I'd appreciate some help troubleshooting a pronounced hitch or warble in the received tone, happening regularly about every 1.5 seconds. It occurs in cw, lsb and usb. Please have a listen - this is 10 sec CW plus 5 sec USB tuned to a carrier: http://n1eu.com/omni6_warble.mp3 Can anyone provide some helpful troubleshooting tips? Thanks & 73, Barry N1EU