SUBMARINE CABLE STATION OPERATOR (209)

Receives cable messages by sound and siphon recorder tape at a speed of 25 five-letter code groups per minute and transmitting at 20 words per minute under normal operating conditions. 

SUBMARINE CABLE STATION TECHNICIAN (197)

Diagnoses faults in relays, automatic controls, distributors, reperforators and other components used in electronic submarine equipment, multiplex equipment and automatic printers, by using precision and other hand tools to determine source of mechanical malfunctioning, in order to make necessary repairs or adjustments.

SWITCHBOARD INSTALLER-REPAIRMAN, MANUAL (232)

Installs and tests switching and auxiliary equipment for manual telephone exchanges used in an Army post, camp, station, or larger headquarters. 

TELEGRAPH OPERATOR (236)
Station Agent, Railway

Transmits and receives messages in International Morse code, using telegraphic equipment in an Army organization.

TELEPHONE OPERATOR (309)

Operates a telephone switchboard to relay incoming or outgoing messages to or from branch telephones in an Army camp, post, station headquarters, or other installation.

TELEPHONE SWITCHBOARD OPERATOR (650)
Switchboard Operator
Telephone Operator, Field

Installs, operates, and performs minor maintenance on portable magneto type switchboards and common battery switchboards.

TELETYPE MECHANIC (239)

Installs, inspects, maintains, and repairs teletype machines, including receiving, transmitting, relay units, and auxiliary equipment.

TELETYPE OPERATOR (237)
Telegraph Printer Operator
Teletype Switchboard Operator

Operates a teletype, simplex, or other kind of telegraphic typewriter for transmission and reception of communications.
Keeps a log in which a record of all messages received and transmitted is maintained. Operates equipment using perforated tape for transmission and reception.