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Antenne rhombique
Directionality of this antenna 20 to 90 depending on the length of wire used, the power gain varies from 15 to 60, the antenna impedance varies from 650 to 700 ohms
post 04 Dec 2024
Antenna Multibands Links →
Cobweb Antenna 20m - 17m - 15 - 12m - 10m
This antenna, I made, not only covers 10-20m but tunes quite well to 40 and 80, has a reasonable swr at 6m! and a good swr from 120mhz to over 150Mhz
CobWebb Antenna for the 14,18,21,24,28 MHz Bands
The Cobwebb is a very practical multi-band antenna my end fed wires need to be changed to cover the 5 bands with a very acceptable performance
Dipole for 20 and 40m bands
By experience, I have noticed that a 20m band dipole antenna must be elevated by at least 8m above ground to perform well
Dipolo a doppia polarizzazione
Nei collegamenti a grande distanza,e' ormai noto la superiore efficienza delle antenne verticali rispetto al dipolo orizzontale
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This antenna, I made, not only covers 10-20m but tunes quite well to 40 and 80, has a reasonable swr at 6m! and a good swr from 120mhz to over 150Mhz
The Cobwebb is a very practical multi-band antenna my end fed wires need to be changed to cover the 5 bands with a very acceptable performance
By experience, I have noticed that a 20m band dipole antenna must be elevated by at least 8m above ground to perform well
Nei collegamenti a grande distanza,e' ormai noto la superiore efficienza delle antenne verticali rispetto al dipolo orizzontale
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