TH-K4AT/K4E
33
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the upper limit frequency on
the LCD.
(4) Repeat steps (4) to (7) of “
1
13.8V TX L power (Lower limit
frequency)” described on page 32.
L. DCS modulation balance
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DCS.BAL” on the LCD. Press the [F] key and then the
[PTT] key repeatedly to turns the “
” icon ON.
(2) When the [PTT] key is pressed to enable transmit mode, a
100Hz square waveform is internally generated and
modulated.
(3) While observing the waveforms on the oscilloscope, turn
the semi-fixed volume (VR6) to adjust the DCS modulation
waveform to a square waveform.
(4) When the DCS modulation waveform becomes a square
waveform, release the [PTT] key.
M.Tone deviation (Lower limit frequency, center
frequency, upper limit frequency)
1
Tone deviation (Lower limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DVL” on the LCD.
In this case, the “
” icon appears. Press the [F] key and
then the [PTT] key repeatedly to turn the “
” icon ON.
The current adjustment value is displayed at the lower digits
of the frequency display, and the value stored in the
EEPROM is displayed on the memory channel number
display.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the lower limit frequency on
the LCD.
(4) Press the [CALL] key to switch to the adjustment display.
(5) When the [PTT] key is pressed to enable transmit mode, a
preset tone frequency (151.4Hz) is internally generated and
modulated.
(6) Turn the encoder to change the current adjustment value
and adjust tone deviation.
(7) Press the [MENU] key to write the current adjustment value
into the EEPROM.
2
Tone deviation (Center frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DVC” on the LCD.
In this case, the “
” icon appears. Press the [F] key and
then the [PTT] key repeatedly to turn the “
” icon ON.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the center frequency on the
LCD.
(4) Repeat steps (4) to (7) of “
1
Tone deviation (Lower limit
frequency)” described on page 33.
3
Tone deviation (Upper limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DVH” on the LCD.
In this case, the “
” icon appears. Press the [F] key and
then the [PTT] key repeatedly to turn the “
” icon ON.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the upper limit frequency on
the LCD.
(4) Repeat steps (4) to (7) of “
1
Tone deviation (Lower limit
frequency)” described on page 33.
N. DCS deviation (Lower limit frequency, center frequency,
upper limit frequency)
1
DCS deviation (Lower limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DVL” on the LCD.
In this case, the “
” icon appears. Press the [F] key and
then the [PTT] key repeatedly to turn the “
” icon ON.
The current adjustment value is displayed at the lower digits
of the frequency display, and the value stored in the
EEPROM is displayed on the memory channel number
display.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the lower limit frequency on
the LCD.
ADJUSTMENT
