It's not clear to me how you correlate how warm something gets in the
microwave oven with how much loss it'll incur at the end of an HF
antenna. Maybe someone can explain this.

Roy Lewallen, W7EL

wrote:
I'd also add a glass of water in the microwave when you do
that...I'm not sure if they are still that way, but it used
to be bad for them to run with no load...IE: food...MK