[TowerTalk] Flagpoles as a Stealth Antenna

[Jim Nipper]

Surely this unsigned reply is not a serious (or helpful?) response to
this gentleman's questions about a possible HAM antenna.  I doubt he
needed the engineering details of a 12-30 INCH flagpole, or the base
requirements to keep the mammouth structure in the air.   The gentleman
was asking about a SIMPLE VERTICAL ANTENNA !!!!!!   I would this that if
this gentleman could erect a THIRTY INCH DIAMMETER flagpole in his yard,
he could easily put up a 15inch width TOWER, and likely would not be
asking questions about a VERTICAL !!!!!!!



73 de Jim K4PYT


Tower2sell@aol.com wrote:
> 
> Flagpoles are a hot item in the commercial world and are quite pricey for the
> HAM radio. The commercial operators use a fiberglass radome on top of a steel
> pole (tapered or pipe). Normally there are three or more flat panel antennas.
> Some arrangements have them at 0, 120, 240 and another arrangement is to
> stack them vertically. They normally do not use a standard flagpole because
> the diameter is too small. The flagpoles they use range in diameter from
> about 12" to 30".
> 
> On top of a flag pole is the flagpole truck and ball. A flagpole truck is a
> set of bearings that swings around with the flag and keeps it from wraping
> around the pole. The largest "normal" truck fits a 7.5" pole with maybe a 12"
> truck being available. The larger diameters require a custom made truck
> assembly.
> 
> Now if all you need to do is mount a whip type antenna, you could use a
> standard fiberglass flagpole and "hang" it from the top inside the pole. The
> flagpole foundations are about 10% of the flagpole and one could come in
> underground and up the pole. Leave some extra cable in the pole so that you
> can pull the antenna all the way out the top. Now for the ball and truck
> assembly - find one that attaches with set screws instead on the convential
> 1-1/4" pipe thread.
> 
> No one will know where your antenna is and the exercise pogram to service the
> antenna will keep you in top physical shape climbing the slick flagpole (the
> rope should help some).
> 
> Tower2sell@aol.com
> 
> In a message dated Wed, 20 Dec 2000 10:25:18 AM Eastern Standard Time,
> Richard Thorne <rthorne@tcac.net> writes:
> 
> << Hello Group:
> 
> A friend mentioned and idea for a stealth antenna that got me to
> thinking.
> 
> Anyone out there using a flagpole as a vertical?  If so is it
> metal/fiberglass?  How do you feed it.
> 
> Looking for multi band ideas, say 10 through 40.
> 
> Thanks in advance.
> 
> --
> 73,
> 
> Richard Thorne
> ARS N5ZC (ex KA2DSY, N2BHP, WB5M)
> Remote Control Airplanes:  AMA# 657062
> http://www.tcac.net/~rthorne/
> 
> --
> FAQ on WWW:               http://www.contesting.com/FAQ/towertalk
> Submissions:              towertalk@contesting.com
> Administrative requests:  towertalk-REQUEST@contesting.com
> Problems:                 owner-towertalk@contesting.com
> 
>  >>
> 
> --
> FAQ on WWW:               http://www.contesting.com/FAQ/towertalk
> Submissions:              towertalk@contesting.com
> Administrative requests:  towertalk-REQUEST@contesting.com
> Problems:                 owner-towertalk@contesting.com

--
FAQ on WWW:               http://www.contesting.com/FAQ/towertalk
Submissions:              towertalk@contesting.com
Administrative requests:  towertalk-REQUEST@contesting.com
Problems:                 owner-towertalk@contesting.com