Re: LF: DX VLF experiments in 3HD

[Stefan Schäfer <Stefan.Schaefer@iup.uni-heidelberg.de>]

VLF,

I just had a phone call to DJ6AN, the EMV (EMC) consultant of the German 
amateur radio club.
He confirmed that typical 3rd harmonic supressions of an amateur radio 
station is in the range of 40...60 dB or better, and that one can feel 
fine with 50 dB :-)
He agreed that the station does not have to feel bad when transmitting 
with 750W on 160m  (in DL) :-)
He confirmed that thus he is radiating something in the range of 7.5 mW 
with a lambda 3/4 vertical on the 53m band.
Then his confirmations took a bit longer (but he didn't deny) :-), he 
confirmed that everyone is free to try to receive this signal on 53m.
Confirmations became slower and slower...
Also confirmed that if the 160m TX stn transmits in e.g. OP8, 
experiments can be done in 53m in OP8 and that (of course) the 160m 
transmission does not become illegal just because someone is receiving 
the 3rd harmonic.
Then there was no progress any more and he told me to ask someone 
else... Somehow an interesting phenomenon :-)
73, Stefan/DK7FC