Haines Brown wrote:
I need to feed my coax (QRP, 10 meters) out through a pane of glass, and
for that I need a through-glass coax coupler (this is not an automotive,
but a home window situation).

You are probably not going to like the size of the
capacitive plates necessary for 10m operation. I
have a small strip of plexiglas installed in/under
my window where my wires enter and exit.
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73, Cecil http://www.w5dxp.com