The Z-Match (Z stands for “impedance”) antenna tuner design is known for many years and has got numerous incarnations. This commercially available QRP Z-Match antenna tuner is based on an iron-powder toroid core T130-6. I have modded this tuner to be able to tune the open-air-line feeders, like in doublet antenna. It’s a 1 EUR/ USD worth of investment but it brings a huge advance for this tuner! It is my most favorite tuner in the shack now!

Design and construction of my Doublet antenna is here:
https://youtu.be/TyXADE0jveI?si=dPakLkyKplRMWcW0

Z-Match tuner (as an Amazon partner I will earn a small amount of money , at no cost for you, if you buy through this Amazon-provided link):
https://amzn.to/3Sg8IuX

Or here ( non-affilliate link):
https://www.aliexpress.com/item/1005005601708767.html

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