Building my own balun, part 4: Deciding on where to put dipole ends and finishing it / 2018-04-15

I finally decided where to put the holes in the case for the dipole ends of the balun. This took some serious pondering!

I made those holes, put screws through them and wound the ferrite core with enamelled copper wire. To guess the needed length of wire I first wound it with packing rope, made a small knot at the point where it was enough and unwound the rope to measure the length I used and took a bit longer wire.

Using sanding paper I removed the enamel isolation from the ends of the wires and used soldering tin on it.

Other parts of this project:

• Building my own balun, part 1: idea and parts needed
• Building my own balun, part 2: measuring the 'old' balun
• Building my own balun, part 3: First work on the case
• Building my own balun, part 5: First tests of the result
• Building my own balun, part 6: Redo and some success: a working antenna again
• Building my own balun, part 7: Better measurements of the result