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Old March 8th 11, 04:59 PM posted to rec.radio.amateur.antenna
JIMMIE JIMMIE is offline
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First recorded activity by RadioBanter: Jul 2006
Posts: 625
Default Trap Vertical Antenna Questions

On Mar 6, 12:24*pm, ka7niq wrote:
Cecil Moore;735465 Wrote: On Mar 5, 9:25*am, ka7niq wrote:-
I got to thinking WHY not take a hustler vertical
with only ONE *Tuned "radial" for each band ...-


You are trusting that each radial will be resonant on only one band
akin to a fan vertical antenna. What may happen, for instance, is that
the 40m radial may accept an appreciable amount of energy on 15m and
direct the 15m signal up at a high take-off-angle - less than optimal
for 15m operation. Other interactions are possible, e.g. 28MHz/4MHz=7,
18.14MHz/3.6MHz=5, etc. Any vertical radial resonant at 3/4WL, 5/4WL,
7/4WL, etc. will have a suboptimal effect on the take-off-angle.
--
73, Cecil, w5dxp.com


I never considered this Cecil. Would you think it better to use a wire
trap dipole instead of the Hustler 4BTV
and hang it vertical in the tree ?

--
ka7niq


My experience with the Hustler 4BTV hasn't been good. Over two hamfest
I bought 4 of them, lucky for me I was only buying then for the tubing
and mount and paid around $10 each for them. I dont think any of them
had a trap that wasnt bad.

Jimmie