Philco model T4-124 transistor radio, 1958. The invention of the transistor at Bell Labs in 1947 gave engineers a powerful new tool that they quickly adopted for new radio circuits. Portable radios based on vacuum tubes existed prior to the transistor but transistorized designs proved more durable and much more energy efficient. Transistor radios first went on sale in late 1954 and by the early 1960s many Americans owned one.
T4 Code 124 Radio Philco, Philadelphia Stg. Batt. Co.; USA, build
Rare Vintage Philco T45-124 Transistor Radio w/ Original Leather Case. works.
1960s PHILCO Model T-802-124 Transistor Portable Radio Leather Wrapped Very Nice
Rare Vintage Philco T45-124 Transistor Radio w/ Original Leather Case. works.
1958 Vintage Retro Atomic Transistor Radio Philco Model T4-124 Aqua Turquoise
1958 - Philco Radio Gallery
PHILCO T4J
Transistor Network - Electronic Edition - December 1996
1958 Philco T4-124 Transistor Radio, Mid-century Vintage
T4 Code 124 Radio Philco, Philadelphia Stg. Batt. Co.; USA, build