Vacuum tube

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Ingenium, 1994.0266.001
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OBJECT TYPE: HALF WAVE/BEAM POWER AMPLIFIER
DATE: 1944
ARTIFACT NUMBER: 1994.0266.001

MANUFACTURER: Unknown
MODEL: 70L7GT
LOCATION: Unknown

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 2
AKA: N/A
Patents: N/A
General Description: TUBE: GLASS; METAL; SYNTHETIC/ CARTON: CARDSTOCK

Dimensions

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

Length: 8.4 cm
Width: 3.2 cm
Height: N/A
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

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

Manufacturer

AKA: Unknown
Country: Unknown
State/Province: Unknown
City: Unknown

Context

Country: Canada
State/Province: Unknown
Period: LATE 1940'S & 1950'S
Canada: DISTRIBUTED AND PROBABLY MANUFACTURED IN CANADA
Function: USED AS A COMBINED HALF-WAVE RECTIFIER AND OUTPUT AMPLIFIER IN AC/DC RADIO RECEIVERS
Technical: TYPE SAMPLE OF DUAL PURPOSE TUBES DESIGNED FOR RADIOS THAT USED SERIES FILAMENT ACROSS THE 110 VOLT LINE
Area Notes: Unknown

Details

Markings: TUBE: ON GLASS: '70L7/ GT'/ ON SHELL: 'MADE FOR/ CANADIAN GENERAL/ ELECTRIC CO. LTD.'/ MOULED IN BASE BOTTOM: 'LICENSED ONLY TOEXTENT INDICATED ON CARTON'/ CARTON: PRINTING READS IN PART: 'GENERAL/ ELECTRIC/ RADIOTRON/ CANADIAN/ GENERAL ELECTRIC/ COMPANY LIMITED/ [GUARANTEE]/ 70L7GT'/ INNER SLEEVE: 'Licensed under/ patents owned/ and/or controlled/ by Thermionics/ Limited for use/ in radio broadcast/ receiving sets for/ the non-commer-/ cial reception of/ public radio tele-/ phone broadcast-/ ing./ Patented 1926-/ 1944 inclusive.
Missing: N/A
Finish: TUBE: UNCOLOURED GLASS; BLACK SHELL WITH RED PRINTING/ CARTON: BLUE & ORANGE
Decoration: CARTON: TOP HALF DECORATED WITH DRAWINGS ON STARS & OTHER CELESTIAL BODIES

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

Unknown Manufacturer, Vacuum tube, after 1944, Artifact no. 1994.0266, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/1994.0266.001/

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