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Balun coaxial 20. At 27 MHz


The length of the balun in Figure C must be Length = Wavelength / 20. At 27 MHz, the capacitor will be approximately 120 pF. It may be expedient here to use a trim capacitor, in order to obtain an optimum fit in this way
post 20 Sep 2020

Balun coaxial 20. At 27 MHz

Toroid & balun Links

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1:4 Balun, ON6MU
Balun for folded dipoles

4:1 balun for 160 to 10 meters
Here we calculate the half wave length of the matching section of the 4:1 coax balun

4:1 coax balun design CALCULATOR
Here we calculate the half wave length of the matching section of the 4:1 coax balun

50 ohm single-band baluns, I0JX
The balun herein described is suitable for 50-ohm monoband antennas which can often represent a valid choice

Construction de Baluns, F1FRV
The transformer uses two ferrite tubes, material "43" or "61", or other material with permeability between 125 and 850