[Doug]

Originally Posted by bojan

It could be the 7 and 9 are strong and amp is clipping the signal (OFDM modulation requires very linear amplifiers, see here: http://en.wikipedia.org/wiki/Orthogo...n_multiplexing)
Try without amp.

Without the Amp, I get poor reception at times, usually when something good is screening; but yeah at least the stations do get through without the Amp, just thaty sometimes they look like they came via the kitchen blender!

Thanks for that input. You might be right it seems to be about the only logical scenario. Unfortunately the amp I have is fixed at 19db gain. Perhaps I need to swap it for a lower gain indoor booster. In any event it isa no good to me as is.
cheers