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Section II. EXPENDABLE SUPPLIES AND MATERIALS LIST
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TM-11-5815-238-20 Teletypewriter Sets AN/GGC-3 AN/GGC-3A AN/GGC-53 AN/GGC-53A and Teletypewriter Reperforator-Transmitters TT-76/GCC TT-76A/GGC Manual
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INDEX
TM 11-5815-238-20
GLOSSARY
ALTERNATING CURRENT (AC). Electrical current that is continually changing in magnitude and periodically reverting
in polarity.
DIRECT CURRENT (DC). Electric current (waves) that flows in only one direction and remains essentially constant in
AMPERE. Basic unit of electrical current flow.
MILLIAMPERE (MA). A measure for a small amount of electrical current.
MICROAMPERE (UA). One-millionth of an ampere.
BIAS. To influence or dipose in one direction.
BIAS METER. Measures the amount of marking or spacing bias teletype signals.
CURRENT. Flow of electric charge or rate of such flow.
FULL DUPLEX. Process of transmitting and receiving information at the same time.
HALF-DUPLEX. Permits operation in either direction but not at same time.
FUSE. To open a circuit when excessive current exists in a circuit.
RECEIVE. To receive a signal or message.
TRANSMIT. To send a signal or message.
TRANSMITTER-DISTRIBUTOR. Translates code perforations in paper tape into electrical impulses and sends them to
receiver units.
VOLTAGE. Electromotive force measured in volts.
NOTE
For more terms, see TM 11-5815-238-10.
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