Device arguments and gain settings for SDRPlay under gr-osmosdr

[Chris Moore]

Hi -

Wondering if anyone can point me to the available device arguments and different gain setting options for the SDRPlay driver under gr-osmosdr?

Thanks

[Robert Eckelmann]

It lookslike there is not much documented for the DSRPlay and gr-osmosdr ..

https://osmocom.org/projects/gr-osmosdr/wiki#SDRplay-Source

Maybe a look in the source code of gr-osmosdr wold help..

[Bruce]

On 15/08/2019 2:58 am, Chris Moore wrote:
> Hi -
>
> Wondering if anyone can point me to the available device arguments and different gain setting options for the SDRPlay driver under gr-osmosdr?

I did discover a compile time option in SoapySDR that allowed the RF
Gain (IF Gain already appeared) to appear in GQRX as well. This is
switched attenuation with 9 steps. The RF gain step isn't constant per
step, and I believe also varies with frequency, as you'd expect. GQRX
just reports the 0-9 step value, calling it "dB".

gr-osmosdr just passes it all through.

A later version of Soapy appeared to have this compile option set by
default, whereas earlier it was set by default in the state where the RG
gain appeared instead as a "setting", which never appeared in GQRX.

Is that any help ?

>
> Thanks
>

--
Cheers,
Bruce

[Chris Moore]

Thanks Bruce -

I’m not using Soapy - just the sdrplay2 branch of gr-osmosdr.  I was able to find the following sdrplay_source.xml which gives the list of supported settings (I think), so I seem to have it all working.

https://github.com/willcode/gr-osmosdr/blob/sdrplay2/grc/sdrplay_source.xml

Sent from my iPhone

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