osmocom-sdr February 2021

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gr-osmosdr: add clock_source= parameter
by Michael Loeffler 26 Mar '21

26 Mar '21

Hello, the attached patch allows to set the clock_source on uhd devices in programs like gqrx. Bye

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Idea for 2021: Regular "OsmoDevCall"
by Harald Welte 25 Mar '21

25 Mar '21

Dear Osmocom community, as the pandemic continues and physical meetings are out of the question for the forseeable future, it would be a good idea to have a periodic virtual online meeting of the interested Osmocom community. I was thinking of a format where we would serve two major purposes: 1) technical talks about osmocom relevant topics - ideally current/recent developments * can be pre-recorded to avoid any problems with technical setup, streaming, ... * should ideally have a Q+A session at their initial "airing" during one OsmoDevCall 2) unstructured solicited social event (USSE) * random chat in audio (optionally video) * not recorded, obviously The recording of the technical presentation should then be permanently made available (like the presentations of our prior OsmoCon / OsmoDevCon). Not every OsmoDevCall would neccessarily need the two parts, but I think it would be great if we can make that happen. We could also have e.g. a two-weekly schedule for the USSE and a monthly schedule for the technical presentation. We'd need somebody to volunteer to "manage" the "broadcast" side of this, preferably somebody with at least some prior exposure to online events (like the c3voc). I'm using https://osmocom.org/issues/4928 to collect a tentative list of topics. Feel free to add your ideas there, as well as any comment/ feedback you may have. Regards, Harald -- - Harald Welte <laforge(a)osmocom.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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FUNcube Dongle V1.0 not working with osmocom Source
by Dennis Real 28 Feb '21

28 Feb '21

Hi, I´m trying to get my FUNcube Dongle (V1.O NOT the Pro+) to work on Ubuntu 20.04.1 LTS but it doesn´t work. On a rasberry pi4 (Raspbian 10) the dongle is working in gnuradio-companion together with the osmocom-source. So the hardware seems to work. On Ubuntu I get following errors: 1. Gnuradio-companion as "osmocom Source" with device string "fcd=0": Executing: /usr/bin/python3 -u /home/reald/grc/osmocomsrc_fcd.py gr-osmosdr 0.2.0.0 (0.2.0) gnuradio 3.8.1.0 built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf bladerf rfspace airspy airspyhf soapy redpitaya freesrp Using FUNcube Dongle V1.0 (hw:2) gr::log :INFO: audio source - Audio source arch: alsa gr::log :INFO: fcd0 - Audio device hw:2 opened gr::log :INFO: fcd_control0 - FunCube Dongle V1.0 initialized. gr::log :INFO: fcd_control0 - Dongle: FCDAPP 18.10 gr::log :INFO: fcd_control0 - LNA gain set to: 20 Traceback (most recent call last): File "/home/reald/grc/osmocomsrc_fcd.py", line 275, in <module> main() File "/home/reald/grc/osmocomsrc_fcd.py", line 253, in main tb = top_block_cls() File "/home/reald/grc/osmocomsrc_fcd.py", line 145, in __init__ self.osmosdr_source_0 = osmosdr.source( File "/usr/lib/python3/dist-packages/osmosdr/osmosdr_swig.py", line 1074, in make return _osmosdr_swig.source_make(*args, **kwargs) RuntimeError: boost::too_many_args: format-string referred to fewer arguments than were passed >>> Done (return code 1) 2. GQRX When configuring gqrx the dongle is listed. But after every start of gqrx the message "boost::too_many_args: format-string referred to fewer arguments then were passed - Please select another device" appears and the dongle cannot be used. 3. osmocom_fft -a fcd=0 gr-osmosdr 0.2.0.0 (0.2.0) gnuradio 3.8.1.0 built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf bladerf rfspace airspy airspyhf soapy redpitaya freesrp Using FUNcube Dongle V1.0 (hw:2) gr::log :INFO: audio source - Audio source arch: alsa gr::log :INFO: fcd0 - Audio device hw:2 opened gr::log :INFO: fcd_control0 - FunCube Dongle V1.0 initialized. gr::log :INFO: fcd_control0 - Dongle: FCDAPP 18.10 gr::log :INFO: fcd_control0 - LNA gain set to: 20 Couldn't instanciate source (no device present?). The device itself is found: $ lsusb Bus 001 Device 009: ID 04d8:fb56 Microchip Technology, Inc. FUNcube Dongle V1.0 $ dmesg [10627.256845] usb 1-9: new full-speed USB device number 9 using xhci_hcd [10627.408263] usb 1-9: New USB device found, idVendor=04d8, idProduct=fb56, bcdDevice= 0.02 [10627.408268] usb 1-9: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [10627.408272] usb 1-9: Product: FUNcube Dongle V1.0 [10627.408275] usb 1-9: Manufacturer: Hanlincrest Ltd. [10627.416513] hid-generic 0003:04D8:FB56.0007: hiddev1,hidraw3: USB HID v1.11 Device [Hanlincrest Ltd. FUNcube Dongle V1.0 ] on usb-0000:00:14.0-9/input2 [10627.849214] usb 1-5.1.1: reset high-speed USB device number 8 using xhci_hcd [10628.703275] parport0: no more devices allowed [10628.703283] ppdev0: failed to register device! Package: gr-osmosdr Version: 0.2.0-2 Package: libosmosdr0 Version: 0.1.8.effcaa7-7 Any ideas? Thanks for your help! Regards Dennis

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Support on a RTL_SDR Receiver R820T2 USB Tuner 100KHz-1 7GHz UV HF
by jarrod emery 28 Feb '21

28 Feb '21

Hi Guys….. Um im far from an expert at all this, I hardly even know what this device is capable of doing.. but I bought one because they sound very interesting if you know what you doing, what you can tune into etc… But I have run into some trouble.. I bought a RTL_SDR Receiver R820T2 USB Tuner 100KHz-1 7GHz UV HF… I have a Mac OS running MoJave version10.14.6 (18G103). I downloaded CubicSDR, it installed perfectly.. the trouble I’m having is the software not picking up my Tuner.. well it does pick it up after a few minutes, but its like its not throwing enough power to keep a stable connection to CubicSDR.. What can I do to fix this? Is there anything at all I can do to fix this pretty easily? Or is it very hard? Or do I have to buy more parts etc?? Can you please let me know so I know if its just a waste of space lol… Cheers, Regards Jarrod

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osmocom-sdr February 2021