| Author |
Message |
    
Lowpowerhal
Intermediate Member
Username: Lowpowerhal
Post Number: 305
Registered: 7-2003
| | Posted on Saturday, August 14, 2004 - 1:30 pm: | 
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Ok help me out guys. Im making a 2 meter j-pole.Ok to start off the main element is 57 3/4inches long and the tuning stub is going to be 19 3/4 inches long .Is this right so far? Ok the main question is the space between the main element and the tuning stub. If im did my math right, the inside measurement between the main element and tuning stub is 2 inches is this correct?Also making this out of 1/2 inch rigid copper pipe. Any help would shur be appreciated.This is my weekend constuction project. HELP
And Thanks
Hal kc0svc |
Barracuda
Intermediate Member
Username: Barracuda
Post Number: 254
Registered: 3-2003
| | Posted on Saturday, August 14, 2004 - 3:55 pm: |
|
Lowpowerhal,
Try this website. You get to input the frequency and it gives you back all the dimensions.
J Pole Calculator
Have fun,
Barracuda |
Tech808
Moderator
Username: Tech808
Post Number: 3295
Registered: 8-2002
| | Posted on Saturday, August 14, 2004 - 4:09 pm: |
|
Hal,
Check out the Link Below as this is the exact same instructions our Ham Club has used for years in building 2 Meter J Pole antennas.
We have used the 2 Meter J Pole on the Red Cross building here for several years now with very good results.
http://www.alpharubicon.com/elect/jpolejaden.htm
Hope this helps.
Lon
Tech808
N9OSN |
Lowpowerhal
Intermediate Member
Username: Lowpowerhal
Post Number: 306
Registered: 7-2003
| | Posted on Saturday, August 14, 2004 - 8:09 pm: |
|
Thank You Lon and Barracuda , We got it cut to all the dimension we will solder it up tonight.And with any luck will have it on the air in a week or two.
Thanks again
Hal
kc0svc |
