After some interesting discussions with the Airspy developer on Twitter, he pointed at some source code from LinRad which provides information on what registers to set (using airspy_r820t_write) to adjust the R820T2's IF bandwidth.
See here for the register values (and corresponding bandwidths): https://sourceforge.net/p/linrad/code/HEAD/tree/trunk/airspy.c#l383
and here for the register addresses: https://sourceforge.net/p/linrad/code/HEAD/tree/trunk/airspy.c#l968
Allowing adjustment of IF bandwidth gives another lever to adjust in optimising receive performance. It would be nice if all the R820T2 registers were documented somewhere, but I suspect the full documentation is only available under NDA, so making use of what information is available from other open source projects will have to do!
I guess the SoapySDR set/listBandwidth functions would be the correct place to expose these settings?
After some interesting discussions with the Airspy developer on Twitter, he pointed at some source code from LinRad which provides information on what registers to set (using airspy_r820t_write) to adjust the R820T2's IF bandwidth.
See here for the register values (and corresponding bandwidths): https://sourceforge.net/p/linrad/code/HEAD/tree/trunk/airspy.c#l383
and here for the register addresses: https://sourceforge.net/p/linrad/code/HEAD/tree/trunk/airspy.c#l968
Allowing adjustment of IF bandwidth gives another lever to adjust in optimising receive performance. It would be nice if all the R820T2 registers were documented somewhere, but I suspect the full documentation is only available under NDA, so making use of what information is available from other open source projects will have to do!
I guess the SoapySDR set/listBandwidth functions would be the correct place to expose these settings?