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Message-ID: <003001cca788$4e00ae00$4001a8c0@lark>
From: "Alan Melia" <alan.melia@btinternet.com>
To: <rsgb_lf_group@blacksheep.org>
References: <005201cca77a$2657aab0$8d01a8c0@JAYDELL>
Date: Sun, 20 Nov 2011 13:27:39 -0000
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Subject: LF: Re: T/A
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Hi Jay and Stefan, nice plot Jay
Yes you will get a signals at later than local dawn at the tx. The signal
should propagate provided the 1st hop point (~ 1200km west ) is in darkness
at about 90km altitude. As a bonus you often get a short "enhanced" period
at this time. I think that is caused by the local dawn at the TX end
suppressing the higher hop modes as the D-layer starts to form. I have seen
signal from Joe VO1NA which actually crossed in one hop, rather than the
normal 2 hops. The shadow at 90km was at mid-Atlantic at the time. the
strength wasn't as good as the best full darkness path signals but it popped
up fully readable for about 15 to 20 mins.

Alan
G3NYK

----- Original Message ----- 
From: <jrusgrove@comcast.net>
To: <rsgb_lf_group@blacksheep.org>
Sent: Sunday, November 20, 2011 11:47 AM
Subject: LF: T/A


> Stefan
>
> Last glimpse of your signal just after 0800Z. Believe your local sunrise
to
> be 0645Z ...
>
> Jay W1VD  WD2XNS  WE2XGR/2
>