ERLA "Circloid II" radio receiver
date: label: date made
content: ca 1925
name: label: maker
content: Electronic Research Associates, Inc.
notes: label: Description (Brief)
content: Marked on front panel: "ERLA / Circloid II". Unit uses a reflex type circuit with a crystal detector. Two tubes are utilized (missing) of the 201-A type. A panel strip has binding posts for battery, antenna, and ground connections. Two "Erla Balloon Circloid" coupling coils (200-500 M) are affixed to variable tuning capacitors. Filament rheostats vary voltage on each tube. One audio and one radio-audio reflex transformers are utilized in the circuit. This may have been a kit, to be assembled by the purchaser. Allied Van Lines shipping tag #67 on unit. Reference: similar unit appears in the Langley Set Index, pages 21 to 22, although the Circloid II does not appear.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.321081
label: catalog number
content: 321081
label: accession number
content: 241556
objectType: label: Object Name
content: radio receiver
physicalDescription: label: Measurements
content: overall: 8 1/2 in x 16 1/2 in x 12 1/2 in; 21.59 cm x 41.91 cm x 31.75 cm