Roll-up and Copper Pipe J-Pole Antennas
By: Dr. Carl O. Jelinek

Roll-up J-Pole Diagram

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.} 1.500 >0.989 0.501 7.764

Copper J-Pole Diagram

Copper J-Pole

Frequency {MHz} 146 223 440 28.2
Total Length {in.} 60.625 39.692 20.116 313.874
To Notch {in.} 20.250 13.258 6.719 104.840
Stub {in.} 3.000 1.964 0.995 15.532
Spacing {in.} 3.000 1.964 0.995 15.532


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