Heathkit DX-60 AM Net

K8PZ S-Match Tuner Project

Friends 0 Comments 01/23/2019  

Steven, K8PZ, sent us this link:

"After an extensive research and experimenting I achieved the design shown in the above drawings of the Balanced Universal ATU System. To make it distinctive from other types of ATU's, I call my design S-Match©. The system is intended to accommodate balanced antenna systems transmitting on a very wide frequency spectrum, ranging from 160 m band up to 10 m band. Likewise, it is able to take proper care of impedances and associated reactances ranging from less than 20 ? and up to 3000 ?. Built with the proper components, it is able to transfer loads of more than 1000 Watts. This balanced antenna-tuning unit has only three components: a capacitor, a roller inductor and a balun or RF transformer. The input circuits are isolated from the output circuits, resulting in a system, which is suitable also for single-wire antennas and coax fed antennas."

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