Has anyone experienced the following problem with the ICOM 720A Xcvr, and have you found an easy fix (easy = other than sending it back to ICOM!): After the IC-720A has been turned on for about 10-15 minutes the receiver drops about thirty dB in sensitivity, so that the needle doesn't move and you have to max out the RF AND AF gain to hear anything. I find that turning the rig off and back on again clears the problem but only for a few seconds once the machine is warmed up. I also find that keying the transmitter in AM clears the problem, again for only a short time. I'm currently operating (or TRYING to operate) in Great Britain, so I do a lot more listening than transmitting; its possible I never noticed the problem before in CONUS because I was more active. Anyone familiar with this? I'd appreciate knowing a fix other than mailing back the box, which is difficult at best from over here. 73, WA6VCT (Andy)