Vacuum tube

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Ingenium, 1966.0621.001
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OBJECT TYPE: POWER AMPLIFIER/REPEATER
DATE: 1922–1939
ARTIFACT NUMBER: 1966.0621.001

MANUFACTURER: Northern Electric
MODEL: 104D
LOCATION: Canada

More Information

General Information

Serial #: 980
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: GLASS/ SYNTHETIC/ METAL

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length: 10.4 cm
Width: 5.8 cm
Height: N/A
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Vacuum Tubes
Category: Telephone
Sub-Category: N/A

Manufacturer

AKA: Northern Electric
Country: Canada
State/Province: Unknown
City: Unknown

Context

Country: Canada
State/Province: Unknown
Period: PROBABLY 1920'S & 1930'S
Canada: MANUFACTURED AND PROBABLY USED IN CANADA
Function: USED AS A VOICE AND CARRIER FREQUENCY AMPLIFIER FOR TELEPHONE REPEATERS (REF.1).
Technical: REPLACED MODEL 104A, BUT NOT THE D-86327 VERSION WHICH WAS ESPECIALLY SELECTED FOR HIGH INSULATION. THIS MODEL WAS DISCONTINUED AFTER PRODUCTION IMPROVEMENTS IN THE 104D (REF.1, PG.122). THE OVERSTAMPING OF D-86327 INDICATES THAT THE IMPROVEMENT WAS NOT COMPLETE.
Area Notes: Unknown

Details

Markings: ON GLASS: '980'/ HOT BRANDED IN BASE: 'NORTHERN ELECTRIC/ MADE IN CANADA/ 104D OR D-86327'
Missing: From CA of 05/01/1998 by Pat Montero: No - Complete
Finish: UNCOLOURED GLASS/ BLACK SHELL
Decoration: N/A

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If you choose to share our information about this collection object, please cite:

Northern Electric, Vacuum tube, circa 1922–1939, Artifact no. 1966.0621, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingenium.ca/en/id/1966.0621.001/

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