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supplies.com

 

The J Pole Portable Antenna Stand

By N6JSX 08/06/2012
(See new 2013 revised methods and tips for building the stand
 in many configurations including a "Quad leg version" in the update at the end of this article.)

The 2m/440 copper-pipe "J" Pole is truly a simple and most effective antenna that does not require any counterpoise radials/ground. When I'm on the road as a Contract Engineer I take a J Pole antenna, 50w mobile and an Astron VS12M with me. Most extended stay motels/apartments will not allow mounting any antennas to their structure. Leaning a J pole against the wall compromises the low angle radiation pattern of the J pole. I solved this by making a solid but removable stand for the J pole allowing me to place it on the patio, balcony or in the corner as a hat stand.

 

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The PVC stands (and hat rack antlers) are made from 3/4" PVC, elbows, cross, 45-angles, end-caps, 1/2" thread adaptor, PVC glue, and some brown spray paint.

 

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The key to these stands is the use of copper-pipe 1/2" CXM copper adapter soldered to both ends of the long J pole element that allows the use of threaded PVC fittings.

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I placed a copper sleeve (only soldered to the lower section) in the middle of the long J element. The J pole breaks down into two 40" copper pipe pieces. Now I can easily unscrew the PVC parts from the J make and make all easy to pack and ship!

 

Non-personal use of this image without permission is a violation of Copyright!

NOTE: the PVC gluing of the legs can be tricky to insure the legs are placed properly during glue drying to insure the J pole remains balanced and perpendicular to the floor. I hung a bubble level on the long J pole element to insure dead-center balance alignment. The great thing about PVC is if you mess up it was a cheap mistake to replace/repair!

Update to original article above 09-2013

My original tri-leg J-Stand on this page was found too unstable over time becaues of the small footprint. I found Lowes has a 3/4" 90 degree-side-outlet-elbow that allowed me to make a far more stable quad-leg J-Stand. See picture below:

For more J-Stand information with "how-to DIY" download the totally new revised

" Quad leg J Stand2. pdf " here..... de N6JSX.

 


 Copyright 2012, N6JSX Sidney, OH

All rights reserved == only non-profits may copy or reprint.

Editors note: There are many ways to use this idea and modify it for use with many small antennas.

Send us your ideas and feedback for possible publication here!

Have Questions? Email