Hi Rich,
Only issue I have with your test method is that the gain settings should have been adjusted for max SNR, I notice you have the gain settings set the same for both devices in your test. For example using a similar flow graph for the RTL dongle with the default settings of rf=10,if=20,bb=20 I get a signal of -50db with noise -75db, if I increase the rf from 10 the point before it overloads which for me at that particular frequency is rf=35 then the signal is at -25db noise at -65db, that's a 25db increase in signal and 10db increase in noise. From: HackRF-dev [mailto:hackrf-dev-boun...@greatscottgadgets.com] On Behalf Of Rich S Sent: Monday, 13 July 2015 8:15 PM To: hackrf-dev@greatscottgadgets.com Subject: Re: [Hackrf-dev] Sensitivity I did this comparison a bit ago using GNURadio because I could make all the settings identical without having to worry about how SDR# was programmed. Typically, you would not want to run the HackRF at 2 MSPS, but to keep the comparison accurate, I did. >From my dropbox: https://www.dropbox.com/s/v18qzlpojpnybjj/RT820vsHackRF.pdf?dl=0 On 7/13/2015 12:11 AM, Tom wrote: Sorry to re hash and old topic but can I ask if any member can do a screenshot like the one I have linked in below comparing an RTL dongle and the HackRF using SDR#, I'm about -10db worse on the HackRF without using the amp. Just want to make sure this is normal behaviour or a fault. Thanks https://mega.co.nz/#!MwUxVIZS!JWhfoou7LcwI6HeHVU5jxsfsamFpADulwez6Wz6oNEk <https://mega.co.nz/#%21MwUxVIZS%21JWhfoou7LcwI6HeHVU5jxsfsamFpADulwez6Wz6oN Ek> _______________________________________________ HackRF-dev mailing list HackRF-dev@greatscottgadgets.com <mailto:HackRF-dev@greatscottgadgets.com> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
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