TK-3000
23
ADJUSTMENT
Common Section
Item
Condition
Measurement
Adjustment
Specifi cations / Remarks
Test-
equipment
Unit
Terminal
Unit
Parts
Method
1. Setting
1) BATT terminal voltage: 7.5V
2) SSG standard modulation
[Wide]
MOD: 1kHz, DEV: 3kHz
[Narrow]
MOD: 1kHz, DEV: 1.5kHz
2. VCO Lock
Voltage
1) Adj item: High
TX-RX ANT
(CV)
FPU
3.5V
±0.1V
Transmitter Section
Item
Condition
Measurement
Adjustment
Specifi cations / Remarks
Test-
equipment
Unit
Terminal
Unit
Parts
Method
1. Frequency
1) Adj item: High
Press [Transmit] button.
f. counter
TX-RX ANT
FPU
479.700MHz:
K,M,M3,M7,E,T2
429.700MHz:
M2,M4
389.700MHz:
M6
±50Hz
2. High
Transmit
Power
and
Protective
Current *1
1) Adj item: Low, Center, High
(3
points)
BATT terminal voltage: 7.5V
Press [Transmit] button.
Power
meter
Ammeter
FPU
4.0W
±0.1W
2.0A or less
3. Low
Transmit
Power
1) Adj item: Low, Center, High
(3
points)
BATT terminal voltage: 7.5V
Press [Transmit] button.
1.0W
±0.1W
1.0A or less
4. DQT
Balance
[Wide]
1) Adj item: Low, Center, High
(3
points)
(Signaling
Square
Wave)
Deviation meter fi lter
LPF: 3kHz
HPF: OFF
Press [Transmit] button.
Power
meter
Deviation
meter
Oscilloscope
AG
AF VTVM
TX-RX ANT
SP/MIC
connector
FPU
Make the modulation
wave into square
waves.
5. Maximum
Deviation
[Wide]
1) Adj item: Center, Low, High
(3
points)
AG:
1kHz/150mV
Deviation meter fi lter
LPF: 15kHz
HPF: OFF
Press [Transmit] button.
4.0kHz
(According to
the lager +, –)
±100Hz
6. Battery
Warning
Level
1) BATT terminal voltage: 5.9V
DVM
TX-RX BATT
terminal
FPU
Write
BATT terminal voltage: 5.9V
7. Battery
Detection
Check
(User mode)
1) BATT terminal voltage: 5.7V
PTT:
ON
Power
meter
DVM
ANT
BATT
terminal
Check
LED blinks
No transmit power
2) BATT terminal voltage: 7.5V
PTT:
ON
LED does not blink
• This transceiver is designed to make adjustments simple.
• It is not necessary to adjust the fi xed values for the DTMF-DEV, DQT-DEV, QT-DEV, and MIC sensitivity.
• The TX-DEV Narrow setting uses the Wide calculated adjustment level value.
*1: Please do not adjust High Transmit power without connecting TX power meter or 50 ohm dummy load to the ANT terminal.
If TX power meter or 50 ohm dummy load is not connected when adjusting High TX power, it will cause unstable TX power or low TX power or
unexpected symptom.
