I have been doing some RFI hunting today, in order to find some of the noisy switch-mode power supplies in the appartment.
I found a rather noisy one (cheap "universal" laptop supply) with wideband "carriers" every 70 kHz and the noise level dropped considerably when that one was disconnected.
I have been considering replacing as many as possible of the switch-mode PS's with linear regulated ones, because it is far too noisy here, Maybe not worth it, since some neighbours probably have some noisy ones as well.
In any case I am enjoying the little bit more quiet environment here.
It is far from over yet, but a good beginning.
Mike WU2D Does a CCC Camp POTA with 1930's Gear
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*FB Mike. CW without sidetone is not for the faint of heart. *
*Walter KA4KXX saw Mike on the Reverse Beacon Network. *
*Mike's QSO with KN4RRQ was espe...
4 days ago