Re: Wideband DSP Blanker Fantastic but with artifacts
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It can be improved when I have time.
Simon Brown, G4ELI
From: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] On Behalf Of Tony_AD0VC
Sent: 10 September 2017 13:36
Subject: [SDR-Radio] Wideband DSP Blanker Fantastic but with artifacts
Attached is a screen capture showing the NDB band. On the left side of the waterfall is a heavy BUZZ pattern caused by a street light near my antenna. Switching on the wideband DSP noie blanker virtually eliminates it and NDBs that were inaudible or invisible become detectable. It's remarkable how well this works. But you will notice that something happens over at 321Khz and 400Khz. These two stronger NDBs become distorted. If you zoom in on them, it looks like they have picked up a series of hum lines of their own.
At sunrise when the street light goes off, the distortion at 321Khz and 400Khz goes away even though the blanker is still on.
This is not a big problem since I just turn off the blanker after scanning through the lower frequency portion of the band.
The wideband blanker is an excellent tool! Thanks Simon!