The osmosdr source/sink blocks provide a "bandwidth" field, which defaults to 0. Previously on B2xx this field would have no effect, because up until this point, the setting of the analog bandwidth on B2xx did nothing. Now it does.

It looks like trying to set a bandwidth of 0 on B2xx clips to minimum bandwidth (about 1MHz or so, from the resulting spectrum). Not sure what the correct behavior here is. Should there be a magical numeric value (perhaps 0) that means "set it to some sensible default, given the sample-rate", should users of the osmocom source blocks always just set the bandwidth field to something like 0.8*sample-rate, and then for hardware for which analog bandwidth is settable it will do "something sensible"??

I don't know what the correct answer is, just got caught by this with one of my simple_ra users with a B200, and the very-latest UHD drivers.



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