Those pulsed 'raspberries' sound like a switchedmode PSU in standby. Any devices around the house left on standby using the remote control, rather than switched off?
The constant raspberries sound like arcing from overhead HT power lines, Western Power have been quite good with replacing leaky insulators, it's in their own interests to do so. I don't know which distribution company you have, but you could give them a try.
Sounds like an over-modualated (square wave) producing these spikes in bands, repeated across the spectrum. I have heard much the same around 14 Mhz and elsewhere.
If there's no QSB it'll ground wave from somewhere locally.
The second one, on ten metres I haven't heard before.
Somewhere there's a YouTube video showing what sound to expect. from PLT.
Those pulsed 'raspberries' sound like a switchedmode PSU in standby. Any devices around the house left on standby using the remote control, rather than switched off?
The constant raspberries sound like arcing from overhead HT power lines, Western Power have been quite good with replacing leaky insulators, it's in their own interests to do so. I don't know which distribution company you have, but you could give them a try.
Fill in an Ofcom complaint.
bolloxinator 9 months ago
Sounds like an over-modualated (square wave) producing these spikes in bands, repeated across the spectrum. I have heard much the same around 14 Mhz and elsewhere.
If there's no QSB it'll ground wave from somewhere locally.
The second one, on ten metres I haven't heard before.
Somewhere there's a YouTube video showing what sound to expect. from PLT.
73 G3NBY
g3nby 1 year ago