Re: LF: Re: Re: WSPR threshold reports

[rogerlapthorn@gmail.com]

Thanks for the screen shots Jim. 

I continue to be simply amazed that my tiny signal is being decoded by ANYONE at all.  It certainly proves what a wonderful resource WSPR is for experimenting with QRP, antennas, rigs etc. on any band, but especially on 136 and 500kHz. 

73s
Roger   G3XBM



On 17 Sep 2009 20:29, James Moritz <james.moritz@btopenworld.com> wrote:
> Dear Dave, Roger, LF Group,
> 
> 
> 
> I have attached a screen shot of WSPR signals from SM6BHZ and G3XBM received just now, using Spectrum Lab set up for QRSS3 reception. The corresponding WSPR spots were:
> 
> 
> 
> 1836 -12  0.0   0.503925  0 SM6BHZ JO57 33
> 
> 1840 -27  2.9   0.503890  0 G3XBM JO02 0
> 
> 
> 
> SM6BHZ was an audible signal which would have been weak but copy-able CW - I expect Gus's signal will pick up by 10dB or so as the night progresses. G3XBM is never audible at all - the QRN is building rapidly now, but during the day I get 100% copy at about -25 or -26dB; when noise levels build up I sometimes get correct copy at -30dB or so. So that's what it looks like when it is working ;-)
> 
> 
> 
> It makes no detectable difference whether I use the SSB filter or 250Hz CW filter on the IC718 - even the local signals on 500k are not really strong enough to overload the audio, provided the RF gain is backed well off so that the S meter reads about s7 or 8. You do need the narrow filter on 136k of course.
> 
> 
> 
> Cheers, Jim Moritz
> 
> 73 de M0BMU
>