[Elecraft] KPA100 "New Shield" & still getting RF

Sat Jul 26 20:36:00 2003

I've seen the OVP (Over Voltage Protection) in some power supplies respond 
to RF in the shack just as though they'd really seen a high DC voltage on 
their output line... shutting down as soon at the key was closed.

Not that this is THE problem here, but it's a possibility.

73,

Tom  N0SS

At 03:11 PM 7/26/03, Bob Nielsen wrote:
>I saw a case (with another radio) where the power supply shut down
>under high VSWR.  It turned out that the grounds were pretty hot with
>r.f. energy (it reminded me of when I used to get a slight r.f. burn
>when I close-talked my D104 and it touched my upper lip).
>
>Making sure you have a good shack ground and putting a current balun on
>the feed line (at the antenna) should help.
>
>73,
>Bob, N7XY
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