Hello Eberhad, Interesting. BTW there is a QRM source that is there since years, almost every night, a drifting signal arround 474.3...474.5 kHz. I saw it on your grabber as well, so i cannot be loca
Hallo Stefan The drifting signal whith center at 474,4kHz whith sidebands 50Hz ist since 4 or 5 Years permanent 365/7/24. I think it is a advertising plant or a neon sign in the geographical triangl
Hello Eberhard, RR. And who is 'we'? Once you found the source you may also find someone living close to it. If the source makes QRM on other frequencies too, affecting broadcast reception, then he c
if it's drifting, then it might drift onto an NDB frequency. and that would be an aviation hazard. look for local NDB's near this frequency. if none is found, then maybe you could say that it might d
Hallo Jacek the nearest NDB is SA, 474,5kHz the drift is +-5Hz ERP valued to 10..30mW i think, no hazard It is not yet time for the BNetzA 73 Eberhard DL3ZID Am 15.02.19 um 11:11 schrieb Jac
