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J-pole antenna line TV 300 to 600 ohm
The antenna in "J", so called because of its shape, is generally used on 2m and 70cm, even 23 cm and 6m
post 29 May 2026
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Vertical antenna Slim Jim
The slim jim has more bandwidth or a wider range of frequencies than the jpole
VHF End-Fed Half-Wave J-Pole
The Folded Dipole Antenna, with balsa wood strips and epoxy resin for strength and protection, and the dipole was made from 1/16" diameter
Verticale alimentee en J
All these dimensions can be extrapped to other frequencies,example for 70 CM 132/207 * 69 = 44 cm
Antena dual VHF-UHF tipo SLIM-JIM
Using 300 Ohms parallel cable, the Slim Jim has the following characteristics, bandwidth with 1.5: 1> 4MHz
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The slim jim has more bandwidth or a wider range of frequencies than the jpole
The Folded Dipole Antenna, with balsa wood strips and epoxy resin for strength and protection, and the dipole was made from 1/16" diameter
All these dimensions can be extrapped to other frequencies,example for 70 CM 132/207 * 69 = 44 cm
Using 300 Ohms parallel cable, the Slim Jim has the following characteristics, bandwidth with 1.5: 1> 4MHz
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