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From: "Mike Dennison" <mike.dennison@ntlworld.com>
To: rsgb_lf_group@blacksheep.org
Date: Tue, 22 Oct 2013 17:24:21 +0100
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Subject: Re: LF: 74.5493 instead...(1of2)
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Status: O

Dex, glad to get confirmation that the late captures were of your 
sigs. The best I have seen so far is a readable 'X', but otherwise 
tantalisingly below the threshold.

I believe we can get another 3dB by moving to a lower frequency. The 
one currently in use is in the skirts of the noise from DCF77 and 
this will probably affect the mainland Eu stations more than me. I 
was unsure whether the reduced noise a kHz or two lower was due to 
the resonance curve of my own antenna, and still need to do more work 
on this (rainy weather is stopping me at present). I have also tried 
to do an overnight wideband spectrum plot, but again have been 
thwarted by high static over the last few days.

If that 3dB improvement in SNR is possible then you should be easily 
readable on a good night. And the change in the oak trees will 
definitely help.

It's interesting stuff. I will publish the result of my noise tests 
as soon as I have good data.

73 de Mike
=========

> I've been running /5 from sundown to sunup.  200 watts leaving the
> shack.  Perhaps the signal will improve when the oak trees under the
> top hat wires are bare.  The leaves are just now beginning to fall.  
> Most of the several hundred feet of top hat wires run over a
> combination of oak and pine trees.  I've often wondered if my antenna
> would be more efficient with more loading instead of having the top
> hat.  I'll probably never know because it would be way to much work to
> find out.  The antenna has been in use for 8 years.  I may find out
> when the top hat wire fails because I doubt I'm now able to replace
> them.
> 
> Nice to at least see those traces Mike.
> 
> Dex
> 
> Bob Raide wrote:
> > Mike;
> > I can see that I have to stay on longer at least to 0600.  You
> > haven't missed a night of good captures-QRN, poor conditions doesn't
> > stop you!  Very consistent  captures-good to see Dex "almost"
> > there-just gonna need a decent night with lower noise that should be
> > coming with the colder WX-Bob
> >  
> > > From: mike.dennison@ntlworld.com
> > > To: rsgb_lf_group@blacksheep.org
> > > Date: Mon, 21 Oct 2013 17:37:09 +0100
> > > Subject: Re: LF: 74.5493 instead...(1of2)
> > >
> > > More good pictures attached from last night despite some heavy
> > > static. Still no complete call from Dex on 74.5485kHz, but plenty
> > > of traces again.
> > >
> > > Mike, G3XDV
> 
>