Hugo Gernsback, who all but invented "pulp" SF and promoted hobby radio his entire career. (And a notoriously slow payout to writers, I'm told. Well, you can't have everything).
His magazines were full of ideas from the start: ...I did not say good ideas. Eventually you run out of extension cord, have to stop Westinghousing and fix bayonets! Also: machine guns. Possibly a problem.
(A few magazines down the pile: Great White Fleet battleships, fitted with new transmissions and great big metal wheels, crawling up onto the beach. Slow? maybe, but they'd eat tanks for lunch. At least until they bogged down or sheared a gear or axle.)
BUILDING A 1:1 BALUN
6 months ago