I'd already updated the SPI. I upadted the CPLD too. I managed to get a good quality in GRC (before updating), but not in Gqrx. What would you do in this scenario? What should be checked to make sure everything is OK? Could this be a problem if Gqrx?
On Mon, Sep 22, 2014 at 6:49 PM, Mike Jameson <m...@scanoo.com> wrote: > Have you updated both the 'SPI Flash' and 'CPLD' firmware and rebooted the > hackrf in between? Instructions below: > > https://github.com/mossmann/hackrf/wiki/Updating-Firmware > > Mike > > -- > Mike Jameson M0MIK BSc MIET > Email: m...@scanoo.com > Web: http://scanoo.com > > On Mon, Sep 22, 2014 at 4:00 PM, Mehdi Asgari <mehdi.q...@gmail.com> > wrote: > >> Thank you Mike. >> I tried the above items, but there's no significant change in result. >> I can clearly hear the radio, but it still comes with noise (In fact I've >> played with every config that I thought is related, but I can't reach the >> same quality level that I am receiving via RTL-SDR) >> >> On Mon, Sep 22, 2014 at 6:04 PM, Mike Jameson <m...@scanoo.com> wrote: >> >>> Some things to try: >>> >>> 1) Make your antenna as small as possible as you may be overloading it. >>> Broadcast FM stations are strong! >>> 2) Reduce the gain on all three gqrx gain controls (RF,IF & BB). Try >>> just raising IF until the signal appears. >>> 3) Set the center frequency to something slightly above or below the >>> target frequency and click on the wanted frequency. >>> 4) Set the sampling rate to 10e6 (10M) >>> 5) Start GQRX using a fresh config with 'gqrx -r' >>> >>> Mike >>> >>> -- >>> Mike Jameson M0MIK BSc MIET >>> Email: m...@scanoo.com >>> Web: http://scanoo.com >>> >>> On Mon, Sep 22, 2014 at 3:18 PM, Mehdi Asgari <mehdi.q...@gmail.com> >>> wrote: >>> >>>> Hmmm, I am using the last version of tools (and I don't know how should >>>> I change the magnitude) >>>> By the way, why the same setup in Gqrx produces different outputs for >>>> RTL-SDR and HackRF One? >>>> Here's a link to two screenshots from Gqrx window which may be helpful. >>>> HackRF: http://i60.tinypic.com/o7127d.png >>>> RTL-SDR: http://i57.tinypic.com/10r79lc.jpg >>>> >>>> Thanks >>>> Mehdi >>>> >>>> On Mon, Sep 22, 2014 at 4:54 PM, Simon IJskes <si...@ijskes.org> wrote: >>>> >>>>> The experience sounds the same as my first attempt, under linux, with >>>>> the old osmosdr software, where the magnitude of the signal was >>>>> incorrectly >>>>> assumed to be unsigned. >>>>> >>>>> After fixing this, it all sounded a whole lot better. >>>>> >>>>> Maybe this is also the case in your setup? >>>>> >>>>> Gr. Simon >>>>> >>>>> >>>>> On 22-09-14 15:08, Mehdi Asgari wrote: >>>>> >>>>>> Hi >>>>>> I am a beginner in SDRs (and DSP) >>>>>> For the first sample, I'm, trying to build a FM receiver. I've tried >>>>>> both RTL-SDR and HackRF One (with both GNU Radio and Gqrx) >>>>>> I can easily get the desired station (on 88.0 MHZ) without noise on >>>>>> RTL-SDR (using Gqrx or GRC) >>>>>> But when I use HackRF One (with Gqrx or GRC), I can get the radio, but >>>>>> it's noisy. >>>>>> Is is because HackRF's higher sensitivity or does it need more >>>>>> adjustment to work fine? >>>>>> >>>>>> Note 1: I am using GNU Radio Live DVD and HackRF One with firmware >>>>>> 2014.08.1 and RTL-SDR (RTL2832) >>>>>> Note 2: >>>>>> Link for using RTL-SDR with GRC: >>>>>> http://www.instructables.com/id/RTL-SDR-FM-radio-receiver- >>>>>> with-GNU-Radio-Companion/?ALLSTEPS >>>>>> Link for using HackRF with GRC: Mike's lesson 1 >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> 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 >>>>> >>>> >>>> >>>> _______________________________________________ >>>> HackRF-dev mailing list >>>> HackRF-dev@greatscottgadgets.com >>>> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev >>>> >>>> >>> >> >
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