On Sun, 05 Jul 2020 10:18:00 -0700, Jeff Liebermann wrote:

Take a small sample of the tinted plastic and put it in a microwave
oven. Cook it for maybe 15 seconds. If it's warm, it's absorbing RF
and probably unsuitable for covering an antenna (radome).

You should always do this with a companion glass of water.
Microwave ovens do not like running without something "in the box"
to act as a dummy load in to which to dump the power.

Jonesy
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