Kenwood TM-255E - Manual (Page 65)

GLOSSARY
Repeater
A station, usually installed in a central location at a
high elevation, designed to receive and re-transmit
signals. The purpose of a repeater is to increase the
receive and transmit range of stations able to access
the repeater.
Reset (initialization)
The act of restarting the transceiver microcomputer.
Depending on the type of reset done, some or all
memory may be erased and set to default values. A
reset can be done as a last resort when the
transceiver appears to be malfunctioning.
Simplex channel
Refers to a communications channel where the
receive and transmit frequencies are equal.
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 signal superimposed by a transmitter
on a transmitted signal for the purpose of accessing
some types of repeaters.
SWR (standing wave ratio)
An antenna that is not correctly matched in
impedance with a transmission line and transmitter
will reflect some portion of the transmitted signal back
toward the transmitter. This causes a standing wave
pattern to develop. The ratio of maximum to minimum
voltage (VSWR) on the transmission line when such a
condition exists is commonly referred to as the SWR.
Tone frequency
See "Subaudible Tone".
Transmit offset (shift)
All Amateur voice repeaters operate on separate
transmit and receive frequencies. Transmit offset is
the amount that a transmit frequency is different from
a receive frequency. See "Transmit offset direction".
Transmit offset (shift) direction
Refers to the direction, either plus {+) or minus (-),
that a transmit frequency is with respect to a receive
frequency. Both the direction and amount of offset
must be selected correctly to access a repeater. See
"Transmit offset".
VFO (variable frequency oscillator) mode
The mode that allows any individual frequency to be
selected within the range of the VFO only restricted by
frequency step limitations. When in VFO mode,
frequencies are selected using the Tuning control or
microphone [UP]/[DWN].
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