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Old March 10th 04, 07:51 PM
Cecil Moore
 
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Reg Edwards wrote:
Its the voltage parts of the antenna which do the radiating.

That is proved by cutting off the top part of the antenna and replacing it
with a top hat which has a much larger capacitance so it radiates the power
harder.


Reg, let's say we have an elevated antenna system where the radial system
and top hat system are identical and balanced. Energy flows back and
forth between the radials and top hat. Very little energy is radiated
from either the top hat or the radials since they are balanced. Virtually
all of the radiated energy comes from the high-current vertical portion
of the antenna.

Such antennas are described in Appendix II - Short Ground-Mounted Verticals
in _Building_and_Using_Baluns_and_Ununs_ by Jerry Sevick, w2fmi.
--
73, Cecil http://www.qsl.net/w5dxp



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Old March 10th 04, 07:59 PM
Reg Edwards
 
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Cec, who's Jerry Sevick. I don't seem to have a copy of his works around me
at present.
---
Reg.


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Old March 10th 04, 08:34 PM
Cecil Moore
 
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Reg Edwards wrote:
Cec, who's Jerry Sevick. I don't seem to have a copy of his works around me
at present.


He's accepted by most as *the* ham balun guru. Some disagree.
--
73, Cecil http://www.qsl.net/w5dxp



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Old March 10th 04, 10:57 PM
Walter Maxwell
 
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On Wed, 10 Mar 2004 14:34:38 -0600, Cecil Moore
wrote:

Reg Edwards wrote:
Cec, who's Jerry Sevick. I don't seem to have a copy of his works around me
at present.


He's accepted by most as *the* ham balun guru. Some disagree.


Yeah, I'm one who disagrees!

Walt, W2DU
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Old March 10th 04, 11:44 PM
Cecil Moore
 
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Walter Maxwell wrote:

Cecil Moore wrote:
He's accepted by most as *the* ham balun guru. Some disagree.


Yeah, I'm one who disagrees!


Well, wait until you find out exactly what the disagreement was.
I said a balanced set of elevated radials or a balanced top hat
doesn't radiate much RF. What do you say?
--
73, Cecil http://www.qsl.net/w5dxp



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Old March 10th 04, 11:51 PM
Wes Stewart
 
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On Wed, 10 Mar 2004 22:57:01 GMT, Walter Maxwell wrote:

|On Wed, 10 Mar 2004 14:34:38 -0600, Cecil Moore
|wrote:
|
|Reg Edwards wrote:
| Cec, who's Jerry Sevick. I don't seem to have a copy of his works around me
| at present.
|
|He's accepted by most as *the* ham balun guru. Some disagree.
|
|Yeah, I'm one who disagrees!

But he is certainly prolific. Can't pick up a magazine without
another same-o-same-o article. Latest in Feb. "High Frequency
Electronics."


Wes
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Old March 10th 04, 11:20 PM
Reg Edwards
 
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He's accepted by most as *the* ham balun guru. Some disagree.
======================

How can anybody make himself a guru about such a simple, inactive, mundane
device as a balun?

Now if it was a conjugate match!


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