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ACME Reflex Acmefone radio receiver

ACME Reflex Acmefone radio receiver

ACME Apparatus Company
1923
Audio instrument, amplifier. Rectangular, grey metal deivice with grate-like top with a silver strip down the center. Black dial, red and black buttons and switch.

Audio instrument, amplifier. Rectangular, grey metal deivice with grate-like top with a silver strip down the center. Black dial, red and black buttons and switch.

Radio Corporation of America
circa 1940
cathode ray tube

cathode ray tube

Radio Corporation of America
1940-1960
core memory module, planar

core memory module, planar

Radio Corporation of America
1971
Gled portable 6-tube radio broadcast receiver

Gled portable 6-tube radio broadcast receiver

Gled Radio Company
1924
Grebe Synchrophase MU1 radio receiver with chain linking tuners

Grebe Synchrophase MU1 radio receiver with chain linking tuners

A. H. Grebe & Company, Inc.
1925-1926
grid, cathode, and filament wire from Radiotron UY 227 vacuum tube

grid, cathode, and filament wire from Radiotron UY 227 vacuum tube

Radio Corporation of America
1920-1930
grid, cathode, piece of filament, and bushing from a Radiotron 224 vacuum tube

grid, cathode, piece of filament, and bushing from a Radiotron 224 vacuum tube

Radio Corporation of America
1920-1930
kit radio set

kit radio set

Sears, Roebuck & Company
1943
noise meter

noise meter

Radio Corporation of America
1940-1945
photomultiplier

photomultiplier

Radio Corporation of America
circa 1959
photomultiplier tube

photomultiplier tube

Radio Corporation of America
circa 1970
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