Monitor, frequency deviation

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Ingenium, 1986.0540.001
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OBJECT TYPE: N/A
DATE: 1945–1957
ARTIFACT NUMBER: 1986.0540.001

MANUFACTURER: General Radio Co.
MODEL: 1181-A
LOCATION: Cambridge, Massachusetts, United States of America

More Information

General Information

Serial #: 1396
Part Number: 1
Total Parts: 2
AKA: N/A
Patents: N/A
General Description: METAL CABINET/ METAL & SYNTHETIC KNOBS/ GLASS DIAL COVER/ METAL, GLASS & SYNTHETIC WORKING PARTS

Dimensions

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

Length: 48.2 cm
Width: 34.4 cm
Height: 40.0 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: Canada
State/Province: Unknown
Period: 1940s & 1950s
Canada: USED IN CANADA
Function: TO INDICATE DIRECTLY THE MAGNITUDE & DIRECTION OF THE FREQUENCY DEVIATION OF A BROADCAST TRANSMITTER FROM ITS ASSIGNED CHANNEL FREQUENCY.
Technical: SHOWS THE TYPE OF EQUIPMENT & LEVEL OF ACCURACY ACHIEVED IN THIS TIME PERIOD.
Area Notes: Unknown

Details

Markings: MFR'S PLATE; 'FREQUENCY DEVIATION MONITOR/ TYPE NO. 1181-A SERIAL NO. 1396/ GR [LOGO]/ GENERAL RADIO CO./ CAMBRIDGE MASS., U.S.A./ SEE LICENSE NOTICE/ U.S. PATENTS:/ 1,967,185 2,298,177 2,362,503'/ PRINTED ON FRONT PANEL: 'ZERO SET/ CHECK CRYSTAL/ SIGNAL/ HEAT/ MONITOR/ POWER/ OFF OFF/ OSC CURRENT/ TEL.'/ DIAL ON FRONT READS: 'WESTON ELEC. INST. CORP. NEWARK,N.J., U.S.A./ CYCLES PER SECOND/ LOW HIGH/ GENERAL RADIO CO./ M'F'D. BY WESTON/ MODEL891 G.R. MEDS-13'/ PLATE & PRINTING ON BACK READS: '115 VOLTS/ 50-60 ~/ HEAT/ MONITOR/ EXT METER/ R.F. INPUT'/ STICKER ON BACK OF CABINET: ‘THIS APPARATUS USES INVENTIONS OF UNITED/ STATES PATENTS LICENSED BY RADIO/ CORPORATION OF AMERICA. PATENT NUMBERS/ SUPPLIED UPON REQUEST. LICENSED ONLY FOR OR/ FOR USE IN MEASURING OR TESTING ELECTRONIC/ DEVCIES, ELECTRON TUBE CIRCUITS, PARTS OF/ SUCH DEVICES AND CIRCUITS, AND ELEMENTS/ FOR USE IN SUCH DEVICES AND CIRCUITS.'
Missing: N/A
Finish: CRINKED FRONT PANEL PAINTED BLACK/ WHITE & BLACK PRINTING
Decoration: SYMMETRICAL PLACING OF DIAL & KNOBS/ LOGO ON MFR'S PLATE.

CITE THIS OBJECT

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

General Radio Co., Monitor, frequency deviation, between 1945–1957, Artifact no. 1986.0540, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/item/1986.0540.001/

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