Hits
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
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
80
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
Ferrite Shop Ferrite-shop on-line shop, cable clamps,toroids, cable cores, technic,ferrite material choice
Amateur radio kits by Kanga US
50MHz to 28MHz RX Converter The concept of the rx converter is quite simple and nothing really new. the local oscillator is a standard colpitts crystal oscillator producing the 22mhz lo signal