1958 British Three Transistor MW/LW portable

1958JulyRadioConstructorThe plans for this three transistor British longwave/medium wave portable appeared in Radio Constructor sixty years ago this month, July 1958.

The first transistor served as detector (using one of the transistor’s junctions as a diode) and AF amplifier, with two more stages of AF to drive the speaker. For local stations, no external antenna was necessary, since the RF coil, which was permeability tuned, served as antenna. For fringe areas, a short external antenna could be added.

A printed circuit board was available from one of the magazine’s advertisers, which was said to make the construction process more or less foolproof.

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