Jenkins model 202 "Radiovisor" television receiver
date: label: Date made
content: c. 1929
label: date made
content: ca 1929
label: date made
content: ca. 1929
label: date made
content: 1930
name: label: inventor
content: Jenkins, C. Francis
label: maker
content: Jenkins Television Corporation
notes: label: Description (Brief)
content: Early mechanical television set, Jenkins "Radiovisor" - drum type scanner. Serial number 225, tagged Dumont Research Division E 1295. Unit is a table model television receiver designed for mechanical scanning, 48 lines, 15 pictures per second. Synchronizing is accomplished by operating the same 60 cycle power system as that supplying the transmitter. Scanning is accomplished with a drum and shutter-disc system. The model 202 was designed for use with a standard shortwave receiver covering the television band from 100-150 meters and was provided with a power amplifier. The neon glow lamp in this unit is a De Forest Vision 601. The cabinet front contains a shadow box lens system permitting the viewing of enlarged images. The control panel contains two toggle switches. One throws the receiver to Speaker for tuning in radio signals or to Picture for viewing. The second switch controls the motor and also serves for vertical framing of pictures. The model 202 sold for $395 in a walnut cabinet.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Ethel DuMont
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.327756
label: accession number
content: 270106
label: catalog number
content: 327756
objectType: label: Object Name
content: Television receiver
label: Object Name
content: mechanical television receiver
physicalDescription: label: Measurements
content: overall: 22 1/2 in x 11 1/2 in x 20 in; 57.15 cm x 29.21 cm x 50.8 cm