SDRplay Community Forum

The first image shows what it is now with usb connection relocated.

The second image shows what it looked like with noisy usb. Note spikes.....

I have solved the problem - seems to have been a noisy usb port in my case. Simply changing the usb connection has completely removed those spikes. I will do a screenshot before and after later.

Yes indeed - it seems unpleasant to the eye rather than a hindrance to be honest. Though I wonder if a top end sdr like Flex radio would suffer such a problem? Thanks for the reply ...

Hi - I get interference spikes at small regular intervals across the band scope - they show up as thin lines on the waterfall. I notch them out if they coincide with a signal I'm listening to. How can you get rid of them though? I have high density ferrite rings at various locations along the usb ca...

Thank you jon for the eye opener and insight into mains ground system as a effective radio ground. Certainly will be trying this out - cheers

mike

Is this method really as simple as it sounds? The way I understand it is you simply crocodile clip the outside of f-connector and run an mains earth wire into an unused mains plug earth pin and plug into household socket??? Seems odd to do that to me - but does it actually work in an sdr set up? Tho...