Channel Master 75E Question

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BiggRedd

BiggRedd

Thread Starter
SatelliteGuys Family
Mar 6, 2010
36
0
South Texas
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

chapelrun

SatelliteGuys Pro
Pub Member / Supporter
Feb 12, 2008
962
12
Berryville, VA
That dish is KU band

Welcome to Satellite Guys !!!!:welcome

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

oldford

SatelliteGuys Pro
Pub Member / Supporter
Feb 6, 2007
431
6
Eastern Maine
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

Tron

SatelliteGuys Master
May 6, 2005
6,599
33
Metro New Orleans, LA
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).
 
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