J Pole Antenna 2 Meters

This paper describes two types of 2 meter J-Pole antennas, one made of copper pipe and a roll-up J-pole made of TV twin lead. The figures give the details of the dimensions, components and construction.

I hope you enjoy these as much as I have. The Roll-Up J-Pole has been in my case on many trips for the company. Its great to contact the local hams from the Motel room to find out what is going on. One night I found a great swap meet in Huntsville AL.

Table 1. Scaling for other frequencies.

J-Pole Scaling	JPOLESCL.xls
Dr. Carl O. Jelinek
2/28/96 20:26
Roll-up J-Pole
Frequency {MHz}	147	223	440	28.4
Total Length {in.}	59.125	38.975	19.753	306.034
To Notch {in.}	16.875	11.124	5.638	87.346
Stub {in.}	1.5	0.989	0.501	7.764

Copper J-Pole
Frequency {MHz}	146	223	440	28.2
Total Length {in.}	60.625	39.692	20.116	313.874
To Notch {in.}	20.25	13.258	6.719	104.84
Stub {in.}	3	1.964	0.995	15.532
Spacing {in.}	3	1.964	0.995	15.532

73 de Carl N6VNG.