Good points. I'll have to check if I'm set to US or not, I really don't know, had missed that discussion apparently. In the past I had to test channels as well for best results and had previously ended up on channel 9. However after extensive upgrades over time I had never retested this and in the meantime read that channel 1 is the least likely to suffer from microwave interference. So I tested 1 and it now worked find and also eliminated the interference I'd been experiencing from my microwave.