I have a Winegard HD 7696P with a winegard AP 8700 Amp on the mast at this location
http://www.tvfool.com/?option=com_wr...40335f7ae162bb the antenna is 26 feet off the ground and is pointed at 150 degrees magnetic. The UHF channels on my report come in well, but I have intermittant problems with high VHF channels 7 and 11 (virtual 13). I am using RG6 and have a 75 foot run from the AMP to the TV. The problem is worse in the evenings and AM. I have tried my setup both with and without the AMP and have no change. The signal on channel 7 will go from no signal to 90%