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Build a J-Pole Antenna
If the antenna is six meters long, the length of the wire should be approximately 10 to 12 inches long. If our antenna is two meters long, the length of the wire will be 8 inches less overall
post 06 Dec 2024
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Antena OSJ dual band VHF / UHF com um cabo
It consists of a half-wave dipole element, which instead of being fed from the center as is more common is fed from one end in this case, the bottom
Antenne en J alimentee par un cable coaxial
Like the model supplied by a two-wire line, it consists of a radiating element of half-wave length attacked at its lower end by a quarter-wave line
J-antenna supplied by a two-wire line
The J antenna, so called because of its shape, is generally used on 2m and 70cm, even 23 cm and 6m
Antenne verticale VHF Slim-Jim
The Slim-Jim vertical antenna is of the 1/2 wave type supplied at the end end fed and therefore does not require a ground plane unlike a 1/4 wave type antenna
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It consists of a half-wave dipole element, which instead of being fed from the center as is more common is fed from one end in this case, the bottom
Like the model supplied by a two-wire line, it consists of a radiating element of half-wave length attacked at its lower end by a quarter-wave line
The J antenna, so called because of its shape, is generally used on 2m and 70cm, even 23 cm and 6m
The Slim-Jim vertical antenna is of the 1/2 wave type supplied at the end end fed and therefore does not require a ground plane unlike a 1/4 wave type antenna
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