Satellite signal reflection on an offset diagram?

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jogon64

SatelliteGuys Pro
Original poster
Sep 18, 2009
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Northern Mexico
Is there some diagram in which I could understand better how signals are bounced off an offset dish? I´m fixing to start a multi lnb project on a 5 foot offset having a c band (@99W) as main lnb and adding as many kus as possible. A diagram might help me understand things a bit better. I´m hoping to get 79,87,97,101,125 in ku and perhaps 95 in C. Could that be possible without motorizing? Thanks.
 
seat of the pants:

... I´m fixing to start a multi lnb project on a 5 foot offset having a c band (@99W) as main lnb and adding as many kus as possible.
...I´m hoping to get 79,87,97,101,125 in ku and perhaps 95 in C.
You might look at Linuxman's thread below for encouragement.
It's pretty long, so skim over it and look at the pictures, to get the idea.

Without doing the math, let me make the following suggestions:
- 4° separation of the two C-band birds, might be too tight to get two LNBfs in there
- 97° and 101° Ku, might be too close to the central 99° C-band LNBf
- 79° and 125° are probably too far from the central LNBf, but I'd try it

Linuxman and entire arc on 6' Prodelin:
http://www.satelliteguys.us/free-ai...st-way-receive-whole-ku-arc-fixed-dishes.html

And if you want to do the calculations ...
MJflash and his math to put two LNBs on a single dish:
http://www.satelliteguys.us/free-air-fta-discussion/89049-offset-lnbs-theory-practice.html
 
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