Test set, transmission
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1970.0250.001
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- OBJECT TYPE
- POWER LEVEL INDICATOR/AUDIO FREQ.
- DATE
- 1933
- ARTIFACT NUMBER
- 1970.0250.001
- MANUFACTURER
- General Radio Co.
- MODEL
- 568 CM
- LOCATION
- Cambridge, Massachusetts, United States of America
More Information
General Information
- Serial #
- 764 (.1)
- Part Number
- 1
- Total Parts
- 2
- AKA
- N/A
- Patents
- N/A
- General Description
- WOOD CASE, BAKELITE TOP PANEL, MILLIAMP METER, ROTARY STEP SWITCH & RESISTORS/ COPPER OXIDE RECTIFIER
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 25.4 cm
- Width
- 12.7 cm
- Height
- 11.4 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Communications
- Category
- Radio
- Sub-Category
- N/A
Manufacturer
- AKA
- General Radio
- Country
- United States of America
- State/Province
- Massachusetts
- City
- Cambridge
Context
- Country
- North America
- State/Province
- Unknown
- Period
- 1934-1950
- Canada
-
Unknown - Function
-
USED TO MEASURE THE POWER LEVEL OUTPUT OF AUDIO FREQUENCY AMPLIFIERS, TRANSMISSION LEVEL OF AUDIO FREQUENCY TRANSMISSION LINES ETC. - Technical
-
ONE OF MANY LEVEL METERS MANUFACTURED FROM 1930 ON. - Area Notes
-
Unknown
Details
- Markings
- .1: PRINTED ON TOP PANEL: 'POWER LEVEL INDICATOR/TYPE 586-CM SERIAL NO. 981/ GENERAL RADIO CO./ CAMBRIDGE MASS. U.S.A./ U.S. PATENT 1,901,344/ REF.LEVEL=0.006 WATTS/ CALIBRATED FOR 500 OHM LINES'/.2 SAME EXCEPT: 'SERIAL NO. 764' [NOT U.S. PAT. LINE]'/.1 METER: 'DECIBELS/ GENERAL RADIO CO./ MF'D BY/ WESTON ELECTRICAL INSTRUMENT CORP., NEWARK N.J. U.S.A./ MODEL 600 NO. 5064/ G.R. TYPE 586-01'/.2 SAME EXCEPT: 'NO. 4110'/ CALIBRATED METER & DIAL/ CHART ON BOTTOM INCLUDES: 'TYPE 586 POWER-LEVEL INDICATOR/.../ LOAD RESISTANCE-OHMS/GENERAL RADIO COMPANY/ CAMBRIDGE A, MASSACHUSETTS/ Form 223A'
- Missing
- N/A
- Finish
- BOX, CLEAR VARNISH OVER MAHOGANY STAIN/ TOP PANEL, BLACK NATURAL BAKELITE/ METER CASE, BLACK BAKELITE, METER CALIBRATION BLACK ON WHITE/BOX CALIBRATION INFORMATION ENGRAVED INTO BAKELITE WITH WHITE FILLER
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
General Radio Co., Test set, transmission, circa 1933, Artifact no. 1970.0250, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/item/1970.0250.001/
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