I am a programmer, and the fact that the radio has a built in RPi was the point that sold it to me (together with the bands covered, features, power level, and portability). I do have an antenna tuner and analyzer, so SWR is under control.
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Thank you for all the suggestions. I guess I should start on the thermal control side first. Replacing the mica insulator, and adding a temperature sensor, seem like easy and useful firsts.
