At the July meeting, David Morgan gave an excellent and informative talk on Standing Wave Ratio (SWR)—and why it doesn’t tell the whole story. He also explained key concepts such as impedance, reactance, RF feedback, and common mode currents, along with their impact on station performance. Most importantly, David provided clear, step-by-step guidance on how you can improve your own station setup, making the talk both practical and easy to follow.
(The Powerpoint presentation is available to view at the end of this page.)
After the talk the club Chairman, Mike Suddaby was keen to see for himself how a correctly tuned and setup 40m Delta Loop Antenna would perform using an Icom 7300 HF radio. The Icom 7300 is The Icom IC-7300 is a base station HF transceiver (also known as “ham radio”) that operates on HF, 6-meter, and 70-centimeter bands (with the 70cm band available in European versions). It’s notable for being Icom’s first Software Defined Radio (SDR) HF transceiver. It features a real-time spectrum scope, a large color touchscreen LCD, and a built-in automatic antenna tuner.
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