Quote:
Originally Posted by mreaves53
My dish is a 10' mesh with a ring on the back and a typical C-band actuator. Before I added the co-rotator, I measured the dish. I measured the dish to be 119" and depth to be 20.65". The FL calculates to be 42.9". It is not warped, but it is possibly out of align. Monday I measured the FL and found it to be way off for my dish measurements. I can not get the struts to allow the feed horn to be moved that far away from the center. I set the FD at 0.36. Could I move the feed horn further out in the scalar ring to increase the FL? As best as I can measure the feed horn is in the center of the dish and is parallel to the dish. When I did this Monday my quality numbers went up an average of 15 pts across the board.
Where can I find a good, easy to understand diagram of the angles I need to check.
I certainly appreciate all of your help. This is a mystery that is baffling me. Where I live no one close by works on C-band equipment, so I am left to having to learn how to do it myself. |
Ok setting focal length. Forget the measurements and setup the dvb receiver and a small tv next to the dish. Now tryint your best not to block the dish slowly move the feedhorn in and out of the scalar ring until you peak signal. That shoudl solve that. I know not very scientific but it works
Next on the list would be skew. I would set my dish to true south sat and pick a channel then peak by rotating the feedhorn in the scalar ring. Oh yes set the skew to 0 in the 922. This should get you reasonably close in skew and focal length.
Your H and V channels should be 90 degrees apart in skew. So if you have V channels on sat A set at 0 the H channels should be either 90 or -90. There should be a 90 degree difference between the 2. As to a site for setting up the dish look at the signature line on Wejones posts. He has a bunch of stuff online concerning dishes and most likely has something or at least a link to something.