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Force12 Sigma 143-30-40 meter dipole rotable
This was a very frustrating antenna to tune and install
post 06 Aug 2024
30 meter antenna Links →
A 20- & 30- or 20- & 39-Meter Trap Antenna
Thatit would be fun and doable to design a 20 & 30 or 20 &39meter vertical antenna, featuringa coaxial trap to isolate the20-meter portion
Antenna verticale per 30/40 metri
L'antenna ha una risonanza a circa 10500 MHz, quindi un po' piu in alto rispetto alla nostra fettina dei 30 metri
Antenna Bobtail-Curtain 30 Meters
It is made up of three vertical elements of 1/4 wave aligned in the same plane; each vertical element is spaced a length equal to ½ wave from the following vertical element
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Thatit would be fun and doable to design a 20 & 30 or 20 &39meter vertical antenna, featuringa coaxial trap to isolate the20-meter portion
L'antenna ha una risonanza a circa 10500 MHz, quindi un po' piu in alto rispetto alla nostra fettina dei 30 metri
It is made up of three vertical elements of 1/4 wave aligned in the same plane; each vertical element is spaced a length equal to ½ wave from the following vertical element
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