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

To: <[email protected]>
Subject: Re: LF: G3XDV IO91VT M0DSZ IO82LS Novel s/n / time 136/op32
From: "Graham" <[email protected]>
Date: Sat, 16 Jul 2016 18:16:51 +0100
Importance: Normal
In-reply-to: <[email protected]>
References: <250DC95D596441FEA4029B7265966ACD@AGB> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
Could be Mike.

that's the problem with measuring s/n , could be noise up or signal down ... + 20 dB lift in the noise over night ?

The % fade would give a clue, if its higher and quite random , may be noise , if its missing sections , qsb ?
but that  would  only be  known from the  plot at M0DSZ  local  copy

Other than that , would be a narrow band carrier level -S meter check , but that
would need  either setting  up  or watching ..

73-G,


--------------------------------------------------
From: "Mike Dennison" <[email protected]>
Sent: Saturday, July 16, 2016 5:11 PM
To: <[email protected]>
Subject: Re: LF: G3XDV IO91VT  M0DSZ IO82LS  Novel s/n / time  136/op32

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






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