Signaling; Qt/Dqt Decode/Encode; With Ste (Squelch Tail Eliminator); Optional Signaling - Kenwood TK-3180 Function Reference

18 SIGNALING

Signaling consists of Optional Signaling (DTMF, 2-tone
and FleetSync) and the QT/DQT that performs selective
call and Mute function control.

18.1 QT/DQT Decode/Encode

The QT/DQT is the signaling for facilitating
communication within a Group when sharing the same
channel with several Zones (Talk Group).
QT/ DQT cannot be heard from the speaker since it uses
a sub-audible tone.
QT/DQT allows you to use the siganling in Conventional
Group and the Squelch Tail Eliminator function.
16 Conventional Group.)
The transceiver mutes unwanted calls when the QT/DQT
for each Zone is configured. A user can communicate
within a Talk Group without listening to conversations
from other groups.
This signaling does not affect the voice communication
since it does not use audible frequencies. The
transceiver can distinguish the signaling since QT is a
continuous wave form even if the reception starts midway.
Table 18-1
QT (Quiet Talk) uses a continuous sub-audible
QT
tone (67.0 - 254.1 [Hz]).
DQT (Digital Quiet Talk) uses a 23-bit signal
(Code: 000 - 777 (hexadecimal). The DQT
DQT
signal has polarity and can be configured as
Normal or Inverse.
The following QT/DQT operation is available.
Table 18-2 QT/DQT Operation
When the received QT/DQT code matches the
QT/DQT code configured in the transceiver,
Reception the receiving tone sounds.
The tone mutes when the transceiver receives
a Reverse Burst (QT) or Turn-off Code (DQT).
The transceiver sends the QT/DQT code
configured in the transceiver when the PTT
switch is pressed. The transceiver continues
sending the QT/DQT while either the PTT
Transmission
switch, the PF Data PTT port, the PF Ext. PTT
(Voice) port, or the PF Ext. PTT (Data) port is
pressed. You cannot send/receive the QT/
DQT in the Zone in Trunking system.
You can configure the QT/DQT Decode/Encode code to
each channel using KPG-89D.
68
(Refer to
QT/DQT
Function Reference
!
Configuration using KPG-89D
• Configuring the QT/DQT Decode (Refer to FPRG
6.3.5 QT/DQT Decode.)
• Configuring the QT/DQT Encode (Refer to FPRG
6.3.6 QT/DQT Encode.)
18.1.1 With STE
(Squelch Tail Eliminator)
The Squelch Tail Eliminator in QT/DQT eliminates the
noise factor from the transmitting party in order to
communicate comfortably.
You can configure the Squelch Tail Eliminator function
using KPG-89D.
!
Configuration using KPG-89D
• Configuring the w/STE function (Refer to FPRG
6.15.5 Modulation Line tab - w/STE.)

18.2 Optional Signaling

You can use the Optional Signaling to make an individual
call. The transceiver emits the Alert Tone and starts the
Transpond function when the configured Optional
Signaling matches the received Optional Signaling.
You can use DTMF or FleetSync as the Optional
Signaling. (Refer to 20 DTMF, 21 2-tone, 22 FleetSync.)
You can configure the Optional Signaling to each channel
using KPG-89D.
!
Configuration using KPG-89D
• Configuring the Optional Signaling (Conventional
Group) (Refer to FPRG 6.3.10 Optional
Signaling.)
•
Configuring the Optional Signaling (Trunking
system) FPRG 6.6.7 Optional Signaling.)
Version: 1.11