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


Simon Brown
 

Well,

 

Some radios provide an inverted frequency spectrum via the IF port, so it’s necessary to compensate for this by swapping the I and Q.

 

Try selecting [X] invert spectrum and restart your dongle – the frequency spectrum is then inverted.

 

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 13:16
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] My frequency spectrum is being shown inverted. Why?

 

 

On 20201213 02:56:28, Simon Brown wrote:

It inverts the spectrum in the frequency domain!


What is the visual manifestation? I tried it and noticed no change.
 

As for the spectrum issue (High < Low) – now that the user sees what’s wrong I’m leaving this alone.


Of course, it may even have a perverse sort of use.
 

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 09:28
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] My frequency spectrum is being shown inverted. Why?

 

Regardless - he has accidentally pointed out a bug. I played with the invert spectrum switch in the definitions and it does nothing.

{o.o}


 

 


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