What is Transistor radio?
[[File:D 1957 Akkord Peggie.jpg|thumb|Old transistor radio]] A '''Transistor radio''' is a [[radio]] receiver which uses [[transistor]]s to amplify the sound. Transistor radios can be cheap and small and some use very little [[electric power]]. Some can amplify the weak radio waves that are usually not picked up by weaker [[vacuum tube]] radios. Transistor radio [[broadcasting]] receivers for portable use were sold in great numbers starting in the late 1950s. Soon, vacuum tube radios became rare. {{Commons}} [[category:Radio receivers]] [[Category:Audio technology]] {{tech-stub}}