Transistor radio mini-history Citat: "...CD [civil defense] marks. These were in the shape of little triangular marks which should appear in all the transistor radios made up to 1963. These marks were meant to show the frequencies for the emergency tuning of the radios in case of nuclear attack from the USSR..."
Texas Instruments: TI Information Bulletin Citat: "...First Commercial Transistor Radio. TI Supplying Transistors for First "Pocket Size" Radio. DALLAS (October 18, 1954) - TI's part in the production of the first commercial transistorized radio receiver will be announced beginning today in newspapers throughout the country. The "pocket size" radio has four TI transistors. It also uses a TI subminiature output transformer...The receiver is being assembled and marketed by the Regency Division of Industrial Development Engineering Associates, Inc., Indianapolis. It will be available this week to the public through sales outlets in Los Angeles and New York City...TIers can justly be proud of being the first to produce a high-gain transistor at a cost permitting its application to the high-volume commercial market..."
