[FoxHunt] Turnstile antennas for 2M

[Jay Hennigan]

On Wed, 14 Jan 2004, Kuon & Dale Hunt wrote:

> The standard turnstyle I saw used in Japan was a beer can
> with 4 SO-238 coax fittings around the circumference and
> one on the bottom for the feedline, all soldered to the can
> with the phasing lines inside.  The elements were attached to
> PL-259's that screwed on/off for transport.

Banana plugs/jacks could also work for the elements if you use a metallic
case.  I would think that if the feedline were connectorized at the case
you would want to insulate the braid from the case or use a 1:1 balun
inside the case.  I chose not to connectorize the feed at the case to keep
the parts count and cost down.  A full can of beer is probably about the
same cost as the plumbing fittings, but you get to enjoy the beer.  A
six-pack would get you enough material for an entire course including the
finish beacon.  :-)

I have another construction project on my home page that works better
for me than beer...

http://www.west.net/~jay/mrita.htm

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Jay Hennigan - CCIE #7880 - Network Administration - jay@west.net
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