Hits
Antenna quadrifilar helicoidal
The quadrifilar helicoidal antenna quite a mouthful is easy to construct even though it does look complicated, and the results are excellent
post 13 May 2024
Antenna for UHF VHF Links →
Antenna HALO per i 70 mhz
L’alimentazione avviene mediante il sistema denominato gamma-match con il condensatore
Antenna quad 144 MHz
Versione da appartamento leggermente modificata a 6 elementi con guadagno teorico di 13 Db
Antenna HALO
A halo antenna, or halo, is a horizontally polarized, omnidirectional 1⁄2 wavelength dipole antenna, which has been bent into a loop with a small break on the side of the loop directly opposite the feed point
Antenna Yagi 1240 Mhz
Yagi for the 23 cm band drawing by DL9AQ
Antenne big-whell
Consists of three full-wave horizontal loops similar to a clover
155
L’alimentazione avviene mediante il sistema denominato gamma-match con il condensatore
Versione da appartamento leggermente modificata a 6 elementi con guadagno teorico di 13 Db
A halo antenna, or halo, is a horizontally polarized, omnidirectional 1⁄2 wavelength dipole antenna, which has been bent into a loop with a small break on the side of the loop directly opposite the feed point
Yagi for the 23 cm band drawing by DL9AQ
Consists of three full-wave horizontal loops similar to a clover
Antenna splitter per VHF-UHF per quattro ricevitori Chi dispone di una sola antenna e vuole collegarvi più di un ricevitore necessità di uno splitter
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