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.
New DMR repeater now operational in the South-East of Ireland - A new MMDVM digital repeater is now on test from Mt. Leinster in Co. Carlow. Considering that the summit of Mt Leinster is 794 metres above sea level, it ...
21 hours ago