Built on an open board and with no ground wire, the radio didn’t need a complex power ... A big resistor drops a lot of voltage to supply the tube in the circuit. There was a neon bulb to ...

When you think of an old radio it’s possible you imagine a wooden-cased tube radio receiver as clustered ... rack casing for a “boat anchor” ham radio transmitter. But neither of those ...

Amateur radio is a popular hobby and service that brings people, electronics and communication together. People use ham radio ...