File this tribander design idea in the tongue-in-cheek antenna brainstorm
category . . .
So, how about a 3-el tribander on a boom designed for optimum performance on
20m - with an added feature. When you switch to 15 or 10m, a little motor
inside the boom operates a screw drive which pulls the director and reflector
to the optimum spacing for that band.
73,
Jim
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