Specifications

TM 11-5820-670-30
af
afc
agc
am
crs
fm
if.
kHz
MHz
rec
rf
rt
xmit
GLOSSARY
Section 1 ABBREVIATIONS
Audio frequency
Automatic frequency control
Automatic gain control
Amplitude modulation
Crystal reference system
Frequency modulation
Intermediate frequency
Kilohertz
Megahertz
Receive
Radio frequency
Radio-transmitter
Transmit
Section II DEFINITION OF UNUSUAL TERMS
Attenuate. To reduce signal strength.
Automatic frequency control (aft). A system that produces an error voltage which is proportional to
the amount of oscillator drift. The error voltage corrects this drift.
Automatic gain control (age). A system that automatically adjusts the gain of a signal so as to
produce a constant level of output power.
Drift. The action of an oscillator whose output frequency varies, even though circuit conditions remain
the same.
Limiting. Clipping those portions of a wave that exceed a specific amplitude.
Squelch. To quiet a receiver by cutting off its output when no signal is being received.
Glossary 1/(Glossary 2 blank)