![](../copia_image/vote.jpg)
![](img/img.jpg)
J-Pole for 144-146 MHz
Sia in VHF che in UHF l' SWR e' circa 1:1 sulla porzione di banda che mi interessa
PDF File
![J-Pole for 144-146 MH](images/j-pole-for-144-146-mhz.jpg)
Antenna jpole Links →
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
81
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
![Antenna switch arduino for icom IC-7300](/../antype/ch45/images/antenna-switch-arduino-for-i-com-ic-7300.jpg)
Antenna switch arduino for icom IC-7300 A solution built around an arduino nano and one of the readily available four relay switching boards