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A
B
C
pre-emphasis
processing
receiver
RF
SCA
S/N
spurious products
stability
stereo pilot
stereo separation
subcarrier
suppression
SWR
THD
G–4
The deliberate accentuation of the higher audio
frequencies; made possible by a high-pass filter.
The procedure and/or circuits used to modify
incoming audio to make it suitable for transmis-
sion.
An option which adds incoming RF capability to an
existing transmitter. See also "Translator."
Radio Frequency; (1) A specific portion of the
electromagnetic spectrum between audio-fre-
quency and the infrared portion. (2) A frequency
useful for radio transmission (roughly 10 kHz and
100,000 MHz).
Subsidiary Communications Authorization; see
"subcarrier."
Signal to Noise
Unintended signals present on the transmission
output terminal.
A tolerance or measure of how well a component,
circuit, or system maintains constant operating
conditions over a period of time.
See "pilot."
The amount of left-channel information that
bleeds into the right channel (or vice versa).
A carrier signal which operates at a lower fre-
quency than the main carrier frequency and which
modulates the main carrier.
The process used to hold back or stop certain
frequencies.
Standing-Wave Ratio; on a transmission line, the
ratio of the maximum voltage to the minimum
voltage or maximum current to the minimum
current; also the ratio of load impedance to in-
tended (50 ohms) load impedance.
Total Harmonic Distortion
FM30/FM100/FM250 User's Manual
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