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Old April 17th 05, 09:46 PM
Michael Melland, W9WIS
 
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Hi Fred,

Yes.... sorry for not being more specific, radius. I can go out farther but
then it's up in my yard where I mow pretty low. The 5BTV is ~24 feet
tall.... I have heard this formula for radials before.... but, is it really
meant actual "physical" height of the radiator and traps or is it really
meant to be the theoretical electrical length (height) of the radiator ?


And... I got the antenna and mounting/radial system from DX Engineering.


Mike, W9WIS


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Old April 17th 05, 10:18 PM
Fred W4JLE
 
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The physical height is fine for a ground mounted vertical. With the DX
engineering kit you can put down a bunch of radials.

I was always too poor for all those nifty things. I normally use the lid off
of a 55 gallon drum.:)


"Michael Melland, W9WIS" wrote in message
...
Hi Fred,

Yes.... sorry for not being more specific, radius. I can go out farther

but
then it's up in my yard where I mow pretty low. The 5BTV is ~24 feet
tall.... I have heard this formula for radials before.... but, is it

really
meant actual "physical" height of the radiator and traps or is it really
meant to be the theoretical electrical length (height) of the radiator ?


And... I got the antenna and mounting/radial system from DX Engineering.


Mike, W9WIS




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Old April 17th 05, 11:37 PM
Bob Miller
 
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On Sun, 17 Apr 2005 15:46:52 -0500, "Michael Melland, W9WIS"
wrote:

Hi Fred,

Yes.... sorry for not being more specific, radius. I can go out farther but
then it's up in my yard where I mow pretty low. The 5BTV is ~24 feet
tall.... I have heard this formula for radials before.... but, is it really
meant actual "physical" height of the radiator and traps or is it really
meant to be the theoretical electrical length (height) of the radiator ?


From page 20.20 of my Arrl 2000 Handbook: "...a large number of
shorter radials offers a better ground system than a few longer ones.
For example, 8 radials of 1/8 wavelength are preferred over 4 radials
of 1/4 wavelength. If the physical height of the vertical is 1/8
wavelength, the radial wires should be of the same length and
dispersed uniformly from the base."

bob
k5qwg




And... I got the antenna and mounting/radial system from DX Engineering.


Mike, W9WIS


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Old April 18th 05, 12:15 AM
gb
 
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"Michael Melland, W9WIS" wrote in message
...
Hi Fred,

Yes.... sorry for not being more specific, radius. I can go out farther
but
then it's up in my yard where I mow pretty low. The 5BTV is ~24 feet
tall.... I have heard this formula for radials before.... but, is it
really
meant actual "physical" height of the radiator and traps or is it really
meant to be the theoretical electrical length (height) of the radiator ?

And... I got the antenna and mounting/radial system from DX Engineering.

Mike, W9WIS

Mike -

OK - that sounds like a great setup
I have had best luck with running at least 3 or more of the specified length
in the Hustler manual.
Longer does not seem to improve.

w9gb


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Old April 18th 05, 03:36 AM
Hal Rosser
 
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You can bury the radials using a chain saw, or edger, etc. Just slip wire
into slots in the ground.
And if you turn on the lawn sprinklers for a few minutes, you may see some
improvement.




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