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Old 11-06-2007, 01:25 PM
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Cranky Crumudgeon
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Quote:
Originally Posted by ayelvington View Post
Can you share a quick link to a formula for those theoretical measurements? I've forgotten this part longer than I knew it. The dish does have quad arms and we have to rent a lift or special ladder to reach the LNBF assembly. ay
I always forget too,

but I think it's Focal length = (dish diameter)^2/(16 * (dish depth) )

or just use one of the computer programs or on line calculator, such as:

BJDISCALC2
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