Section I. GENERAL INFORMATION
TYPE OF MANUAL: Organizational Maintenance
EQUIPMENT NAME AND MODEL NUMBER:
High Level Equipment
Low Level Equipment
The ANIGGC-3(*) and TT-76(*)/GGC are high-level equipment which operate with a line current of 20 or 60mA
(milliamperes). The ANIGGC-53(*) and TT-699(*)IGGC are low-level equipment which operate with a line current of
approximately 100 mallow-level equipment is high-level equipment which has been modified for low-level signaling
PURPOSE OF EQUIPMENT: Teletypewriter Sets AN/GGC-3(*) and AN/GGC-53(*) are lightweight, transportable
units which can be used in either fixed or mobile teletypewriter stations. They provide facilities for manual
transmission direct from keyboard and for tape transmission from transmitter-distributor. Received messages are
printed and perforated on paper tape for later transmission.
Teletypewriter Reperforator-Transmitters TT-76(*)IGGC are used to send and receive over direct current (dc)
wirelines carrier, or radio systems when used with Telegraph Terminal TH-5/TG, or similar line terminating devices.
Teletypewriter Reperforator-Transmitters TT-699(*)IGGC are used to send and receive over dc (6-volt polar) signal
For details on purpose of equipment, refer to Operator's Manual TM 11-5815-238-10.