Before the MP3 was the Walkman and before that was the "tranny" - the transistor radio. Personal radios existed before their mass popularity in the 1960's, but then they became a teenage 'must-have'.

Before the MP3 was the Walkman and before that was the "tranny" - the transistor radio. Personal radios existed before their mass popularity in the 1960's, but then they became a teenage 'must-have'.

They had to catch the attention of the public. That happened with the hand-held radio. The first transistor radio was a joint project between the Regency Division of Industrial Development ...

All handheld radios, as well as desktop radios, use transistors, both discrete as well as contained in chips. The transistor radio was one of the first consumer devices that employed solid state ...