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4 CHANNEL INFORMATION
4.8
Operation Mode
You can configure Repeat, Simplex or Duplex mode to
each channel.
Select Repeat Mode for repeat operation channel.
Select Duplex Mode for two-way simultaneous
communication channel (using different frequencies for
transmission and reception).
Select Simplex Mode for one-way communication
channel (using a same frequency for transmission and
reception).
Table 4-3 Operation Mode Function
Mode
TKR-750/850/751/851 starts a repeat operation
when QT/DQT code is matched and transmits using
the transmission frequency and a QT/DQT Encode
Repeat
code. When it is operating under this mode, a
received audio is modulated and you can monitor
the audio.
This communication method is referred to as
"Simplex system" since same frequency, which is
for RX and TX is used for each other. On a channel
Simplex
configured this Mode, it is impossible to receive a
call while transmitting. A received audio is muted
when the Local Mic PTT or the External PTT is on.
This communication method is referred to as
"Duplex system" since different frequencies, which
is for RX and TX are used. On the channel
Duplex
configured this Mode, it is possible to receive a call
even while transmitting. TKR-750/850/751/851
transmits without muting the received audio when
the Local Mic PTT or the External PTT is on.
Note: Scan does not work on the Repeat channel. That channel is
limited for repeat operation only.
! Configuration of KPG-91D
" Configuring Operation Mode (Refer to FPRG 6.2.8
Operation Mode.)
12
Description
(Refer to 4.12 Scan Add.)
Function Reference (FUNC)
4.9
Beat Shift
This function eliminates a problem of receiver's internal
interference caused by internal oscillators.
The harmonic of oscillator implemented for the
microprocessor may interfere with receiving audio. You
can eliminate this problem by slightly shifting a frequency
of oscillator used for the microprocessor.
Each channel can be assigned as enable or disable this
function separately by KPG-91D.
! Configuration of KPG-91D
" Enabling/disabling the Beat Shift function in each
channel (Refer to FPRG 6.2.10 Beat Shift.)
4.10 TX High Power
You can select a transmission output power (high or low)
on each channel.
! Configuration of KPG-91D
" Configuring the transmission output power (high or
low) to each channel (Refer to FPRG 6.2.11 TX
High Power.)
4.11 QT Reverse Burst
This function eliminates a squelch tail noise of the end of
communication. TKR-750/850/751/851 transmits a QT
Reverse Burst code immediately at end of transmitting.
(Refer to 5 QT/DQT.)
You can configure a QT Reverse Burst using KPG-91D
! Configuration of KPG-91D
" Configuring the QT Reverse Burst (Refer to FPRG
6.2.12 QT/DQT Reverse Burst.)
Note: A DQT Turn-off code is always transmitted even if a QT
Reverse Burst is configured as disabled.
(Refer to 5.2 DQT Turn-off Code.)
Version: 1.01 USA
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