osmocom-sdr

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906 discussions

getting started
by Richard Bown 04 Mar '14

04 Mar '14

Hi, I've followed the steps in http://sdr.osmocom.org/trac/wiki/rtl-sdr All built OK, I opened up GRC clicked on RTLSDR in sources, but all I get is something flashing up on screen, looks like a block of text on a yellow background, but it seen to be flashing and scrolling and near impossible for me to read. rtl_test -t shows Found 1 device(s): 0: Realtek, RTL2838UHIDIR, SN: 00000001 Using device 0: Generic RTL2832U OEM Found Rafael Micro R820T tuner Supported gain values (29): 0.0 0.9 1.4 2.7 3.7 7.7 8.7 12.5 14.4 15.7 16.6 19.7 20.7 22.9 25.4 28.0 29.7 32.8 33.8 36.4 37.2 38.6 40.2 42.1 43.4 43.9 44.5 48.0 49.6 Sampling at 2048000 S/s. No E4000 tuner found, aborting. What do I need to do now to get a working srd display, ie spectrum and waterfall display, or point me in the direction of the idiot guide please TIA -- -- Best wishes /73 Richard Bown Email : richard(a)g8jvm.com HTTP : http://www.g8jvm.com nil carborundum a illegitemis ################################################################################## Ham Call G8JVM . OS Linux Mint 16 x86_64 on a Dell Inspiron N5030 laptop Maidenhead QRA: IO82SP38, LAT. 52 39.720' N LONG. 2 28.171 W QRV VHF 6mtrs 200W, 4 mtrs 150W, 2mtrs 400W, 70cms 200W Microwave 23 cms 140W, 13 cms 100W, 6 cms 0W & 3cms 5W ##################################################################################

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Retrieving device type
by Nick Foster 04 Mar '14

04 Mar '14

Hi, gr-osmosdr is great at abstracting the device type, but now I find myself wishing to de-abstract. For instance: HackRF has large DC offset, so I'd like the option to switch in a DC blocking filter when using that source. RTL dongles can't support more than 2.4Msps reliably, so I'd like to be able to cope accordingly at initialization time. Is there a good way to retrieve, say, a string descriptor telling me which particular source I'm using? --n

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SDRIO: A hardware abstraction layer for SDR devices
by Scott Cutler 02 Mar '14

02 Mar '14

Some of you may have seen this already when I was asking licensing questions, but others may still be curious. In the course of other development efforts, I had a need for an abstraction layer that had more features than ExtIO. In particular, I wanted transmit support (for my bladeRF), as well as better control over gain and other settings. What I have come up with is SDRIO: a straightforward C interface for interacting with SDR devices. I currently support rtl-sdr, bladeRF, and the Funcube Dongle. Each driver lives in its own module: SDRIO_bladeRF.dll, etc. Applications can load these modules, query if devices are present, and then interact with them. All data transfer is asynchronous. Currently I only support Windows, though the API is OS-agnostic and the drivers (particularly rtl-sdr) should be able to be ported in a straightforward manner. SDRIO is licensed as LGPL. However, because it uses GPL code, it may not be distributed with non-GPL applications. It may still be used with non-GPL applications as long as the distributions are kept wholly separate (no bundling, auto-downloaders, etc.). Code is currently kept at: https://github.com/spcutler/SDRIO Right now it is in a very alpha state, and subject to change. Documentation is also currently minimal, although I hope the API is clear enough to be obvious. I hope to stabilize things once I get some outside feedback and suggestions. Thanks! -Scott PS: Mirics dongle support should be coming soon due to the generosity of a fellow member of this mailing list.

1 0

sdrangelove, make gives error [Solved]
by Ben Z en de rest 01 Mar '14

01 Mar '14

Hi, the problem with the installation of sdrangelove is solved. I had mistaken the Qt5 version and I installed the 32 bits version but I am running 64 bits Ubuntu. So make succeeded without errors now. TnX, Ben (can anyone help me how to reply to my own message, so the problem and solution make a thread )

1 0

acarsdec 2.0 with built-in rtl_sdr frontend
by Thierry Leconte 01 Mar '14

01 Mar '14

Thanks to Andreas Reinhardt who have port my old acarsdec code to rtl_sdr (http://lists.osmocom.org/pipermail/osmocom-sdr/2013-July/000712.html) I gain interest back to acars decoding and decided to rewrite completely acarsdec and to add it some new features, in particular a rtl front end. So , I am please to announce the acarsdec 2.0 release : https://sourceforge.net/projects/acarsdec Acarsdec is an open source, multi-channels realtime ACARS decoder for Linux. It features : - up to four channels decoded simultaneously - multi-threaded - error detection AND correction (all one error corrected and some two errors) - input from sound file , alsa sound card or software defined radio (SRD) via a rtl dongle The 4 channels decoding is particularly useful with the rtl dongle. It allows to directly listen simultaneously to 4 different frequencies. Ie: acarsdec -r 0 131.525 131.725 131.825 Will decode acars on 3 frequencies with the rtl dongle number 0. try and enjoy Thierry Leconte

