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Collineare 900MHz
Per le prove ho utilizzato uno spezzone di cavo RG213, ma qualsiasi altro cavo puo' andar bene
post 05 Aug 2024
Antenna for UHF VHF Links →
Cheap Yagis 144 MHz.antenna
The simplified feed uses the structure of the antenna itself for impedance matching. So the design started with the feed and the elements were built around it
Coaxial Colinear For 432 MHz
the collinear antenna has been around a long popularity, make a collinear antenna from coaxial cable simple
Coaxial Dipole
The Folded Dipole exhibits the self-balancing behavior. The feed impedance is several times higher than the cylindrical dipole's
Cubical quad 8 elements 144MHz
The 2.5m boom is a 20x35mm rectangular tube that is easily found in DIY store the distance between the reflector and the last director is 2.47m
Delta Loop for 144mhz
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The simplified feed uses the structure of the antenna itself for impedance matching. So the design started with the feed and the elements were built around it
the collinear antenna has been around a long popularity, make a collinear antenna from coaxial cable simple
The Folded Dipole exhibits the self-balancing behavior. The feed impedance is several times higher than the cylindrical dipole's
The 2.5m boom is a 20x35mm rectangular tube that is easily found in DIY store the distance between the reflector and the last director is 2.47m
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