Re: LF: RTTY on 73.3 kHz?

["James Moritz" <j.r.moritz@herts.ac.uk>]

Dear Dexter, Peter, LF Group,

Can't remember what the ERP for the 73.25k Rugby transmission was when I 
measured it last, but I think it was in the 10s of kW. With amateur signals 
of the order of 100mW or so, the difference in ERP is more like 50 to 60dB. 
No wonder the noise sidebands are such a pain for amateur operation in the UK!
Incidentally, I find that the 25Hz filter on the SPM19 selective level 
meter I have rings rather badly with thunderstorm QRN, so often better 
results can often be had using a wider filter, even with narrow band signals.
Cheers, Jim Moritz,
73 de M0BMU