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Technical Topics => SDR - Software Defined Radio => Topic started by: Ray Lalleu on April 04, 2023, 1028 UTC

Title: Notch filter on KiwiSDR ?
Post by: Ray Lalleu on April 04, 2023, 1028 UTC

As a remote user of KiwiSDR servers, I've never found any notch filter.

Maybe this is again a well hidden feature ?

Title: Re: Notch filter on KiwiSDR ?
Post by: Teotwaki on April 11, 2023, 1500 UTC

I've not looked at the kiwis very closely but this SDR 

http://websdr1.kfsdr.com:8901/

has two notch filters, "Notch 1" and "Notch 2" right under the volume control

Title: Re: Notch filter on KiwiSDR ?
Post by: ~SIGINT~ on April 12, 2023, 0014 UTC

I agree, notch filters are a significantly lacking feature. One could implement this externally on the local PC, either via software or hardware, but it is definitely not convenient.

SDRuno has 4 simultaneous and independent notch filters and they work very well. I use 2 of them regularly to notch out the mark and space of the RTTY signal which occasionally shows up on 11175.0 kHz.