No "osmocom source" and no RTL dongle

[Ian Bennett]

All,
        I followed the install instructions from here: 
https://wiki.gnuradio.org/index.php/InstallingGR
        After uninstalling 3.7 that came from the Ubuntu repos, I did:
$ sudo add-apt-repository ppa:gnuradio/gnuradio-releases
$ sudo apt update
$ sudo apt install gnuradio
        This gave me version 3.8.2.0 (Python 3.6.9) and not 3.9 as indicated.
        I now have no source for my RTL dongle, nor do I have a "osmocom 
source".
	I note that during the install, one of the "Suggested Packages" is gr-osmosdr however at the bottom 
of the website install instructions it states "Attention: Do NOT try to install further packages 
like `gr-osmosdr` via Ubuntu's package management (i.e. using "apt"). Ubuntu will try to install a 
potentially incompatible version and your system will be in an undefined state."
        How do I solve my RTL dongle and osmocom source problem?
        Guidance appreciated.

Ian

On 6/11/21 7:51 am, Ian Bennett wrote:
> Cinaed,
>      Thanks for the reply.
>      librtlsdr-dev was already installed. The other two were not and pulled in some other 
> dependencies during the install process.
>      This did not fix my problem though.
>      I couldn't install gr-baz from the ubuntu repo so followed the build process for gr-baz on 
> github. I could then get it to run, but with no output.
>      After further reading, the website recommends a minimum version of 3.8. I note that 3.9 is 
> available via a PPA so will install that and work through the tutorials (which I didn't find 
> yesterday). Must have had a "man" look ;-)
>      Thanks again for your assistance.
>
> Ian
>
> On 6/11/21 6:47 am, Cinaed Simson wrote:
> > I'd recommend installing -the following - if you haven't already done so
> >
> >    librtlsdr-dev
> >    libosmosdr-dev
> >    libosmocore-dev (not sure)
> >
> > And I'm just guessing - I don't have gnuradio 3.7 or ubuntu installed.
> >
> > Also,unless you were able to in install the ubuntu package gr-baz from one of the ubuntu 
> > repositories - which is unlikely, then download and built  the code from
> >
> >    https://github.com/balint256/gr-baz
> >
> > I's an OOT module which doesn't come with gnuradio.
> >
> > And I would test using the rtl dongle with gnuradio. Create a flowgraph with the "osmocom soure" 
> > and a "qt gui sink".
> >
> > -- Cinaed
> >
> > On 11/5/21 03:40, Ian Bennett wrote:
> > > Good Evening,
> > >     I am taking my first tentative steps with GNU Radio.
> > >     I am using Ubuntu 18.04.6 LTS with a RTL2832U dongle from RTL-SDR.COM. This combination works 
> > > fine with CubicSDR and rtl_433.
> > >     I installed gnuradio-companion from the repo (sudo apt install gnuradio) which gave me 
> > > version 3.7.11-10.
> > >     I found a tutorial that built a FM receiver, so thought that would be a 
> > > good place to start.
> > >     After a few issues building the receiver (solved with google), I finally got to the point 
> > > where I could execute the flow graph.
> > >     Now I get the following in the terminal:
> > >
> > > Executing: /usr/bin/python -u /data/Amateur_Radio/SDR/GNU-radio/top_block.py
> > >
> > > Traceback (most recent call last):
> > >   File "/data/Amateur_Radio/SDR/GNU-radio/top_block.py", line 35, in <module>
> > >     import baz
> > >   File "/usr/local/lib/python2.7/dist-packages/baz/__init__.py", line 40, in 
> > > <module>
> > >     from baz_swig import *
> > > ImportError: No module named baz_swig
> > >
> > >     I can see there is "No module named baz_swig" but no amount of googling 
> > > yielded a solution.
> > >     Hoping someone can help.
> > >     Regards,
> > >
> > > Ian
> > >
> > > .