Test set, radio waves

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Ingenium, 1976.0549.001
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OBJECT TYPE: DIODE
DATE: 1945
ARTIFACT NUMBER: 1976.0549.001

MANUFACTURER: Unknown
MODEL: TMN-14MN
LOCATION: United States of America

More Information

General Information

Serial #: 275
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: METAL CASE WITH HINGED COVER, COVER FASTENER AND WIRE HANDLE/ GLASS COVER ON METER FACE/ SYNTHETIC KNOBS & INSTRUCTION CARD

Dimensions

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

Length: 18.0 cm
Width: 12.0 cm
Height: 9.5 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Communications
Category: Radar
Sub-Category: N/A

Manufacturer

AKA: Unknown
Country: United States of America
State/Province: Unknown
City: Unknown

Context

Country: Canada
State/Province: Ontario
Period: 1940-1960
Canada: USED IN CANADIAN RESEARCH AT NRC
Function: USED TO TEST THE QUALITY OF A CRYSTAL RECTIFIER (GERMANIUM DIODE).
Technical: ONE OF THE FIRST RADIO WAVE TEST SETS BUILT OUTSIDE OF MIT. SEE COVINGTON'S LETTER IN SUPP. INF. FILE.
Area Notes: Unknown

Details

Markings: INSTRUCTIONS ON INSIDE LID TITLED: 'OPERATING INSTRUCTIONS/ TYPE TMN-14MN CRYSTAL RECTIFIER/ TEST SET'/ PENCILLED ON BOTTOM OF INSTRUCTIONS: '#275'/ TEST & CALIBRATE POSITIONSARE ENGRAVED AT SWITCH POSITIONS/ METER CALIBRATED IN KILOHMS & PROVIDES GOOD/BAD SCALES FOR 6 TYPES OF CRYSTAL RECTIFIERS/ PLATE ON PANEL: 'TMN-14MN'/ STAMPED ON OUTSIDE: 'SOLAR NOISE'
Missing: From CA of 11/21/2001 by David Daley: No - Complete
Finish: LIGHT BROWN-GREY WRINKLE ENAMEL ON CASE/ BLACK TOP PANEL & KNOBS/ WHITE PRINTING ON PANEL/ CREAM COLORED INSTRUCTION PANEL WITH BLACK PRINTING
Decoration: N/A

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Unknown Manufacturer, Test set, radio waves, circa 1945, Artifact no. 1976.0549, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingenium.ca/en/id/1976.0549.001/

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