Today I finally had some time to play with the LimeSDR board and I am happy to report that I got to a point where I have gqrx working using the SoapySDR backend - YAY!
I am running Xubuntu 14.04 where I already have GNU Radio & co installed from our PPA. I then went on and rebuilt SoapySDR, SoapyLMS7 (from lmsuite git), gr-osmodr and gqrx from source and it actually worked
It works quite well considering that we are at this very early stage. I need to get more familiar with the board and also learn how to configure various options through the SoapySDR interface.
I am away from home I donât have access to good antennas here. But I do have a handheld Arrow with me and I will try to catch some satellites tomorrow.
My first attempt at receiving a hamradio satellite with the LimeSDR / Gqrx setup was a success. After some initial fumbling around trying to find the optimal seetings, I captured about 2/3 of the FO-29 satellite pass.
Below is an annotated waterfall where one can clearly see the Doppler shift of the downlink signals as the satellite passes by.
I am used to receiving significantly better APT images, but there was lot of QRM on VHF at this location and also this is a new device for me, so all in all I am very pleased with this first result.
I have a windows with gqrx from pothos install package 2016.06.04 and LimeSDR USB 3.0, when trying to open gqrx it crash with the radio. Can you let me know which configuration you used for the driver? and also if you have a test flow-gram for GNU radio to check if my radio is ok?
I have seen gqrx crash with old images in the LimeSDR, so make sure that the images are up to date and the driver does not print any warnings about old firmware or FPGA images: http://wiki.myriadrf.org/Lime_Suite#Flashing_images
When using gqrx, specify the args to be âsoapy=0,driver=limeâ
LimeSuite is undergoing development and bug fixes but I believe that the copy included with 2016.06.04 installer didnt have any serious bugs that would inhibit the use of the receiver in GQRX.
Hmmm - Iâve rebuilt gqrx from the pothos repo https://github.com/pothosware/gqrx
(gr-osmosdr and gnuradio also) - and using ppa limesuite and soapysdr per http://wiki.myriadrf.org/Lime_Suite - LimeSuiteGUI now shows fft thanks to the uncheck âshow this error next timeâ trick and I can see the local LTE tower, yay!
But gqrx using driver=lime,soapy=0 and tried all these rates:
Sample rates that work: 1.25, 2.5, 5, 10 Msps Bandwidths: 1.5, 4, 10 MHz
and I just get a flat line (scratching head)
@cswiger is that regardless of frequency and gain settings? There have been updates to Lime Suite which have not yet made it into binary builds, so worth building source from master to get them.
Yea, thatâs going to open up the whole can of worms of all the different dependencies and their constantly changing versions that plagues gnuradio build from source - will try to get time to see what version of wxWidgets-dev Iâm missing.
[ 38%] Building CXX object src/oglGraph/CMakeFiles/oglGraph.dir/dlgMarkers.cpp.o
/home/chuck/src/LimeSuite/src/oglGraph/dlgMarkers.cpp: In member function âvoid dlgMarkers::AddMarker(int)â:
/home/chuck/src/LimeSuite/src/oglGraph/dlgMarkers.cpp:93:22: error: âwxEVT_CHECKBOXâ was not declared in this scope
Connect(markerId,wxEVT_CHECKBOX,(wxObjectEventFunction)&dlgMarkers::OnMarkerChange);
(scratching head)