Kenwood 144MHz FM TRANSCEIVER K2E Service Manual page 40

TH-K2AT/K2E/K2ET
Item Condition
8) LCD display: P13C,
Frequency: 145.000MHz
PTT: ON
Low power
9) LCD display: P13H,
Frequency: 145.995MHz
PTT: ON
3.Battery Switch to Adjustment mode
terminal and carry out the operations
reference for adjustment item B.
voltage (Refer to page 28)
Adjust/ TX power: Low
Check 1)LCD display: BAT
Frequency: 145.000MHz
Frequency: 146.000MHz
PTT: ON
Battery terminal voltage: 7.5V
(Adjust the output voltage from DC power supply until the voltage at the
battery terminal becomes 7.5V while the transceiver is transmitting.)
To exit from the Adjustment
Mode, turn the transceiver
power OFF and then ON.
2)Frequency: 145.000MHz
Frequency: 146.000MHz
PTT: ON
Battery terminal voltage: 6.4V
(Adjust the output voltage from DC power supply until the voltage at the
battery terminal becomes 6.4V while the transceiver is transmitting.)
4.DCS Switch to Adjustment mode
modulation and carry out the operations
balance for adjustment item L.
(Refer to page 32)
Detector: +P, –P
HPF: OFF
De-emphasis: OFF
TX power: Low
1)LCD display: DCS.BAL
Frequency: 145.000MHz
Frequency: 146.000MHz
PTT: ON
5.MAX DEV To exit from the Adjustment
Mode, turn the transceiver
power OFF and then ON.
MIC terminal input
AG: 1kHz/80mV
Detector: +P, –P
HPF: OFF
De-emphasis: OFF
TX power: Low
40
ADJUSTMENT
Measurement
Test equipment
Power meter
Am meter
DC power supply
DVM
(E, E3)
(K, K2, M, M2)
(E, E3)
(K, K2, M, M2)
Linear detector
Oscilloscope
LPF: 3kHz
(E, E3)
(K, K2, M, M2)
Linear detector
AG
Oscilloscope
LPF: 15kHz
Unit Terminal Unit Parts
TX-RX ANT Encoder
(A/3) [MENU]
Encoder
[MENU]
[MENU]
LCD
LCD
TX-RX ANT
(A/3)
VR6
ANT VR5
MIC
Adjustment
Specifications/
Remarks
Method
Write 0.5W ±0.05W
0.8A or less
Write
Write
Check All segments
are lighted.
Check 4 to 6 seg-
ments are
lighted.
By tuning the
VR6, adjust
the modulation
wave until
if becomes the
square wave.
4.2kHz ±0.1kHz
According to the
larger +, –.
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