Hi Dave!
> However bad a system Powerline is, it does NOT generate noise at
> 500kHz. It occupies 2-28MHz more or less with most of the devices
> having very deep notches in the amateur bands.
Did not know that, thanks!
>
> Wideband QRM like yours is far more likely to be switch mode psus (eg
> unfiltered PC supplies) or low energy lightbulbs.
Yes, one single noise source I was able to track down was the energy saving
bulb of my neighbours bedroom. Another source is my own Nokia cellphone charger
:(
But there is much much more out there.
I think it might be "something digital", thought it might be PLC, because
sometimes the noise drops and increases rhythmically, like a multiway data
transmission, somehow resembling a well used Packet Radio qrg.
vy73
Dennis
DL6NVC
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