Analog Communications; Using Signaling - Kenwood NXR-1700 Function Reference

6 ANALOG COMMUNICATIONS / 6.1 Using Signaling

6 ANALOG COMMUNICATIONS

The repeater can communicate by transmitting and receiving analog signals on an analog channel.

Using Signaling

6.1
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-D7
Configuring QT/DQT Decode ( Edit > Channel Information > Channel Edit > QT/DQT Decode)
・
Configuring QT/DQT Dec (QT/DQT Decode) ( Edit > Channel Information > QT/DQT Dec)
・
Configuring QT/DQT Encode ( Edit > Channel Information > Channel Edit > QT/DQT Encode)
・
Configuring QT/DQT Enc (QT/DQT Encode) ( Edit > Channel Information > Channel Edit > QT/DQT Enc)
・
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.
If the QT goes from consistent to inconsistent while an analog signal of a consistent QT is being received, the repeater
does not decode a QT for 80 ms. The QT decode resumes after 80 ms elapses.
Note
QT Decode Delay is enabled if "Mixed" or "Analog" is configured in Channel Type .
・
FUNC (E)/ Ver 2.00
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