Thread: Coax and Dipole
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Old August 15th 04, 03:04 PM
Cecil Moore
 
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Doug Birky wrote:
My question is can the coax be tie-straped to the short end
of the dipole antenna wire and run back with it toward the houes?


My comments assume this is a transmitting antenna.

Doing such will essentially short out the balun - not a good idea
and virtually guaranteeing common-mode problems. It would essentially
turn the antenna into a horizontal sleeve antenna which is unbalanced.

Even with the coax hanging down, this antenna will be a poor
performer as the SWR on the coax will be high as reported by
EZNEC. 40m 5:1, 30m 9:1, 20m 14:1, 17m 8:1, 15m 15:1, 12m 22:1,
10m 21:1. The free demo version of EZNEC is available from

http://www.eznec.com

My advice is to feed this antenna with 300 ohm balanced feedline
through a 1:1 choke at the antenna tuner.
--
73, Cecil http://www.qsl.net/w5dxp



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