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.
Pete's New Sudden Transceiver - Check it out! Note the Juli-yellow front panel color. Featuring FT-8 and WSPR capability. Go Pete! http://n6qw.blogspot.com/2018/09/2018-year-of-ssb-t...
12 hours ago