DESIGN YOUR OWN J
FOR ANY BAND!
(Try it with aluminum
Either way....TRY IT!
Design your J Pole for hf,
meters, 220, 440 and up!
J-Pole Antenna Design
SAVE TIME BY USING THE
On most of the J Pole designs
out there, a choke should be used as close to the feedpoint of the antenna
as possible to help prevent rf on the feedline and creating difficulty
with SWR readings. For 2 meters, the coil is 4 turns of coax at 5 inches
in diameter. You should get good results with the choke within 3 or 4
inches of the feedpoint on 2 meters.
Use the last part of your
feedline as the choke before attaching to the
"Iv'e built my j-poles out of 10ft sticks
of 1/2" emt conduit. Drill a 1/4" hole at the place where the "J"
goes. Make the "j"out of 1/4"
soft copper, Solder it in place thru the hole and add
the cable. Cost about $6 using new parts.
If you need a "super" j, use
a piece of 3/4" pvc as the insulator and add the stub and another 38 or so
inches of conduit. still really cheap"........
want to build but rather buy? Get a 2m/440 dual band J Pole from Amateur
Radio Supply...click the picture below for more
Click picture for more info!
Made in the U.S.A. from
solid aluminum! Very heavy duty and built to
Convert a J Pole to a Slim
Do not install ANY antenna over, under or near
J Pole Calculator and drawing used on
this page are
K4ABT G. E.
"Buck" Rogers Sr
See his articles in back copies of CQ Magazine
All rights reserved
Portions of this page copyright Hamuniverse.com
Don't look anywhere else for christening gifts and letterman jackets. We also provide duffle coat as well. Besides keeping in mind the demand
of motorcycle jackets, we have introduced the letterman
jackets to satisfy the thirst with our quality service. Get qualifying
Pass4sure MCP practice test here as well as Pass4sure cissp exam