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Old July 11th 03, 12:16 AM
box90d
 
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Default Flagpole antennas

Looking for suggestions for flagpole design for Florida Mobile Home Park
where flagpole OK, antennas not OK. Thought of the Diamond shaped flagpole
configuration as a (CAP) top-loaded vertical. Anybody tried this? Note, my
ground is probably terrible, and as a stealth antenna, radial (maybe 2) must
be installed after dark Looking to run about 100W.

TIA

--tm

WD4AON




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Old July 14th 03, 03:22 PM
Bob Miller
 
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On Thu, 10 Jul 2003 19:16:40 -0400, "box90d" wrote:

Looking for suggestions for flagpole design for Florida Mobile Home Park
where flagpole OK, antennas not OK. Thought of the Diamond shaped flagpole
configuration as a (CAP) top-loaded vertical. Anybody tried this? Note, my
ground is probably terrible, and as a stealth antenna, radial (maybe 2) must
be installed after dark Looking to run about 100W.

TIA

--tm

WD4AON




For an inexpensive flagpole setup, see http://force12inc.com/

Bob
k5qwg

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Old July 14th 03, 10:17 PM
WP20032
 
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Looking for suggestions for flagpole design for Florida Mobile Home Park
where flagpole OK, antennas not OK. Thought of the Diamond shaped flagpole
configuration as a (CAP) top-loaded vertical. Anybody tried this? Note, my
ground is probably terrible, and as a stealth antenna, radial (maybe 2) must
be installed after dark Looking to run about 100W.

TIA

How about a "Gotham" vertical. This was about 20 ft. of vertical radiator,
mounted on an insulator (often, the pipe was just placed on top of a coke
bottle). A coil connected from the bottom of the radiator to ground (either a
simple ground rod, or better with several radials). A tap was used to bring
the coil/radiator to resonance. Another tap was used near the ground end of
the coil to find about 50 ohms of match for the coax.

The last version of this antenna that I used was constructed from a flagpole
bought at Sears.

--Wayne
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