8
SIGNALING
Q
uiet
t
Alk
(Qt)/ d
igitAl
Q
uiet
t
Alk
(dQt)
Your dealer may have programmed QT or DQT signaling on your transceiver
channels. A QT tone/ DQT code is a sub-audible tone/code which allows you to
ignore (not hear) calls from other parties who are using the same channel.
o
ptionAl
S
ignAling
Your dealer may also program several types of optional signaling for your
transceiver channels.
2-tone Signaling:
2-tone Signaling opens the squelch only when your
transceiver receives a call containing matching 2 tones.
DTMF Signaling:
DTMF Signaling opens the squelch only when the transceiver
receives a call containing a matching DTMF code.
FleetSync Signaling:
Refer to “S
elcall
(S
elective
c
alling
)” on page 9.
MDC-1200:
MDC-200 is a data system using Audio Frequency Shift Keying
(AFSK). Transceivers communicate at a 200 baud rate, using 200 Hz and
800 Hz tones.
o
perAtor
S
electAble
t
one
(oSt)
You can change the preset encode and decode tones for the selected channel.
Up to 6 OST pairs can be pre-programmed by your dealer.
1
Select your desired channel.
2
Press the key programmed as
Operator Selectable Tone
.
• “ot” appears on the display, followed by the current OST number.
3
Press
<B
and
C>
to select the desired OST number.
4
Use the transceiver the same as in a regular call; press the
PTT
switch to
transmit and release it to receive.
5
To exit OST mode and return to the preset encode and decode tones, press
S
.
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