I have the IC-735 working flawless since new. (yea I don't buy a lot of rigs..) Now all of a sudden at about 14.304 the receive cuts way Down. Not even sure it is receiving. Except as I go up in frequency after that it starts popping in and out rapidly. The higher the frequency the faster the speed of the in and out cuts. After going around the other bands and finding no other trouble went back and now the cut out is about 14.320. It seems to drift higher. Never heard anything like this before. And it seems to only happen on 20 meters range. no other bands. The antennas I use all check out and it actually will transmit in that range. But can't receive. Any ideas??