Channel Master 75E Question

[BiggRedd]

I have the Starband/DN version of the CM75E. Since I have a sub to neither anymore, I pulled off the Tx/Rx SB device along with the two DN LNBF's(119 & 110) and borrowed two working KU LNBF's from a friend to use on this dish to receive 1 or 2 satellites.

My problem: What is the focal point length? The arm is 18.75" overall and from the edge of the dish to the end is 16". I have tried just about everything to no avail.

I know lots of folks have converted this dish and claim it works well.

I just need a very, very simple straight forward example and/or explanation.

I don't have enough days left in my life for much more frustration!
Thanks very much!

 

[chapelrun]

That dish is KU band

Welcome to Satellite Guys !!!!

The dish you have it already KU band - - - all you need to do is just connect the receive portion and leave the Transmit disconnected.

These are great dishes and work well for FTA!

 

[oldford]

Use the Starband LNB and feed, note that the feedhorn is shaped to illuminate the entire dish, a regular Ku LNB is designed for a round dish and will either over or under illuminate an oval dish.

GL,Eric

 

[Tron]

I agree with Oldford, and if you don't want the original LNB, at least keep the original feedhorn. You should be able to attach any C-120-flanged LNB to the feed (might have to remove a waveguide first).