CM 1.2m beats Fortec 1.8m on C band

[PopcornNMore]

Offset Feedhorn

This is the offset feedhorn designed to match the CM 1.2m dish.

 

[Anole]

Yes, there are some offset feedhorns that aren't a circle.
But, generally, I thought they were on non-circular dishes.
Primestar feedhorns for the 84e (?) look circular when viewed end-on, but have their sides trimmed back to "see" the elliptical dish.
Some Dish FSS feedhorns are quite oval, and I assume for the same reason.

The satellite sees the elliptical dish as almost a perfect circle (because of the 22 degree+ or -), but the feedhorn (not looking directly at the center of the offset dish) sees it as an ellipse.

Off hand, it seems to me that if the bird sees a dish as a circle, then the reflected signal looks to the LNB as a circle, too.