"Mike Kaliski" wrote in message
...

"Haines Brown" wrote in message
...
I'm sure a FAQ, but a search on line did not resolve my question.

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).

Most couplers are apparently capacitative. At 10 meters, for example,
would I gain much by going to a microstrip coupler instead (whatever
that is)?

How good a coupling can I expect with a through-glass coupler? It sounds
very lossy, but perhaps not.

What brands of couplers would you recommend, or what is a good source
for such couplers?

The effective 2M antennas (Antenna Specialists) accomplish the lossless fed
through because the radiator is voltage fed half wave and the interior
coupling unit has a hi--low Z transformer.
You could do the same at 10M by converting the 50 Ohm feed to a higher
impedance and then down converting outside. The downside is that this will
likely limit your bandwidth a bit.

Dale W4OP