Hello Wolf,

I guess most of the QRM travels over the mains supply lines. I already considered building a battery-powered remove RX with a 70cm-FM-link to the main station (using a cheap 70cm-LPD handy). The problem is finding a quiet remote RX side where the RX cannot be vandalized or stolen.

The critical parameter of a cheap FM-handy (or even a more expensive one)
will be the dynamic range. At my station the strongest local station (ON6ND
at about 40km) is 70dB stronger than my 'QRSS-noisefloor' at low QRN, DCF39
is even 90dB above this level.
I'm afraid that a strong station will 'close' the entire band when using an
FM link, if you cannot keep DCF39 out of the passband things will be even
worse.

73, Rik  ON7YD