[UK-CONTEST] Aircraft reflections -more

[Rob Harrison]

Hi,

There's another one more recently, where the author used GB3ANG, I think, 
and showed some waterfall diagrams in the article. Whether that will help or 
not I'm not sure, but worth a look. Sorry I can't remember the year, but 
it's in the 2000's.

Bob G8HGN

----- Original Message ----- 
From: "Clive Whelan" <clive at gw3njw.net>
To: "UK Contest Reflector" <uk-contest at contesting.com>
Sent: Monday, June 11, 2012 12:07 AM
Subject: [UK-CONTEST] Aircraft reflections -more


> Please excuse this way OT question, but it does sort of relate to some
> stuff that was exchanged here a while back about aircraft reflections on
> VHF.
>
> It will probably take a G3 to remember this, but probably in the '60s
> there was an article in the Bulletin as was, which studied aircraft
> refelctions from a 2m beacon, and offered a mathematical proof, that the
> minimum of the chuff chuff effect occurred when source and aircraft were
> on the periphery of a common ellipse. This matters to a number of us (
> bored contesters !) who are studying Doppler aircraft reflections in
> WSPR mode on 6m, where the Doppler minimum also corresponds to the
> minimum observed chuff chuff amplitude.
>
> I'd really like to access that original article if anyone has a
> recollection of it
>
> 73
>
>
> Clive
> GW3NJW
>
> -- 
> ( de GW3NJW )
>
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