Balun 4:1 with coaxial 1/2 d'onde

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Balun 4:1 with coaxial 1/2 d'onde

Symmetrical side, the braids are connected together by welding. The loop has an electrical length of half a wavelength and its physical length can be calculated by multiplying the half wavelength by Vf, the coefficient of velocity of the cable

post 15 May 2023

Toroid & balun Links →

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Het Balun project
254/5000 Especially if you are a QRP member, the loss or return of a balun is important. You always want to make a connection with the lowest possible transmission power. It is a shame if the balun converts a large part of the supplied power into heat!

RF Baluns
This method will increase the antenna feed impedance by four so with a 50 ohm feeder it is suitable for driving 200 ohm impedance antennas, such as folded dipoles

Magnetic longwire baluns 1:9
This Magnetic Longwire Balun MLB makes it possible to efficiently use a coaxial lead-in cable with all forms of longwires

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Balun 4:1 with coaxial 1/2 d'onde

Italy provices

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