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Pringle's can feed?

Curious, since I didn't know if anyone had tried this .. anyone had any 
success in using a Pringle's can as an open ended waveguide feed for 2.4 
GHz?  Haven't done it yet because I still don't have a dish or a 
downconverter .. just curious .. I know the two-3-lb-coffee-can 
equivalent for 1.2 GHz is actually fairly directional, and have heard 
the Pringle's can does much the same for 2.4 GHz, so it would seem that 
one of those could illuminate a small dish quite nicely without 
overilluminating it too much, depending on mounting and construction, 
etc.  If nobody else does it, I may set one up just to see what I can 
get out of it -- who knows?  ;-)

Heard from a flight instructor:
"The only dumb question is the one you DID NOT ask, resulting in my 
going out and having to identify your bits and pieces in the midst of 
torn and twisted metal."

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