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Re: focal point
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From: drdish@westend.com (Dr.Dish)
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Date: Wed, 15 May 96 21:27 MET DST
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From owner-sat-drdish@tags1.dn.net Wed May 15 15: 29:07 1996
>hi dr dish i want to ask u a question and i hope u will answer me.
>my question is :can u give me the fraction of the dish because i want to
>make a sattelite dish so i need this fraction to know the distance between
>the center of the dish and the feedhon?
>Huarir, UAE
Dr.Dish:
f = r ²
--------
4 c
which means: if you have a given dish depth of 25 cm and a diameter of 240cm
then it looks like this
f = 120 ²
------------ = 144cm
4 x 25
Dr.Dish (Christian Mass)
drdish@tv - the first european satellite info channel
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