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Stub and filter calculator
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Understanding Quarter-Wave Stubs Made Easy: An Interactive Tool for Every Ham

9M2PJU November 27, 2025

In RF engineering, quarter-wave stubs are one of the simplest and most powerful tools we…

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Guide to Wire Types and Sizes for Dipole Antennas

Building an effective dipole antenna starts with one fundamental decision: choosing the right wire. The…

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June 11, 2025
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How to Do Basic Repair for Amateur Radio Transceivers

Amateur radio transceivers open up a world of communication, but like all electronics, they sometimes…

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May 27, 2025
yagiuda ubuntu
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Understanding Yagi-Uda’s dipole Program for Antenna Analysis

The dipole program is part of the Yagi-Uda project, a collection of tools designed for…

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April 19, 2025
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The History and Design of the Quad Antenna

A quad antenna is a type of directional wire radio antenna that is widely used…

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March 22, 2025

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