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wrote in :

I gave a presentation on "How Ham Radio Can Help You in an Emergency"
to 70 Emergency Management types last week, and the windows in the
building which hosted the meeting were NOT open-able (so I "made do"
with an inside VHF antenna and didn't even try to demonstrate HF).

But in emergency/expedient situations, it would be really handy if one
could pass at HF, say, 100 watts of RF energy through a window (I
visualize some foil strips and an inductor or two to "tune out" the
capacitance) to an external antenna.

I've been told that the April, 1989, issue of Ham Radio magazine carried
an article "Easy antenna access for urban apartment dwellers" (for 15
meters) by Bryan Bergeron, NU1N, starting on page 18.

I'd sure like to read that article; can anyone send me a copy?
I do not have the article but one solution that was proposed and tried
worked great. Use tinfoin and rubber glue, cut the tin foil to fit the
glass. Apply rubber glue to hold the foil to each side of the glass,
Thickness of teh glass is not important. In my case I used the metal
frame of the glass to carry the gound signal through the window frame. I
then used an antenna tuner to adjust out the capacitor I just created.
Worked great, no drilling no running coax in and out so I can close the
window etc.

Allan
WB5QNG