From: "Dave Sergeant" <dave@davesergeant.com>
To: rsgb_lf_group@blacksheep.org
Date: Mon, 14 Sep 2009 16:29:27 +0100
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Subject: LF: Re: Further QRPpp tests on 500kHz - TX power reduced another 10dB
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And maybe if you take the attenuators out again you will reach the 
dizzy heights of Bracknell.... I did monitor till around 10pm last 
night but no sign, but the QRN got attrocious and I even lost copy of 
Jim. IO think it was a bit late when I turned on this morning, with 
lower noise, but no sign. But if Jim is copying you I am not really 
that much further (well at 120km it is about twice the distance...).

73 Dave G3YMC

On 14 Sep 2009 at 15:52, Roger Lapthorn wrote:

> This afternoon I fired up my 700mW 500kHz WSPR beacon and wet string
> (ERP microwatts) and got 3 reports from G3XVL at 61kms.
> 
> So, I tried putting a 6dB then a 10dB attenuator between the PA and the
> ATU. Even with the power from the PA of just 70mW (never mind what that
> would be as ERP from the antenna) he still gave me a -25dB S/N report!
> These were the three reports in reverse ordder:
> 
>  2009-09-14 14:42  G3XBM  0.503829  -25  1  JO02dg  0.001  G3XVL  JO02nb
>  61  112   2009-09-14 14:40  G3XBM  0.503827  -23  1  JO02dg  0.001 
>  G3XVL JO02nb  61  112   2009-09-14 14:36  G3XBM  0.503823  -18  1 
>  JO02dg  0.001 G3XVL  JO02nb  61  112
> 73s
> Roger
> G3XBM

http://www.davesergeant.com