Thursday, March 17, 2016

Needed a toroid for an antenna tuner

I heard back from Andy that he had made a modulation transformer using the banding material as I had posted. The only problem I had with that method was the material being spring and just wouldn't stay in the shape I wanted. A tip of the hat to Andy. He suggested I could use a torch to remove the temper and make it more managable. It worked like a charm.
I wanted to make an antenna tuner and didn't have the toroid. Once I softened the banding winding a toroid was a piece of cake.This is what I needed.
Here are the finished toroids.
I got 1 millihenry overall and about 50 microhenry between taps on the larger one.

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