Building my own balun, part 7: Better measurements of the result / 2018-04-24

Homemade balun version 2 SWR scan 1-60 MHz 20180424

Homemade balun version 2 SWR scan 10 meter band 20180424

Homemade balun version 2 SWR scan 20 meter band 20180424

Time to do measurements of the revised attic antenna. And now with a voltage balun with more windings the balun is working better, showing ok SWR values. A nice optimum in the middle of the 20 meter band (although I originally wanted that optimum near the digital mode part) and a nice optimum in the 10 meter band (also somewhat higher than originally planned). Comparing them to the original measurements show an increase in frequency in both SWR curves.

So I consider this a good result! Time to get it on the air and make contacts again.

Next step, working on an outside dipole with the Fritzel balun.

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 4: Deciding on where to put dipole ends and finishing it
• 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