General Information

Serial #

1679

Part Number

1

Total Parts

2

AKA

N/A

Patents

N/A

General Description

THE BODY OF THE MONITOR & THEFRONT PANEL ARE METAL. THE GAUGE MOLDINGS ARE BAKELITE. THE SWITCHES ARE METAL & THE WARNING-INDICATOR LIGHTS ARE PLASTIC. THE THERMOMETER IS GLASS & THE FLUID INSIDE IS MERCURY. VACUUM TUBES ARE MADE OF GLASS & METAL.

Dimensions

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

Length

48.0 cm

Width

31.0 cm

Height

38.3 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

Unknown

State/Province

Unknown

Period

Unknown

Canada

Unknown

Function

Used by broadcasting Stations operating in the 500-2000kc band to enable them to comply with the frequency tolerance specification of the E.C.C.

Technical

EXAMPLE OF THE HIGH QUALITY FREQUENCY CHECKING EQUIPMENT REQUIRED BY RADIO STATIONS IN THAT TIME PERIOD TO COMPLY WITH GOVERNMENT REGULATIONS RE RADIO FREQUENCY.

Area Notes

Unknown

Details

Markings

Mfr's plate on casing front bears following info.: 'FREQUENCY/ DEVIATION MONITOR/ TYPE NO./ 1181-A/ SERIAL NO./ 1679/ GR/ GENERAL RADIO CO./ CAMBRIDGE MASS., U.S.A./ SEE LICENSE NOTICE/ U.S. PATENTS:/ 2,298,177 2,362,503'/ Plate on casing back bears following info.: 'F.C.C. APPROVAL NO. 1467'/ Label on casing back bears following info.: ‘GENERAL RADIO COMPANY/ SERVICE DEPARTMENT/ 99 FLORAL PARKWAY/ TORONTO 15, ONTARIO/ TELEPHONE 247-2171'/ Second label below, bears following info.: ‘THIS INSTRUMENT IS LICENSED UNDER/ PATENTS OF THE AMERICAN TELEPHONE/ AND TELEGRAPH COMPANY SOLELY FOR/ UTILIZATION IN RESEARCH, INVESTIGATION, MEASUREMENT, TESTING, INSTRUCITON/ AND DEVELOPMENT WORK IN PURE/ AND APPLIED SCIENCE./ 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/ DEVICES, ELECTRON TUBE CIRCUITS, PARTS OF/ SUCH DEVICES AND CIRCUITS, AND ELEMENTS/ FOR USE IN SUCH DEVICES AND CIRCUITS'./ Plate in lower right of casing back bears following info.: ‘115 VOLTS/ 50-60~'

Missing

POWER CORD

Finish

THE FRONT OR "DRESS" PANEL IS FINISHED WITH A GREY-BROWN PAINT. THE BODY OF THE UNIT IS A GREY-WHITE COLOUR PAINTED OVER A SILVER METAL.

Decoration

SERIAL NO. PLATE RIVETED ONTO THE CENTRE FRONT OF THE UNIT.