[Poltergeist]

I have a Fortec Mercury II with a 36" Globecast elliptical dish. The signal strenth is about 77% and quality is about 65%. The signal level and quality will both crash to about 0% to 4% and stay there about a second or two and then pop right back up. This repeats about every 5 to 30 seconds. I am pointed at 97.0 West. Channels work except when level crashes they break-up. Some days seem worse than others but does not depend on weather. Not a cloud in the sky tonight and the receiver is unwatchable. No wind either and dish is firmly mounted.

I tried optimizing dish pointing, actually took a TV to the roof, tweaked everything, got a couple percent out of it. No improvement for this problem.

I tried factry reset, made sure I didn't have transponder 12152. No improvement.

I don't know what to try next. Please help. Thank you.