I'm located in central TX, fixed 12 foot dish locked on 125W. For a week or so now I've been losing signal around 11:30ish and/or around 2pm. When I'm able to check the receiver at the same time I notice that my C/N margin is fluctuating back and forth between 0 dB and 5 dB (where it normally sits). Because this seems to happen around the same time of day I'm wondering if this might have something to do with small fluctuations in the satellite arc and some limbs on one side or the other that interfere for a few mins a day. Logical explanation? If so, is it possible to isolate whether the north or south side is the offending party? This is still kind of magic to me, so any help is greatly appreciated...Thanks!