[MLB-WIRELESS] finally a triumph on the northern front !
d_ashburner at hotmail.com
Wed May 2 12:20:37 EST 2007
> instantly the difference was observed even though we hadn't calculated
> the correct angle to place the canopy on the sattelite dish (we rather
> just adhoced it). practically immedietly the thing registered.
The antenna part of the canopy should be at the focal point of the dish
- that is just in front of the LNB mount ring.
The trick with that dish (offset feed) is that you should try to
boresight it - if you stand in front of it a few meters away and hold
out something round you have an assistant tilt the dish till it looks
round. Then you will have it tilted at the optimum angle. Now the
trick is to tilt it back the right amount so it points at the remote
antenna not at you! ( um, probably easier to measure the signal and
tweak it until you have the strongest signal )
Normally these dishes are pointing high in the sky, so the angel of
incident radiation is a lot "higher" then you would thing just looking
at the dish.
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