Sensitivity is a broad term to use here... especially since sensitivity is really tied to a particular waveform.
To really understand performance you must consider: 1. Noise figure 2. IP3 3. out of band rejection/selectivity 4. Dynamic Range A highly sensitive receiver with 2-bit quantization would not be useful if you have a strong broadband jammer and poor out of band rejection. (ie. one on a radio telescope for example, see http://en.wikipedia.org/wiki/United_States_National_Radio_Quiet_Zone) For reasonable performance in either case you'll want to consder an LNA and filter for either HackRF or RTL SDR. For example: http://ava.upuaut.net/store/index.php?route=product/product&path=72_73&product_id=99 -John On Wed, Apr 1, 2015 at 8:08 PM, Tom N <vsbo...@hotmail.com> wrote: > Thanks Stefan, > > Just needed to confirm this with others. > > Completely understand that they are two different devices built on > different hardware etc.. etc.. but at the end of the day receive > performance is the one thing that really counts when using SDR and if i can > barley pick up a community radio station on 151mhz that is only 10km away > from me using the hackrf with the ant500 but the signal screams in using > the $12 dongle and the same antenna then that's not on. > > If Mike ever considers a HackrfTWO please put receiver sensitivity/SNR at > the top of your priority. > > Cheers > > ------------------------------ > Date: Wed, 1 Apr 2015 08:16:05 -0500 > Subject: Re: [Hackrf-dev] Sensitivity > From: wagen...@gmail.com > To: vsbo...@hotmail.com > > Yes, big time! > > Stefan > > On Wed, Apr 1, 2015 at 5:45 AM, Tom N <vsbo...@hotmail.com> wrote: > > Am I correct in saying that a rtl dongle is more sensitive then the hackrf? > > I have done many tests with different software, sdr#, gqrx, sdr console > and have tried every different gain setting, samplerates, bands, but my > conclusion is that the SNR is better on the dongle. > > Can other members please confirm their findings comparing the two? > > _______________________________________________ > HackRF-dev mailing list > HackRF-dev@greatscottgadgets.com > https://pairlist9.pair.net/mailman/listinfo/hackrf-dev > > > > _______________________________________________ > HackRF-dev mailing list > HackRF-dev@greatscottgadgets.com > https://pairlist9.pair.net/mailman/listinfo/hackrf-dev > >
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