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Choke balun 1:1
I used RG8 mini which seamlessly transfers 1kw. The balun should be mainly on the 160m band so I wound it on 2x 6 coaxial threads
post 19 Mar 2024
Toroid & balun Links →
4 to 1 balun
This balun was made with two ferrite cores, Jaycar LF1258)wired using Cat 5 UTP wire. The winding ratio is 6 turns to 12 turns. 50 ohm primary is 6 turns. The 200 ohm secondary is formed by adding 3 turns to either end, giving 12 turns overal
6:1 Voltage Balun
Requiring a balun to feed a balanced antenna from an un-balanced load with a impedance step up from 50ohms to 300ohms, a 1:6
9:1 transformer
A balanced antenna from an un-balanced load with a impedance step up from 50ohms to 300ohms, a 1:6 Voltage balun design using two L15 ferrite toroid cores was selected
9 to 1 balun
This balun was made with single ferrite core, Jaycar L01234) wired using single strand Cat 5 UTP wire. The winding ratio is 6 turns to 18 turns. 50 ohm primary is 3 x 6 turns, wired in parallel. The 450 ohm secondary is formed by winding 2 x 9 turns in series
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This balun was made with two ferrite cores, Jaycar LF1258)wired using Cat 5 UTP wire. The winding ratio is 6 turns to 12 turns. 50 ohm primary is 6 turns. The 200 ohm secondary is formed by adding 3 turns to either end, giving 12 turns overal
Requiring a balun to feed a balanced antenna from an un-balanced load with a impedance step up from 50ohms to 300ohms, a 1:6
A balanced antenna from an un-balanced load with a impedance step up from 50ohms to 300ohms, a 1:6 Voltage balun design using two L15 ferrite toroid cores was selected
This balun was made with single ferrite core, Jaycar L01234) wired using single strand Cat 5 UTP wire. The winding ratio is 6 turns to 18 turns. 50 ohm primary is 3 x 6 turns, wired in parallel. The 450 ohm secondary is formed by winding 2 x 9 turns in series
Noise suppression with X-phase II This device similar devices are known as QRM eliminators or noise killers, makes it possible
The K9AY loop antenna for 160 and 80m bands You don't have the space to put up a 4 beverage antenna's, an ewe or a 4-square and want 'good ears' on 160 and 80m? no problems try a k9ay loop antenna
Spiderbeam 10-15-20m E' una Yagi tribanda full-size leggera, fatta di tubi in vetroresina e filo