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ACME Reflex Acmefone radio receiver

ACME Reflex Acmefone radio receiver

ACME Apparatus Company
1923
electrical circuit and radio demonstration model

electrical circuit and radio demonstration model

Department of Physics, Harvard University
circa 1940
electrical circuit and radio demonstration model, part

electrical circuit and radio demonstration model, part

Department of Physics, Harvard University
circa 1940
LC resonant circuit with condensers and variable inductance

LC resonant circuit with condensers and variable inductance

Wireless Specialty Apparatus Company
circa 1908
Leyden jar condenser

Leyden jar condenser

Wireless Specialty Apparatus Company
circa 1908
Leyden jar condenser

Leyden jar condenser

Wireless Specialty Apparatus Company
circa 1908
Leyden jar condenser set

Leyden jar condenser set

Wireless Specialty Apparatus Company
circa 1908-1909
name plate from a Navy type CR1126 spark transmitter

name plate from a Navy type CR1126 spark transmitter

Wireless Specialty Apparatus Company
1918
Navy type SE 1220 medium wave receiver

Navy type SE 1220 medium wave receiver

Wireless Specialty Apparatus Company
1918
radio relay key

radio relay key

Wireless Specialty Apparatus Company
1909-1920
RCA type IP-501A long wave radio receiver amplifier

RCA type IP-501A long wave radio receiver amplifier

Wireless Specialty Apparatus Company
1922
Wireless Specialtiy type A group tuner

Wireless Specialtiy type A group tuner

Wireless Specialty Apparatus Company
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The Collection of Historical Scientific Instruments
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