Hi Eugene, Are you using a switch-mode power supply to feed the KAT500? If so, try a linear regulator supply or a battery instead.
Is your KAT500 bonded to your other station equipment and AC ground with a short, wide conductor? (not just the coax shields) Since you're not the original constructor of the KAT500, I would check inside the case to be sure that the case sections have the powder coat removed where circuit board standoffs and case section screws are placed. What kind of cable do you use to connect the KAT500 to your shack computer? One should NOT use a standard VGA cable as the manual makes clear. 73, Mike, K8CN ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com