Analog Communications; Using Signaling; Configuring The Length Of Time Until The Qt Decode Is Restarted (Qt Decode Delay) - Kenwood TKR-D710 Function Reference

6

ANALOG COMMUNICATIONS

The repeater can communicate by transmitting and receiving analog signals on an analog channel.
(Refer to ABOUT AVAILABLE COMMUNICATION
6.1

Using Signaling

If the repeater receives an analog signal and the received QT tone or DQT code matches the QT tone or DQT code
preconfigured for the repeater, the repeater starts the repeat behavior.
 QT (Quiet Talk)
QT is a type of signaling using a continuous sub-audible sine wave (67.0 Hz to 254.1 Hz). The frequency can be
configured in steps of 0.1 Hz.
 DQT (Digital Quiet Talk)
DQT is a type of signaling using "1" and "0" in the 23-bit word. An octal code with a number between 000 and 777
can be configured. The DQT signal has a polarity and can be configured as Normal or Inverted, corresponding to
the circuit configuration of a repeater or a target repeater.
Also, a maximum of 15 combinations of QT tone and DQT code (Current) can be configured in addition to the QT
tone and DQT code (Primary) configured for each channel, and the repeater can wait to receive using the QT/DQT
configured for Primary and Current.
(Refer to Waiting to Receive by Multiple Signaling (Multiple Encode/Decode
Configuration using KPG-174D
• Configuring QT/DQT Decode (
• Configuring QT/DQT Encode (

Configuring the Length of Time Until the QT Decode is Restarted (QT Decode Delay)

QT Decode Delay is the length of time from when the matching state of the received QT tone becomes inconsistent
until the repeater restarts the QT Decode.
This length of time is configured to prevent the QT Reverse Burst code which is sent from the subscriber unit from
being detected as a normal QT tone by the repeater.
Normally, the repeater closes the squelch and stops transmitting using the Repeat PTT control when the repeater
receives the Reverse Burst Tone in which the phase of the configured QT tone is reversed. However, the repeater
may erroneously detect the received Reverse Burst tone as the QT tone configured for the repeater and resume
transmitting using the Repeat PTT control again if the transmit duration of the Reverse Burst Tone is too long.
Delaying the timing to resume the QT Decode for the period configured in QT Decode Delay prevents the repeater
from erroneously detecting the QT Reverse Burst.
Note
If "Off" is configured in QT Decode Delay, the repeater activates the QT Decode immediately after the received QT tone
becomes inconsistent.
Configuration using KPG-174D
Configuring QT Decode Delay (
FUNC (E)/Ver 2.50
MODES.)
Edit > Channel Information > Channel Edit)
See
Edit > Channel Information > Channel Edit)
See
Edit > Optional Features > Common Page 1)
See
Table).)
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