Kenwood TM-451A - Manual (Page 120)

Reverse
A function that switches the transmit and receive
frequencies.
Scan
The general term for several functions that allow a series
of frequencies or memories to be monitored sequentially
and automatically without intervention by the operator.
Simplex channel
Refers to a communications channel where the receive
and transmit frequencies are equal.
S-meter Squelch
A squelch method where the operator selects the
minimum S-meter signal strength a received signal must
have before it will be heard.
Split channel
Refers to a communications channel where the receive
and transmit frequencies are not equal.
Squelch
A function that automatically mutes a receiver’s speaker
output when no receive signal is present.
Squelch Hang Time
The time that the squelch remains open after a carrier
drops out.
Squelch threshold level
The receive level at which a receiver’s speaker output is
muted. This level is usually adjustable, either manually
or automatically by the transceiver microcomputer.
Standard offset
Refers to a transmit frequency offset used to access
repeaters that is equal to the amount and direction
stipulated by existing band plans for a particular region.
See "Transmit offset".
Station Page code
When using Page, each station must be assigned a
unique code that no other station uses. This is your
Station code. Only the squelch of the targeted station
will open when a transmission with this Station code is
made. See "Group code".
Subaudible Tone
A low-frequency non-audible signal superimposed by a
transmitter on a transmitted signal for the purpose of
accessing some types of repeaters.
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