A transistor radio is a small portable radio receiver that uses transistor-based circuitry.
The transistor radio has a small dark grey rectangular case with a handle on top. Looking at the front, it has a speaker on the left side and a round dial with two knob controls on the right side.
Scooby-Doo, Where Are You!
They danced on another occasion to radio music on the beach, this time interrupted by Scooby-Doo, who tuned in to a report of a dognapping crime wave. The gang decided to make the dognapping spree their next case after they heard on the broadcast that Buck Masters, the first victim of the attacks, had offered a five hundred dollar reward for help in catching the thieves.