No "osmocom source" and no RTL dongle

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
>>>
>>> .
>>
>>
>