Re: [amsat-bb] Re: AIDC 3733 3' BBQ Dish

["Greg D." <ko6th_greg@xxxxxxxxxxx>]

>>Along the same lines: How does one figure the focal point of the offset
>>fed dishes?
>
>The best reference on this topic that I know of is:
>
>QEX Dec 1995
>"Measurements and Calculation for an Offset Parabolic Reflector"
>by Paul Wade N1BWT
>

... or take the emperical approach:  cover the dish with
aluminum foil and use the sun.  Watch your fingers, as the focus
gets mighty warm.

I used this technique with my Grill.  See the bottom picture at:
http://www.jps.net/gregd/hamsite.htm

Greg  KO6TH

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