[Hackrf-dev] FM receive difference between HackRF and RTL-SDR

[Mehdi Asgari]

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 <simon at 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 at greatscottgadgets.com
>> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
>>
>>
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