PVC J-Pole Antennae for 2m
I'm a new ham operator and am getting ready to make a J-pole ant for my house and can't seem to find any exact plans online for making one. If there is anyone out there that can send me some plain language and detailed plans on how to build one please let me know.
Thank ya'll for your time.
73's Robert, KE5YIZ
J pole antenna for 2 meters
Welcome to the world of Amateur Radio... where "homebrew" construction is half the fun of a fascinating hobby.
I've never seen a J pole constructed using PVC pipe....although, certainly possible to make the structure of PVC and have a wire J pole configuration on the inside.
Most J poles are constructed using copper pipe..... available at local home improvement stores such as Lowes or Home Depot......... I'm surprised that a "Google" search didn't turn up any plans....the internet is full of them.
I don't have a ready reference....but, I'll get back with an edit to indicate a URL.
Last edited by WJ5O; 02-23-2009 at 01:47 AM.
Reason: add URL
73 Bill WJ5O/BCN 28.289 MHz
I guess you are looking for a 2 meter antenna? Also what are you going to use the pvc for?
I actually made a j-pole out of 300ohm wire and put it on a dowel in PVC pipe. It seemed to work ok, but was narrow banded.
Given the cost of copper pipe these days, I would recommend using galvanized conduit (1/2" or so).
My best performing 2m antenna (aside from a beam) is a J-Pole made from conduit. It is up about 35', fed with 1/2" hard line from a Yaesu FT-3000m (70 watts) and I have worked 2m FM simplex stations as far away as 90+ miles - from Shelby NC to Leesville, SC (and neither of us are on mountains).
If you put the JPole together correctly, it should give you some decent gain.
Things I have learned:
- Invest in decent feedline - decent feedline cannot be found at radio shack
- Spend more time, effort and money in your antenna and feedline than you spend on your radio.
- Radio Shack does not sell feedline - they sell very long, flexible dummy-loads that come coiled up in a package.
Originally Posted by KE5YIZ
Follow this link to Arrow Antennas. http://www.arrowantennas.com/ When you get there, you will find "Instruction steets" listed in the navigation bar. Click on it, and when the page opens, scroll down to J-Pole antennas. Click on OSJ-146/440. It's a dual band J-Pole for 2M/70Cm.. Except for the feedline, everything you need to build it can be found at your local home improvement center and Radio Shack..
Last edited by KM5FL; 02-23-2009 at 02:10 AM.
The March QST Magazine has instructions on how to do I think you're trying to do.
Here's a web site that shows how to make a 2 meter J-Pole using 450 ladder line. Put the ladder line j-pole inside a piece of pvc pipe.
You can also do a google search for 450 ohm lead j-pole or 300 ohm twin lead j-pole
That should get you started.
Last edited by KE7TIV; 02-23-2009 at 04:41 AM.
Reason: Added google search info
You could also try this one if you insist on going with pvc:
However, if you want a proven performer, try the two meter version of this:
I've been using it for a while now, and it works surprisingly well on 2m, and even gives good performance on 440 without any retuning.
Good luck and happy homebrewing.
While your building a j-pole you might consider just making it collinear. It adds a few feet to the height of the antenna but gives you a few dB gain over the basic designs you often see. Here is some instructions on how to do this-
I would highly recommend you take weather into consideration before you attempt this. If you have high winds this might not be the best idea...
[URL="http://NorthJeffcoARL.org"]North Jeffco Amateur Radio League[/URL]
plans for freestanding J Pole made with PVC
pg 44 of the March '09 QST. A freestanding J Pole antenna made with PVC