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Old May 28th 09, 07:57 PM posted to rec.radio.amateur.antenna
Jerry[_5_] Jerry[_5_] is offline
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First recorded activity by RadioBanter: Jun 2008
Posts: 133
Default What's the Dealio with the J-pole?


"Bob D." wrote in message
...
I decided to install a 2m FM rig in my garage to stay in touch with the
local repeaters while working on the car. I want a quick and dirty homebrew
antenna at the roof line. I know the J-pole is a popular 2m antenna, but
why??? The J-pole is basically a half wave antenna fed at the end, right?
At 2m you are only 19 inches away from the 50 ohm feed point (a classic
dipole), so why not just loop the coax into the middle and forget the
matching stub? Am I missing something?

If I do this, would a clip on ferrite at the feed point make a good
choke-balun?

--
Bob D. ND9B



Ho Bib

I have used the ferrite clip-on beads for 2 meter antennas. They work
well for me. You will be able to test them by assembling your simple
antenna and see how warm they get after transmitting.
Keep the coax perpendicular to the dipole, dont "loop" it back parallel to
the dipole.

Jerry KD6JDJ