FET Field-Effect Transistor
Frequency Synthesizer A circuit that generates precise frequency signals by
means of a single crystal oscillator in conjunction
with frequency dividers and multipliers.
FM Frequency Modulation; the process of impressing
a radio signal by varying its frequency.
FSK Frequency Shift Keying; an F technique for shifting
the frequency of the main carrier at a Morse code
rate. Used in the on-air identification of frequencies.
Gain Reduction The process of reducing the gain of a given
amplifier.
Harmonics Undesirable energy at integral multiples of a
desired, fundamental frequency.
High Frequency Frequencies in the 3.0 to 30.0 MHz range.
Highband Frequencies affected by the pre-emphasis.
I/O Input/Output
LED Light Emitting Diode
Modulation The process by which a carrier is varied to
represent an information-carrying signal.
MOSFET Metal Oxide Semiconductor Field Effect Transistor;
A voltage-controlled device with high input
impedance due to its electrically isolated gate.
Nearcast A transmission within a localized geographic area
(ranging from a single room to several kilometers)
PA Power Amplifier
PAI Power Amplifier Current
PAV Power Amplifier Voltage
Pilot A 19-kHz signal used for stereo transmissions.
Pre-emphasis The deliberate accentuation of the higher audio
frequencies; made possible by a high-pass filter.
Processing The procedure and or circuits used to modify
incoming audio to make it suitable for transmission.
Receiver An option which adds incoming RF capability to an
existing transmitter. See also “Translator.”
Glossary G-3
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