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iain macdonnell - N6ML ar at dseven.orgI just started playing with a HackRF One ("clone"). This seems to basically work: --args 'hackrf' -N RF:0,IF:24,BB:28 -S 4000000 -o 100e3 -q 0 -d 0 .... I think 4M SMPS is around the limit for the processor in my RPi3 - beyond that, regular traffic sounds like it's encrypted :) Not sure if '-g' does anything in this context? I included the '-o' since there's a pretty hefty DC center spike. Still need to figure out if I can make op25 park on a fixed center frequency and find the channels with the sampled space, but I need something better than the RPi3 to cover the system that I want to monitor (channels span about 5MHz). You probably know already, but in case not; the gains are: RF: preamp - either 0 (off) or 14 (on) IF: aka LNA - from 0 to 40 in 8dB steps BB: "baseband" (a.k.a. VGA) - from 0 to 62 in 2dB steps Mine mysteriously stopped receiving on a few occasions yesterday. Nothing in the output to explain why (with '-v2') - it just stopped showing TSBKs (and CPU usage dropped to nothing). I cranked it up to '-v10' yesterday, but haven't reproduced the problem (yet).... ~iain On Sun, Sep 6, 2020 at 11:03 AM <op25 at zellners.com> wrote: > > > Ok.. .with the Airspys hidden magic spell documented... > > Do the HackRF's need something more like that??? > > I've got: > > --args 'hackrf' -g 65 -f 412.34e6 -N 'RF:14,IF:32,BB:26' > > As the various gains etc.....Any thing more to make it work > "correctly?" :) ;) :) ;) > > That would certainly help with some other tests I'd like to do with > OP25 v. some other stuff... > > Thanks advance.... > >