General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

Unknown

Dimensions

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

Length

N/A

Width

N/A

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Communications

Category

Telephony

Sub-Category

N/A

Manufacturer

AKA

NORTHERN ELECTRIC

Country

United States of America

State/Province

Unknown

City

Unknown

Context

Country

Canada

State/Province

Quebec

Period

1940'S TO 1960'S

Canada

This unit was removed from the St. Pie Repeater Station in St. Pie-de-Bagot, QC in 1968. It is labelled "System 1 to Thetford Mines." In 1931 C-carrier became the standard on the TransCanada Telephone System's transcontinental line.

Function

TO EFFECT MODULATION, DEMODULATION, FILTERING & AMPLIFICATION AT ONE END OF A CARRIER TRANSMISSION SYSTEM AND TO ALSO EQUALIZE THE TRANSMISSION OVER THE FREQ. RANGE EMPLOYED & REGULATE THE CIRCUIT NET LOSS. TO ALLOW THREE ADDITIONAL VOICE CHANNELS ON TWO PAIRS OF WIRE.

Technical

C-CARRIER SYSTEM PROVIDES 3 TELEPHONE CIRCUITS ABOVE THE NORMAL VOICE FREQUENCY CHANNEL. C-CARRIERS WERE THE FIRST TYPE OF TELEPHONE CARRIER SYSTEM WIDELY USED ("A" & "B" SYSTEMS HAD BEEN DEVELOPED BUT WERE NOT PUT TO EXTENSIVE USE). "C" CARRIERS WERE INITIALLY USED IN 1924, THE C-5 WAS A LATE 1930'S REDESIGN OF EARLIER SYSTEMS. IT USES FREQUENCIES BETWEEN 8- 30 KHZ.

Area Notes

Unknown

Details

Markings

DRAWING NOS. J68758A-2; J68756B-2; J68757B-2

Missing

N/A

Finish

Unknown

Decoration

N/A