Kenwood TK-260G, TK-270G Adjustment, Test Equipment Required for Alignment, Repair Jig Chassis

Models: TK-270G

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ADJUSTMENT

 

 

 

TK-260G/270G

 

 

ADJUSTMENT

Test Equipment Required for Alignment

 

 

 

 

 

 

 

 

Test Equipment

 

Major Specifications

 

 

 

 

 

 

1.

Standard Signal Generator

Frequency Range

150 to 175MHz

 

(SSG)

Modulation

Frequency modulation and external modulation.

 

 

 

Output

-127dBm/0.1V to greater than -47dBm/1mV

 

2.

Power Meter

Input Impedance

50Ω.

 

 

 

Operation Frequency

150 to 175MHz or more.

 

 

 

Measurement Range

Vicinity of 10W

 

3.

Deviation Meter

Frequency Range

150 to 175MHz.

 

 

 

 

 

 

4.

Digital Volt Meter

Measuring Range

10mV to 10V DC

 

 

(DVM)

Input Impedance

High input impedance for minimum circuit loading.

 

5.

Oscilloscope

 

DC through 30MHz.

 

 

 

 

 

 

6.

High Sensitivity

Frequency Range

10Hz to 1000MHz.

 

 

Frequency Counter

Frequency Stability

0.2ppm or less.

 

7.

Ammeter

 

5A.

 

 

 

 

 

 

8.

AF Volt Meter

Frequency Range

50Hz to 10kHz.

 

 

(AF VTVM)

Voltage Range

1mV to 10V.

 

9.

Audio Generator (AG)

Frequency Range

50Hz to 5kHz or more.

 

 

 

Output

0 to 1V.

 

 

 

 

 

 

10.

Distortion Meter

Capability

3% or less at 1kHz.

 

 

 

Input Level

50mV to 10Vrms.

 

 

 

 

 

 

11.

Spectrum Analyzer

Measuring Range

DC to 1GHz or more

 

 

 

 

 

 

12.

Tracking Generator

Center frequency

50kHz to 600MHz

 

 

 

Output Voltage

100mV or more

 

 

 

 

 

 

13.

8Ω Dummy Load

 

Approx. 8Ω, 3W.

 

 

 

 

 

14.

Regulated Power Supply

 

5V to 10V, approx. 3A

 

 

 

 

Useful if ammeter equipped.

 

 

 

 

 

 

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.

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

z

JIG

Relay terminal

(+)

Test Equipment Required for Alignment z

Power module

UNIT

z z

z

 

z

z

 

z z

33

Page 33
Image 33
Kenwood TK-260G, TK-270G Adjustment, Test Equipment Required for Alignment, Repair Jig Chassis, Antenna connector adapter