Hi Ben, The HackRF should be quite capable of doing that. I recommend using the `osmocom_siggen` command-line tool that comes with gr-osmosdr. Run `osmocom-siggen -s 20M` for full sample-rate, pick your frequency, set to uniform noise, set whatever bandwidth you want, and raise the gains.
I've just tested it out here, here are a couple of pictures of my setup so you know roughly what to expect: https://imgur.com/a/DcgIZPl Cheers, Mike On Wed, 17 Apr 2019 at 14:04, Ben Greear <gree...@candelatech.com> wrote: > Hello, > > We are trying to use a hackrf to generate noise to test > that our wifi radio properly does CCA and quits transmitting > when the on-channel noise is above a certain threshold (about -70dB) > > In initial testing, however, our radio appears to totally ignore > the RF noise from the hackrf. One reason might be that the hackrf > is outputting a very narrow band of noise (about 500Khz), where we might > need a full 20Mhz of noise to make CCA work reliably. Is there > a good way to make the hackrf output a wider band of noise? > > Another thought I had is that maybe pure RF noise is not enough > and there has to be some sort of wifi-like modulation to make CCA work? > > (And of course, our AP implementation could be busted...we will > continue to try to tie-break that.) > > And, does anyone have any experience with doing this type of testing > that they can share? > > Thanks, > Ben > > -- > Ben Greear <gree...@candelatech.com> > Candela Technologies Inc http://www.candelatech.com > > _______________________________________________ > HackRF-dev mailing list > HackRF-dev@greatscottgadgets.com > https://pairlist9.pair.net/mailman/listinfo/hackrf-dev >
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