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A cheap easy, hf 1:1 balun


My Baluns are working well on both my 40M resonant dipole and my G5RV antennas
post 16 Dec 2021



Toroid & balun Links

213



A Simple Clamp-On Current Transformer
After the core was cut I wrapped a layer of electrical tape around the core as shown in figure 3. The next step was to cut a strip of copper

Homemade ferrite core baluns
I became interested in baluns when I had to choose one for my OCFD antenna. Generally 1:6 baluns are recommended for OCFD's as the nominal impedance at the 1/3-2/3 feed point is about 300 ohms

Balun sur air
It's a question of doing as well as a manufactured product and getting an education the equipment is reduced to a dummy load of 50ohms and the analyzer MFJ-259

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

End-fed wire antennas with 9.1 balun
The balun trasnsform the very high impedance at the end of a half-wave wire to about 50 Ω

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