gmr January 2014

gmr@lists.osmocom.org

9 participants
4 discussions

Receiver Error
by sadi 1 28 Jan '14

28 Jan '14

Hi, I have resolve some of my previous issue and from few days i am stuck on following problem: *********************************** root@sadi:/home/zia/osmo-gmr/utils/gmr_multi_rx# ./gmr_multi_rx --gmr1-dl 978 -a RX2 -S A:0 --addr=usrp2 -T 10 linux; GNU C++ version 4.6.3; Boost_104601; UHD_003.006.002-rc2 Given gmr1-dl ARFCNs: 978 = 1555.562500 MHz Required bandwidth is: 31.250000 kHz Creating the UHD device... -- Opening a USRP2/N-Series device... -- Current recv frame size: 1472 bytes -- Current send frame size: 1472 bytes -- Detecting internal GPSDO.... Found a Jackson Labs GPS -- found -- Detecting internal GPSDO.... Found a Jackson Labs GPS -- found -- Detecting internal GPSDO.... Found a Jackson Labs GPS -- found terminate called after throwing an instance of 'uhd::runtime_error' what(): RuntimeError: fifo ctrl timed out looking for acks Aborted (core dumped) root@sadi:/home/zia/osmo-gmr/utils/gmr_multi_rx# *********************************************************************************************** Going through GMR mailing list I have found that you posted same problem in Oct-2012. I have follow the Mr,Sylvain advice and run uhd_fft utility, that is working fine and showing signal on screen. Can u plz guide me how to resolve this issue. (i am using Ubuntu 12.04 OS). Thanxs Zia

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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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gmr Receive Error
by sadi 1 15 Jan '14

15 Jan '14

Hi all, I am zia. I successfully installed softwares Uhd_003.006.002/GNU Radio 3.6.5.1/Boost 1.43.1 and gmr on Ubuntu 12.04,but when i run signal capturing command I receive no file at output: //*********************************************************************// zia:~/osmo-gmr/utils/gmr_multi_rx$ sudo ./gmr_multi_rx --gmr1-dl 943 -a RX1 -S A:0 -T 10 --add=usrp2 linux; GNU C++ version 4.6.3; Boost_104601; UHD_003.006.002-rc2 Given gmr1-dl ARFCNs: 943 = 1554.468750 MHz Required bandwidth is: 31.250000 kHz Creating the UHD device... zia~/osmo-gmr/utils/gmr_multi_rx$ //*****************************************************************************// (I am running USRP NI 2930) Any help will be highly appreciated. Thanxs Zia

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GMR Standard for Inmarsat
by i040184 Ammar Ikram 01 Jan '14

01 Jan '14

Respected Sir/Madam, Sorry to bother you considering how precious the time is for you professionals but i want some guidance from you. Sir/Madam i want to learn about GMR standard for Inmarsat, its frame structure, channel coding (FEC), ETSI Standard (GMR 1 or GMR 2) etc. Actually i want to learn about how to decode Inmarsat data. Hope to hear good from you soon. Regards, Ammar Ikram Pakistan

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gmr January 2014