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echo: ham_tech
to: ALL
from: JEFF EDMONSON
date: 1997-07-05 10:32:00
subject: J-Pole

Found the text here, on the Copper J-Pole
Contributed By:
Dennis Hamilton N8UDL
Copied from a handout at the Massillon Amateur Radio Club Meeting.
                          "J"_Pole_Antenna_For_2_Meters
This is how to build a cheap antenna for                         UŽŽŽŽ¨ ŽAŽ
the 2 meter band. I have made several of                   Cap-> 3    3  3
them and find that they work well. It is                         AŽŽŽŽ'  3
built from an article that appeared in                           3    3  3
CQ and was written by W8YDF. KA8LLE and                          3    3  3
I worked on this project and found that                          3    3  3
the antenna can be made from copper pipe.                        3    3  3
What is needed to make the antenna is one                        3    3  3
10' length of 1/2" copper pipe, one 1/2"                         3    3  3
copper tee, one 1/2" copper Ell, and two                         3    3  3
1/2" copper caps.  This is all soldered                          3    3  3
together and makes a very strong antenna.                        3    3  3
The print on the right shows the specs on                        3    3  3
how long the lengths of pipe are to be                           3    3 57"
cut. The feed line hooks to the antenna                          3    3  3
at 2 3/4" up from the top of the bottom                          3    3  3
cross pipe. I hooked the coax to the                             3    3  3
antenna by drilling a hole in the pipe     ŽAŽŽ UŽŽŽŽ¨           3    3  3
then soldering a 10/32 nut over the hole.   3   3    3 <-Cap     3    3  3
That way you can put a 10/32 screw          3   AŽŽŽŽ'           3    3  3
through a wire and fasten it to the         3   3    3           3    3  3
antenna.  The total cost of the antenna     3   3    3           3    3  3
should be around $5.00. It makes a good     3   3    3           3    3  3
portable antenna for your camper or to     19"  3    3           3    3  3
mountain top with.                          3   3    33    3  3
73  K8KSN.                                  3   3    3     3     3    3  3
                                            3   AŽŽŽŽ'    2 3/4" AŽŽŽŽ'  3
                                            3   3    3     3     3    3  3
                                           ŽAŽŽ 3    AŽŽAŽŽAŽŽAŽŽU    3 ŽAŽ
                                           Ell->3       3     3       3 <-Tee
                                                AŽŽŽŽŽŽŽAŽŽŽŽŽAŽŽ¨    3
                                                     3           3    3
                                                     3--2 3/4"---AŽŽŽŽ'
                                                     3           3    3
                                                                 3    3
                                                                 3    3
                                                                 3    3
                                                                 3    3
                                                                 3    3
                                                                 3    3
                                                                 3    3
Hope this helps
Note: I'm using a Windows based mail program on this system - don't know how 
the graphics are going to turn out.  If it's objectionable, I'll post it from 
the BBS, instead.
=========================================
73 = Best Regards                ka5thb@bigfoot.com
-Jeff KA5THB
---
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* Origin: A point of The Electronic Avenue (1:387/510.1)

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