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SCHEMATIC DIAGRAM
GLOSSARY
Amplitude Modulation
To modify the amplitude of the carrier
wave in accordance with the desired
signal, often abbreviated as AM.
Amplify
To enlarge; increase in scope or
volume.
Antenna
A device by which radio waves are
released or received.
Audio
Sounds that are capable of being
heard by the human ear.
Buffer Stage
A circuit used to insulate signals
from other circuits.
Capacitor
A device that is capable of holding
an electric charge.
Capture
The capacity of an FM receiver to
pick only the strongest signal and
thus
interference.
Carrier Wave
The unmodulated wave radiated by
a broadcast station.
Deviation
The change in frequency away from
the carrier wave due to FM
modulation.
Efficiency
The ratio of energy expended to
power produced.
Frequency Modulation
To modify the frequency of the carrier
wave in accordance with the desired
signal, often abbreviated as FM.
FM Broadcast Band
The range of frequency where
commercial frequency modulation
is
Communications
(FCC).
FM Transmitter
The sending apparatus of a radio
wave in which the message is
contained in the frequency of the
carrier wave.
Hertz
A term used to indicate the number
of cycles per second.
reduce
co-channel
allowed
by
the
Federal
Commission
High Fidelity
Inductor
MHz or Megahertz
Microphone
Modulate
Noise
Oscillator
Peak Detector
Pendulum
Resistor
RF Carrier
Saturate
Standing Wave Ratio
Tuned Circuit
-10-
A term used to indicate total
coverage of the hearing system.
A
device
capable
of
electrical energy in the form of a
magnetic field.
A million cycles per second.
A device used for producing an
electrical current corresponding in
its variations in air pressure of
sound.
To modify a characteristic of a
carrier wave in accordance with the
characteristics of a desired signal.
In electronics, noise is usually the
random electrical signal produced
by the thermal agitation of atoms or
static discharges.
A device that continually swings
back and forth between two fixed
points.
A device used to recover the
modulated signal from an amplitude
modulated wave.
A body suspended from a fixed
point so that it may swing freely.
An electric device used to restrict
the flow of electrical current.
The radio frequency wave used to
"carry" the desired signal.
Completely charged or at its limit of
operation.
A term used in electronics to
describe the amount of power
reflected back as a ratio of the
amount of power radiated.
A collection of components used to
select a single or small group of
frequencies.
storing
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