The K3S and K3 seem to survive operating in extreem climates. The Baker Island folk were reporting temperatures of over 100 F (c38 C) with high humidity. I haven't heard of any problems with the radios, but I'll ask people who were there when they come back.

When operating at field day this year, we had similar temperatures with low humidity. The front panel showed 49 C for a long time. While we were operating at 5 watts, rather than higher, I don't think that will affect the front panel very much. The front panel heat is mostly the digital electronics which should be similar regardless of the power output.

Certainly if you are installing in high temperatures/high humidity, an air conditioning unit can help with both. Small heaters can help with cold, but I think that is less of a problem. Good insulation will help greatly with temperature cycling by evening out the changes.

73 Bill AE6JV

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Bill Frantz        |"We used to quip that "password" is the most common
408-356-8506 | password. Now it's 'password1.' Who said users haven't
www.pwpconsult.com | learned anything about security?" -- Bruce Schneier

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