[ARDF] Collapsible pole verticals

[Marvin Johnston]

The poles you are looking for are called crappie poles, and are
extentable fishing poles. They are made of fibreglass and collapse to
about 48" or so. Another friend of mine made up five mounts to stick in
the ground that will hold the extended poles vertical. Basically, they
are about a 2" pipe about 16" long with a piece of sharpened ribar (sp?)
welded to one end, and two pieces of 1/2" pipe welded soas to provide a
"step" for getting it into the ground.

The best price *I've* found ... just a minute ago actually :) ... for
the 20' Crappie Poles is $161.80 plus shipping for a case of 20 at:

http://www.homestead.com/costsavingsplus/

under fishing supplies.

Marvin, KE6HTS



"Kenneth E. Harker" wrote:
> 
>      I'm looking for something with which to make an 80 meter vertical
> transmitter antenna like that used at the 2003 IARU Region II ARDF
> Championship.  The best description I can find for building one of these
> is a two-sentence description at: http://members.aol.com/joemoell/80intro.html.
> Does anyone know of a more complete antenna construction article available
> anywhere?  Something that describes how to physically build the transformer,
> what wire guages should be used, how to make tuning adjustments, etc?
> 
>      I know I'll need a collapsible, non-conductive mast to put the vertical
> wire in the air.  I have found three sources:
> 
> * My local sporting goods chain, Academy Sports, sells collapsible fishing
>   poles up to 16' in length that break down to comething like 36" collapsed.
>   $22.
> 
> * World Radio Magazine sells an "SD-20 Antenna Support."  Basically a
>   carbon fiber collapsible pole that is 20' extended, 47" collapsed.  $25.
>   http://www.wr6wr.com/
> 
> * Kanga US sells their DK9SQ Fiberglass Antenna Support pole that is 33'
>   extended, 46" collapsed.  $106.
>   http://www.bright.net/~kanga/kanga/dk9sq.htm
> 
> Since the only description of the antenna construction I have uses a 26'
> vertical wire, and I'm sure the transformer winding is dependent on that
> length, I guess I need to look for a 27' to 28' pole.  But I don't want to
> spend $106 per pole.  Can anyone recommend a mail-order source?
> 
> --
> ----------------------------------------------------------------------------
> Kenneth E. Harker      "Vox Clamantis in Deserto"      kharker at cs.utexas.edu
> University of Texas at Austin                   Amateur Radio Callsign: WM5R
> Department of the Computer Sciences          Central Texas DX & Contest Club
> Taylor Hall TAY 2.124                         Maintainer of Linux on Laptops
> Austin, TX 78712-1188 USA            http://www.cs.utexas.edu/users/kharker/
> ----------------------------------------------------------------------------
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