Re: LF: 137.7770 kHz

["Gary - G4WGT" <g4wgt@tiscali.co.uk>]

Hi Joe,

Michel's excellent capture of your signal prompted me to check my over-night 
grabber saves & found your signal showing up for a long period of time from 
00:50utc to about 03.30utc on my QRS03 grabber, see attached at 01:40utc. A 
letter "V" seen at the top of image.
73,

Gary - G4WGT.


----- Original Message ----- 
From: <jcraig@mun.ca>
To: <rsgb_lf_group@blacksheep.org>
Sent: Wednesday, June 05, 2013 1:02 PM
Subject: Re: LF: 137.7770 kHz


> Thank-you, Michel.
>
> Good conditions and no mention of a chip, nor could I see one
> on your spectrum.  Yesterday I changed the TX and hopefully
> fixed the chirp and maybe the phase glitches?
>
> There are still bumps (~0.1 Hz) in the spectrum 10 MHz DOCXO output
> every few minutes.  They last longer when the osc is less thermally
> insulated from the shack, but this is unchanged by putting
> a big cap across Vcc (which is unchanging). Could this be the source of 
> the phase instability in the 137 kHz sigs? How about a large AC ripple on 
> the supply to the PA?
> 73 & tnx
> Joe
>
>
>
>
> On Wed, 5 Jun 2013, Michel Brunel wrote:
>
> > Good conditions tonight,
> >
> > 73,  Michel - f5wk
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137700Hz-1306050140.jpg
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