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SIGNALING
Quiet Talk (QT)/ Digital Quiet Talke (DQT): Your dealer may
have programmed QT or DQT signaling on your transceiver
channels. QT and DQT signals allow you to ignore (not hear)
calls from other parties who are using the same channel.
MDC-1200: MDC-1200 is a data system using Audio
Frequency Shift Keying (AFSK).
OPTIONAL SIGNALING
Your dealer may also program several types of optional
signaling for your transceiver channels.
5-Tone Signaling: Refer to “5-TONE SIGNALING” on
page 20.
DTMF Signaling: DTMF Signaling opens the squelch only
when the transceiver receives a call containing a matching
DTMF code.
FleetSync Signaling: Refer to “SELCALL (SELECTIVE
CALLING)” on page 16.
OPERATOR SELECTABLE TONE (OST)
You can change the preset encode and decode tones for the
selected channel. Up to 40 OST pairs can be pre-programmed
by your dealer.
1 Select your desired channel.
2 Press the key programmed as [Operator Selectable Tone
(OST)] to enter OST Select Mode.
• “OST” and the current OST number appear.
3 Press the <B or C> key to select the desired OST table
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 the S key.