > tetra-owner(a)lists.osmocom.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of tetra digest..." > > > Today's Topics: > > 1. [RFC] [ADMIN] Making lists subscriber-only? (Harald Welte) > > > _______________________________________________ > tetra mailing list > tetra(a)lists.osmocom.org > https://lists.osmocom.org/mailman/listinfo/tetra OK I fully agree.

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