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Old June 20th 06, 08:37 PM posted to rec.radio.amateur.antenna
Rob Roschewsk
 
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Default 5/8 wave for 20 meters

Yea that's what I was expecting you to say. I can remember seeing
descriptions of this "as if the ground plane is folded down around the coax"

I think I might try this ;-)

Thanks again all!

de ka2pbt


Cecil Moore wrote:
John Popelish wrote:
Cecil Moore wrote:
*******************+ ********************+
| ====================+========
1/4WL +--------------------------------- coax
| ====================+========
*******************+ ********************+


I don't understand how this would work.


Now that you mention it, neither do I. I just copied it from
the 1993 ARRL Handbook, Fig. 3, on page 14-4. I do know how it
works when feeding a balanced antenna. Let me redraw it with
one that I know works.

*******************+ +******************** choke
| +=================================
1/4WL +--------------------------------- coax
| +=================================
*******************+ +******************** choke

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Old June 20th 06, 11:39 PM posted to rec.radio.amateur.antenna
John Popelish
 
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Default 5/8 wave for 20 meters

Cecil Moore wrote:
John Popelish wrote:

(snip)
I don't understand how this would work.



Now that you mention it, neither do I. I just copied it from
the 1993 ARRL Handbook, Fig. 3, on page 14-4. I do know how it
works when feeding a balanced antenna. Let me redraw it with
one that I know works.

*******************+ +******************** choke
| +=================================
1/4WL +--------------------------------- coax
| +=================================
*******************+ +******************** choke


That is what i was trying to describe, and makes sense to me.
Thanks for drawing it.
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Old June 21st 06, 02:08 AM posted to rec.radio.amateur.antenna
Bill Turner
 
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Default 5/8 wave for 20 meters

ORIGINAL MESSAGE:

On Tue, 20 Jun 2006 11:52:32 +0000, Rob Roschewsk
wrote:

If I want something made of wire, and omni directional what would be my
best bet? Inverted-V ?


*********** REPLY SEPARATOR ***********

An inverted vee with the apex angle at about 90 degrees is almost
perfectly omnidirectional.

Bill, W6WRT

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