|[AMRadio] new antenna and matchbox a bust.|
k4kyv at charter.net
Tue Jan 30 18:07:26 EST 2007
I think I now get it. You are using the RG-214 as feedthrough through the
window. That wouldn't be a problem if you were at a current loop, which
makes it a lo-z feedpoint at the end of the open wire line. But your
arrangement is a high-z with a lot of reactance. Try stripping the shield
off the coax, and slip the bare centre-conductor through the window, so that
it simply serves as a feedthrough insulator.
You still need to get away from the 90-ft total of feeder + antenna leg.
That's about the worst possible length to feed unless you have a tuner with
extremely wide range, probably beyond the capabilities of the matchbox.
I used to pass open wire line through a window by substituting one of the
window panes with a sheet of plexiglas. Then I could drill holes in the
plastic window pane and pass the wire right through. Save the glass pane so
you can put it back in, if sometime in the future you wish to remove the
antenna from that location.
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