WZPX, I'm sorry, but as chief engineer at WZPX, there are a few points I need to make.
The problem you have is due to what I consider a channel assignment screw up at the FCC.
My analog channel 43 has been on the air for 7 years, long before the DTV sign on, and in effect, I do not interfere with them they interfere with me!
My digital channel is actually operating at slightly reduced power, and the interference level with Detroit will never get any better. Again this assignment was made by the FCC not WZPX and I am just as prone to their interference as they are to mine.
My DTV has been on the air for over two year and the stations in Detroit could have measured my signal levels and requested either a channel reassignment of other remedies had they wanted.
The transition from analog to digital is not easy for any of us, either viewers or operators.
I understand your investment in equipment and your desire for perfect pictures, however we as broadcasters, have a considerable investment in the technology also, and remember, the DTV assignments were for the most part given to us and not requested so until the analog signals are turned off, these problem will only get worse, not better.
My signals, are checked for frequency accuracy monthly, and my power is calibrated semi annually.
Please do not blame my station fr the interference, put the blame on the source..... our regulators in Washington, who made these channel assignments.
Dick Castanie CE
WZPX TV 43 DTV firstname.lastname@example.org