1 1

rtl-sdr licensing question
by Scott Cutler 28 Feb '14

28 Feb '14

Greetings, all-- A while back I asked some questions about licensing of the rtl-sdr libraries, especially with regard to use with non-GPL software. At the time, I was told that the ExtIO libraries were considered an acceptable use-case. My code has been in development, and for various reasons--the largest being the desire for transmit support--I have developed my own HW abstraction layer called SDRIO. At the moment, I support rtl-sdr, bladeRF, and Funcube Dongle devices via the abstraction layer. The layer will, of course, be GNU licensed and thus free for anyone to modify or extend. My intent is thus for SDRIO to live in the same niche as ExtIO and thus have the blessings of the developers. I'm aware that you cannot give legal advice; my hope is only that, if someone comes to me saying I violated the rtl-sdr license, that at least I can tell them that I've talked with the lead developers and that they've given me the same permissions as the ExtIO developers. I have placed the code here in case anyone wishes to look at the current state (though please note that the text of the licensing is not yet finished): https://github.com/spcutler/SDRIO/blob/master The SDRIO_RTLSDR module is quite thin and I hope does not give the impression that SDRIO is just supposed to be a wrapper. If you look at the other devices, you can see that they require more code and that the project as a whole is quite a bit more than a wrapper. Thank you for your time! -Scott

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Bounce action notification
by mailman＠lists.osmocom.org 28 Feb '14

28 Feb '14

This is a Mailman mailing list bounce action notice: List: osmocom-sdr Member: beroset(a)ieee.org Action: Subscription disabled. Reason: Excessive or fatal bounces. The triggering bounce notice is attached below. Questions? Contact the Mailman site administrator at mailman(a)lists.osmocom.org.

1 0

sdrangelove, make gives error
by Ben Z en de rest 27 Feb '14

27 Feb '14

Hi, I am trying to build sdrangelove on Ubuntu 12.04 LTS. I did manually install cmake to have the required newer version. I did install Qt 5.2 and had cmake run with cmake ../ -DCMAKE_PREFIX_PATH=/home/pe2bz/Qt/5.2.1/gcc/lib/cmake After that, running make fails with this error: [ 68%] Building CXX object CMakeFiles/sdrbase.dir/sdrbase_automoc.cpp.o Linking CXX shared library libsdrbase.so /home/pe2bz/Qt/5.2.1/gcc/lib/libQt5Core.so.5.2.1: could not read symbols: File in wrong format collect2: ld gaf exit-status 1 terug make[2]: *** [libsdrbase.so] Fout 1 make[1]: *** [CMakeFiles/sdrbase.dir/all] Fout 2 make: *** [all] Fout 2 I did a google search on the File in wrong format message but I can not find a solution related to libsdrbase.so Can anyone help me with this ? Thanks, Ben

1 0

Bounce action notification
by mailman＠lists.osmocom.org 25 Feb '14

25 Feb '14

This is a Mailman mailing list bounce action notice: List: osmocom-sdr Member: luca.bongiorni1(a)studenti.unimi.it Action: Subscription disabled. Reason: Excessive or fatal bounces. The triggering bounce notice is attached below. Questions? Contact the Mailman site administrator at mailman(a)lists.osmocom.org.

1 0

rtl_tcp problem or not?
by Favati 25 Feb '14

25 Feb '14

Hi there! I'm using a dongle on a raspberry + rtl_tcp and sdrsharp on another machine (quad core.... 3gb ram...good machine!) The problem occour at 00:57 http://www.youtube.com/watch?v=4E2MPfEzEi8 and at 1:34 in this video: http://www.youtube.com/watch?v=8snz1wQSRpw If i stop and start sdrsharp, it works ok for some minutes...then the problem is up again! No errors appear on the console of raspberry/rtl_tcp I'm not able to understand if it's a problem of rtl_tcp,raspberry or whatelse... Things i've tryed: 1) Changed the samplerate 2) Changed the raspberry (tested tp1/tp2 too...getting 4.98v!!!) 3) Changed the dongle 4) Updated sdrsharp The dongles tryed work ok on a pc I've no more idea.... Anyone can help me? PS: If someone know a program that works in linux and is similar to sdrsharp AND CAN INTERFACE TO A REMOTE RTL_TCP...

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