Re: LF: G3XDV IO91VT M0DSZ IO82LS Novel s/n / time 136/op32

[LineOne <dhchurch@lineone.net>]

There was an extremely pronounced collapse in s/n for a specific time, I 
hadn't spotted anything quite so large before. It's a shame there 
weren't more stations transmitting on Opera or WSPR.
Hugh, M0DSZ.

On 16/07/2016 17:11, Mike Dennison wrote:
> Well, I think the clue is in the phrase "signal to noise". The noise
> level is much greater after dark than in the daytime, especially at
> this time of year, so for the same signal strength the S/N is poorer
> at night.
>
> Mike, G3XDV
> ===========
>
> >   G3XDV IO91VT  M0DSZ IO82LS  Novel s/n / time  136k
> >
> > Signal is  stronger  in the Day  than the  night  , over  220k  path
> >
> > Assume its  sky wave  subtracting  from the  day time level ?
> >
> > 73-G,
> >
> >
> >
> >       2016-07-16 07:31:38  G3XDV IO91VT  M0DSZ IO82LS 220 136 3
> >       Op32_||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
> >       ||||||||||||||||||||||_3dB 2016-07-16 05:51:49  G3XDV IO91VT
> >       M0DSZ IO82LS 220 136 2
> >       Op32_||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
> >       ||||||||||||||||||||_2dB 2016-07-16 04:12:01     G3XDV IO91VT
> >       M0DSZ IO82LS 220 136 -0
> >       Op32_||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
> >       ||||||||||||||||_0dB 2016-07-16 02:32:13 G3XDV IO91VT M0DSZ
> >       IO82LS 220 136 -8
> >       Op32_||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
> >       _~8dB 2016-07-16 00:52:25 G3XDV IO91VT M0DSZ IO82LS 220 136 -15
> >       Op32_||||||||||||||||||||||||||||||||||||||||||||||_~15dB
> >       2016-07-15 23:12:36 G3XDV IO91VT M0DSZ IO82LS 220 136 -16
> >       Op32_||||||||||||||||||||||||||||||||||||||||||||_~16dB
> >       2016-07-15 21:32:48 G3XDV IO91VT M0DSZ IO82LS 220 136 -15
> >       Op32_||||||||||||||||||||||||||||||||||||||||||||||_~15dB
> >       2016-07-15 19:51:29 G3XDV IO91VT M0DSZ IO82LS 220 136 -18
> >       Op32_||||||||||||||||||||||||||||||||||||||||_~18dB 2016-07-15
> >       18:08:26 G3XDV IO91VT M0DSZ IO82LS 220 136 -11
> >       Op32_||||||||||||||||||||||||||||||||||||||||||||||||||||||_~11dB
> >       
> >
> >
> >        G3XDV SM2DJK 2200m OPERA 1781 km 00:56:47
> >        G3XDV SP5XSB 2200m OPERA 1445 km 23:16:59
> >        G3XDV PA7EY 2200m OPERA 347 km 07:31:37
> >
> >
> >
> >       2016-07-15 21:32:47  G3XDV IO91VT  F5WK     JN18HP 406 136 -24
> >       Op32_||||||||||||||||||||||||||||_~24dB 2016-07-15 19:51:28
> >       G3XDV IO91VT     F5WK     JN18HP 406 136 -16
> >       Op32_||||||||||||||||||||||||||||||||||||||||||_~17dB 2016-07-15
> >       18:08:26 G3XDV IO91VT F5WK     JN18HP 406 136 -18
> >       Op32_||||||||||||||||||||||||||||||||||||||_~19dB 2016-07-16
> >       02:32:12 G3XDV IO91VT EA5DOM     IM98XN 1.473 136 -37 Op32__~38dB
> >       
> >
> >
> >
> >
> > -----
> > No virus found in this message.
> > Checked by AVG - www.avg.com
> > Version: 2016.0.7688 / Virus Database: 4627/12623 - Release Date:
> > 07/15/16