On Mon, 9 Feb 2004 23:56:36 +0000 (UTC), Luddite
wrote:


here is a new picture

http://pages.ripco.net/~a2k/parabolic-feed.jpg

There is only the one element fed by a 3 foot pigtail of 9913.
the plan was to change it to rg-174 or .141 hardline and attach
a USB wifi device to the rear,and add the correct sized feed.
or I might settle for less than its rated 21db gain.

Hi OM,

It is a dual element feed. You have what appear to be two quarterwave
slots, one wavelength apart (probably for better position
tolerancing). What you offer above actually explains nothing. Change
out 9913 to what end? Even RG-58 over that length would serve.
Attach a USB WiFi for what? To transceive?

Why don't you just try it and see what happens? Nothing gonna break
and if it works that's the end of it. If it doesn't work, you have
more problems than a 4% frequency shift.

73's
Richard Clark, KB7QHC