Adjustment - Kenwood TKR-750 Service Manual

TKR-750
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. Voltmeter
12. 4Ω Dummy Load
The following parts are required for adjustment
• Test cable for local microphone
1 : NC
2 : +B
3 : GND
4 : PTT/TXD1 (PC serial data from radio)
5 : MIC GND
6 : MIC
7 : HOOK/RXD1 (PC serial data to radio)
8 : NC
1 8
MIC connector (Front panel view)
Test Channel (Default)
No. K,E
RX
1 146.10
2 160.10
3 173.90
4 150.10
5 155.10
6 165.10
7 170.10
8 158.50
9 161.50
10 136.10
11 151.90
12 152.10
40

ADJUSTMENT

Frequency Range
Modulation
Output
Input Impedance
Operation Frequency
Measurement Capability
Frequency Range
Measuring Range
Accuracy
Frequency Range
Frequency Stability
Frequency Range
Voltage Range
Frequency Range
Output
Capability
Input Level
Measuring Range
Input Impedance
K2
TX RX
146.00 136.10
160.00 143.10
174.00 149.90
150.00 146.10
155.00 155.90
165.00 140.10
170.00 148.10
161.50 147.50
158.50 149.00
136.00 151.10
151.95 152.10
152.00 173.90
Major Specifications
136 to 174MHz
Frequency modulation and external modulation
0.1µV to greater than 1mV
50Ω
136 to 174MHz or more
Vicinity of 50W
136 to 174MHz
1 to 20V DC
High input impedance for minimum circuit loading
DC through 30MHz
10Hz to 600MHz
0.2ppm or less
13A or more
50Hz to 10kHz
3mV to 3V
50Hz to 5kHz
0 to 1V
3% or less at 1kHz
50mV to 10Vrms
10 to 1.5V DC or less
50kΩ/V or greater
Approx. 4Ω, 5W
• The following test cables are recommended.
To AG
AF VTVM
8pin
TX
Test cable for microphone input
136.00
143.00
150.00
To connect the TX-RX unit A/2 (CN14) to the TX-RX unit
146.00
B/2 (CN602) while in servicing, you can use the 36-pin flat
156.00
cable, E37-0979-05, which is available from the KENWOOD
140.00 parts center.
148.00
149.00
147.50
151.95
152.00
174.00
Flat cable (36-pin) about 256mm
Plug cord
Part No. E30-3360-08
8pin
HOOK
(BRN)
MIC
(WHT)
MICG
PTT
(YEL)
PTT SW
PTT
Cut
(RED)