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Tube type signal boosters were common from the early 50's into the late 60's (I've got a 67' Airline console that has the original boster from the house I got it from screwed to the back). I don't know exactly when transistor type boosters were first made, but I'd immagine what you saw in popular science was among the first.
Transistors were pretty lousy in the early days not being able to handle much power, or wide band signals like TV signals for several years after first being used in radio.
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