Re: [amsat-bb] Dish

[Anthony Monteiro <aa2tx@xxxxxxxxx>]

Hi Ron,

A flat plate reflector ("dish") can indeed be used
as an antenna. A 1 wavelength per side square fed with
a dipole will get you about 8 dBi gain - not bad, but
not enough to receive AO-40. Unlike a parabolic reflector,
making a flat plate reflector bigger only marginally
increases the gain.

There are lots of interesting things you can do with a
flat plate reflector like make it really-really big and
feed it with a phased array but for AO-40, a parabolic
reflector is generally a better approach.

Tony AA2TX
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At 01:46 PM 7/24/02 -0700, Ronald A. Stunden wrote:

>Out of curiosity has anyone tried a flat plate dish?? I remember that we 
>went to af flat dish for the aircraft radar, But I can't really remember 
>why. Ron VE7YC
>
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