[UK-CONTEST] Aircraft reflections -more

[Clive Whelan]

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 )