I finally found the agc flaw in my radio.... a bad 4 kHz filter that shorts when it gets warmed up good. Anyone havd a line on replacement filters ? Regards, Mike, W9WIS -- Michael Melland, W9WIS Winneconne, Wisconsin USA EN54pc qrp-l #1656 - qrparci # 9875 - iparc #252 ars #1075 - http://www.qsl.net/w9wis