I am hoping when the switch over is complete things mite improve although in the NW com7/8 is not due to move. I think its something to do with there being a mix of HD and SD on the same mux but have no way of proving it. It could also be due to transmission power the other muxes are transmitted at higher power 170KW vs 51KW. I doubt it because I have tried various tv amps with no success.