Christina and I did the following tests. Walked around the area for 2 hours at different spots of the host site. Christina mentioned by her observation lets try the fence which is about 20 feet SW of the house and original location of the antenna. Using NO Pre-AMP, just the antenna and the laptop, we were picking up Flag W to Winslow E MCP indications (Not Controls). There were only a couple of dead spots but looked better. I placed the laptop on the ground and let is sit for 1 hour to test it. Error rate was down to 20% and most of the MCPs were coming in pretty good, better than on the roof.
Checked the PC and Swapped the SDR with two Pro97s (MCP and BCP) radios. Still not seeing anything.
We moved the main antenna at that spot close as possible (cable to short at the moment, the host is going to see if he can get more cable slack).
More to come as we work on this site a little more closely.