Re: My frequency spectrum is being shown inverted. Why?


Bob KW4CQ
 

Just tried my SDRplay SDRduo with the SDRuno program and it works fine in ALL respects.  Still hoping to get the SDR console issue resolved sooner or later as it has a few features in it I have been accustomed to using.  Thanks for all you help Simon and everyone.
Bob

On Sun, Dec 13, 2020 at 9:09 AM Simon Brown <simon@...> wrote:

Hi,

 

It’s applied to the returned samples before they are sent to the FFT / demodulation. It’s independent of the per-radio DLLs. It’s simply swapping I and Q. Also there’s another radio ( I forget which) which returns QI[0] QI[1] QIQ[2]… rather than IQ[0] IQ[1] IQ[2]…

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of jdow
Sent: 13 December 2020 13:31
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] My frequency spectrum is being shown inverted. Why?

 

Is this a message sent to the Source...dll or is it done inside the main program? I'll have to experiment more.

{^_^}

On 20201213 05:28:39, Simon Brown wrote:

Well it works, that’s all I can say – tested myself.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of jdow
Sent: 13 December 2020 13:25
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] My frequency spectrum is being shown inverted. Why?

 

See the forum - that is what I did. I posted it as a bug there.

I expect the center frequency to remain constant and the displayed signals to flip from one side to the other. I did not see that, which rather surprised me.

{^_^}


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