Small, light, and efficient 49:1 and winder that fit inside the KX-2 case.

Equipment Antennas
1

I wanted a smaller, lighter antenna wire winder with a case for my unun that uses a tiny core for extra lightweight efficiency. I also wanted the case to not require hardware to hold the lid down. I think I accomplished all my goals with this one.

15 Likes
2

Nice design. If someone is looking to make one, Sotabeams sell the core, without the burden of digikey’s postage rates.

5 Likes
3

Good find! That’s awesome!!!

2 Likes
4

This is a cool build … I have been wanting to build my own EFHW and now I have the motivation and the plans to do it!

Thanks - Chris

3 Likes
5

Thank You! I hope it works out!

6

I’ve had good luck with this product. Just add a wire of appropriate length and you’re good to go. I mostly use it as a 40 meter EFHW and my KX2 ATU matches it on all the bands that I care about.

7

An efficiency of 95% would be all too nice, hi.
Apparently a mix-up when reading from the spreadsheet of MM0OPX

1 Like
8

I wasn’t using his spreadsheet, but when I went back and looked, it turns out I did misinterpret my own data. It’s more like 88-90 percent efficient by my calculations. Can’t revise a YouTube video. Oh well.

1 Like