Before toroids there were coils and some plugged in like this British-supplied spy radio used by the Norwegian resistance.
That suitcase-sized radio was the rough equivalent of the QSX-mini.
¡ªMike Perry, WA4MP
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On Dec 2, 2021, at 8:20 am, Keith Davis <islandpiper51@...> wrote:
I wonder if there's an easy way to make the toroids "plug in".......boy, that would make adjusting/modifying them a breeze.