[Elecraft] Two KAT 500s Intermittent High SWR

[Jim Brown]

On 7/19/2025 7:29 PM, Jack Brindle via Elecraft wrote:
> Sorry, but I have to ask this. If indeed this is the case, why does it not apply to open wire, where water has no effect on the line and thus there is no need to retune?

At least 30 years ago, one of the ARRL Antenna Compendiums published 
excellent lab work  by Wes Stewat, N7WS, showing that the attenuation of 
window line increased significantly when it was wet.

73, Jim K9YC