Kenwood TH-42A - Manual (Page 68)

DTSS (Dual Tone Squelch System)
A squelch control system that relies on a burst of data
from the transmitter to open the receiver squelch. Only
when the transmitted code matches the code
programmed in the receiver will the squelch open.
DTSS Transmit Delay
The delay intentionally introduced at the transmitter to
delay transmission of DTSS codes after PTT is pressed.
The delay can improve the reliability of DTSS when
communicating with a receiver with slow response time.
Dual function keys
Transceiver keys assigned with two functions. This
method reduces the number of keys or controls
necessary which allows greater reduction in transceiver
size.
Encoder (ENC/SQL control)
The control that alters the transceiver VFO frequency.
See "Frequency step".
Encoder Lock
A function that disables the ENC/SQL control.
Frequency step
The size of frequency change produced when the
ENC/SQL control is turned one position while in VFO
mode.
Group code
When using Page, a group will commonly agree on a
single code that will be used for calls targeted for all
members. This code is the Group code. See "Individual
code".
Individual code
When using Page, each station must be assigned a
unique code that no other station uses. This is the
Individual code. Only the squelch of the targeted station
will open when a transmission with this Individual code is
made. See "Group code".
Key Lock
A function that disables almost all keys and controls on
the transceiver. The purpose is to avoid accidentally
changing settings on the transceiver.
Keypad
The collection of keys used to send DTMF signals and
select DTSS and Page codes.
Locked-out channel
An electronically marked memory channel that will be
skipped during Memory Scan. This is a quick way to
configure your Memory Scan without actually erasing
data from memory channels that you may wish to keep.
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