Adjustment - Kenwood TK-260G Service Manual

Test Equipment Required for Alignment
Test Equipment
1. Standard Signal Generator
(SSG)
2. Power Meter
3. Deviation Meter
4. Digital Volt Meter
(DVM)
5. Oscilloscope
6. High Sensitivity
Frequency Counter
7. Ammeter
8. AF Volt Meter
(AF VTVM)
9. Audio Generator (AG)
10. Distortion Meter
11. Spectrum Analyzer
12. Tracking Generator
13. 8 Dummy Load
14. Regulated Power Supply
The following parts are required for adjustment
1. Antenna connector adapter
The antenna connector of this radio uses an SMA terminal.
Use an antenna connector adapter [SMA(f) – BNC(f) or
SMA(f) – N(f)] for adjustment. (The adapter is not provided as
an option, so buy a commercially-available one.)
Note
When the antenna connector adapter touches the knob,
draw out the knob to mount the connector.

ADJUSTMENT

Frequency Range
Modulation
Output
Input Impedance
Operation Frequency
Measurement Range
Frequency Range
Measuring Range
Input Impedance
Frequency Range
Frequency Stability
Frequency Range
Voltage Range
Frequency Range
Output
Capability
Input Level
Measuring Range
Center frequency
Output Voltage
TK-260G/270G
Major Specifications
150 to 175MHz
Frequency modulation and external modulation.
-127dBm/0.1 V to greater than -47dBm/1mV
50 .
150 to 175MHz or more.
Vicinity of 10W
150 to 175MHz.
10mV to 10V DC
High input impedance for minimum circuit loading.
DC through 30MHz.
10Hz to 1000MHz.
0.2ppm or less.
5A.
50Hz to 10kHz.
1mV to 10V.
50Hz to 5kHz or more.
0 to 1V.
3% or less at 1kHz.
50mV to 10Vrms.
DC to 1GHz or more
50kHz to 600MHz
100mV or more
Approx. 8 , 3W.
5V to 10V, approx. 3A
Useful if ammeter equipped.
Repair Jig (Chassis)
1. Jig (chassis : Part No. A10-4009-03) for adjustment.
2. Use the jig as follows.
Place the TX-RX unit on the jig and fix it with thirteen
screws .
Solder the antenna terminal of the TX-RX unit.
3. Supply power from an external power supply.
Relay terminal : + (7.5)
Jig (Chassis) : -
Coaxial antenna connector
JIG
Relay terminal
(+)
z
z
z
z
Power module
UNIT
z
z
z
z
z
33