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Evaluating efficiency, transformer and mismatch losses in toroid transformers - some observations.
Two methods for transformer loss are evaluated. We learn that mismatch loss must be accounted for.

Dan Koellen AI6XG
Jun 17, 20226 min read


Reactive Component Measurement With the NanoVNA
Exploration of using the nanoVNA to measure inductance and capacitance at frequency of use.

Dan Koellen AI6XG
May 15, 20226 min read


Don't Fear the Smith Chart
Like many radio amateurs I was initially intimidated by the Smith chart. Transmission line and antenna theory, unfamiliar terms and...

Dan Koellen AI6XG
Jun 15, 202113 min read
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