Making baluns

Upon starting to play amateur radio, I made baluns. The one I made this time is a stranded wire wound around a ferrite core. That is colled a float balun.

ingredient	number
FT-50-43	1
vinyl coated wire, 30cm	2
connector(BNC or M)	1
case, SW-40 or SW-50	1
connector(for wires)	2
51Ωresistor (to measure SWR)	1

 

How to make it
First, twist the vinyl coated wires.