Regency TR-1 by I.D.E.A.

Date of introduction:  Oct. 25, 1954 Display technology:  
New price:  $49.95 Display size:  
Size:  5.0" x 3.0" x 1.3"
 127 x 77 x 33 mm3
Weight:  11.0 ounces, 314 grams Serial No:  126316
Batteries:  Eveready 412 (22.5V)  Date of manufacture:  1955
AC-Adapter:   Origin of manufacture:  USA
Precision:   Integrated circuits:  4 Ge transistors
Program steps:   Courtesy of:  Joerg Woerner

On May 10, 1954 Texas Instruments announced a revolutionary new electronic product, the silicon transistor. Searching for a killer application, TI developed together with Industrial Development Engineering Associates (I.D.E.A.) of Indianapolis, Indiana the first commercial available miniaturized transistor radio marketed as the Regency TR-1. Read the press release, dated October 18, 1954.

The first commercial transistor radio hit the consumer market in October 1954. The Regency TR-1 featured four germanium transistors operating on a 22.5-volt battery that provided over twenty hours of life (tube radios with batteries only lasted several hours at best).

Inside the TR-1 you'll find not only the transistors manufactured by Texas Instruments, the transformer is a Dallas made product, too.

Several colors were initially offered in the plastic case: black, ivory, mandarin red, cloud gray, mahogany and olive green. Fashion iridescent colors were offered later and rare clear plastic cases also were made.

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Joerg Woerner, December 5, 2001. No reprints without written permission.