[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Discuss-gnuradio] Difference in Spectrum Analysis between Wx and Qt
From: |
CEL |
Subject: |
Re: [Discuss-gnuradio] Difference in Spectrum Analysis between Wx and Qt? |
Date: |
Mon, 24 Jun 2019 13:04:43 +0000 |
Hi Martijn,
Can you please use a file sink to record the signal, so that you can
verify that it's different when visualized with Qt and Wx?
Because: there might be a scaling difference between Qt and Wx GUI, but
the math should really be the same inside. I'd hence assume that
there's really a different signal causing the different pictures.
Just to pull one tooth right away: staying with WX will force you to
stay on GNU Radio release 3.7 forever, and within that, using a
component that nobody in the GNU Radio developer community knows how to
maintain. So, I'd still really recommend moving away from WX.
Best regards,
Marcus
On Mon, 2019-06-24 at 12:04 +0000, Martijn Scale wrote:
> I’m using GNU Radio v 3.7.11 on Windows 10, 1903 with Intel i5-3550 CPU and
> on Linux Ubuntu 18.04, with i7-3720 CPU. Both have 16GB mem.
> Further, I have connected a HackRF One with firmware 2017.02.1. To the HackRF
> One I have connected a Siglent SDG1025 Waveform generator, with external GPS
> disciplined oscillator. I used a DC blocker and 30 db attenuation between de
> generator and the HackRF One.
>
> The waveform generator generates a sinewave of 9.76 MHz, I have setup GNU
> Radio with a osmocom Source with 2M sps and Frequency of 10.3 MHz.
> To the osmocom Source I have connected first a QT GUI Frequency Sink.
>
> To my surprise I see an AM modulated signal of around 70 kHz on the 9.76 Mhz
> carrier. I have tried many things, removed the external oscillator and used
> the internal one, tried a different waveform generator (HP33120A), but same
> result, on both machines.
>
> Today by coincidence I found that there is NO AM modulated signal when using
> WX GUI and the WX GUI FFT Sink.
>
> Anyone any thoughts on this? Qt will prevail over Wx in the future, but for
> me this is unexpected behavior and I would like to stick to Wx.
>
>
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
smime.p7s
Description: S/MIME cryptographic signature