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P3 SVGA external monitor freezes - RFI?

Posted by mike on Nov 05, 2014; 5:32pm
URL: http://elecraft.85.s1.nabble.com/P3-SVGA-external-monitor-freezes-RFI-tp7594411.html

When using KPA500 my external monitor (and the P3 display) often freezes, sometimes up to 5 seconds, after I transmit. With the external display disabled, the P3 does not freeze (and incidentally it refreshes much faster without the ext monitor enabled.) I also notice a slight flickering of the monitor screen while transmitting. I take this to be a RFI problem. I have added four snap on ferrite beads on each end of the VGA cable. The monitor is as far away from the amp and feedlines as I can get it and all equipment K3, P3, KPA500, KAT500 are bonded to a ground bus. This is not unique to this monitor as it happened with a different smaller monitor I used before.

This has always been a problem, and I would like to eliminate it as it is very disruptive to is usefulness in finding a clear spot to break through a pileup. Not sure what else to do. Has anyone else had this issue?

 ..mike  AI6II