On Sat, 20 Nov 2021 13:54:58 -0500 (EST) Franco VENTURI <fvent...@comcast.net> wrote: > Glen, > using the 'gr-soapy' source and the latest SoapySDRPlay module > (https://github.com/pothosware/SoapySDRPlay3), you should be able to control > biasT by using this argument: > > biasT_ctrl=true > > (see here for some more details here: > https://github.com/pothosware/SoapySDRPlay3/issues/21)
I don't have gnuradio-3.8 installed any more, but I do still have the .grc gr-soapy YAML file for my RSP1A which I used then, and that definitely has a properties configuration entry for the soapy block which in my case is "sdrplay_biastee: 'False'", and (as the OP is also interested in the MF/VHF notches), similar entries for "sdrplay_dabnotch" and "sdrplay_rfnotch". These are not present in the YAML file for the built-in soapy block provided by gnuradio-3.9.1.0 and later. To provide a RF notch with that one I had to supply a device argument of "rfnotch_ctrl=true", along the lines of the one you have suggested above for bias tee. So how you do it seems to depend on which version of gnuradio and/or soapy block you are using.
