Adjustment; Measuring Equipment For Alignment; Preparation; Front Panel - Kenwood TM-V71A Service Manual

TM-V71A/V71E

Measuring Equipment for Alignment

1. Digital voltmeter (D.V.M)
Input impedance: High
2. RF valve voltmeter (RF V.M)
Input impedance: 1MΩ or more, 2pF or less
Voltage range: Full scale=10mV to 300V
Measureable frequency range: Up to 450MHz
3. Frequency counter (f.counter)
Input sensitivity: About 50mV
Measureable frequency: 450MHz or more
4. DC power supply
Voltage: Variable in the range 10 to 17V
Current: 13A or more
5. Power meter
Measurement power: 60W, 30W, 10W
Impedance: 50Ω
Measurable frequency: 450MHz
6. AF valve voltmeter (AF V.M)
Input impedance: 1MΩ or more
Voltage rane: Full scale=1mV to 30V
Measurable frequency range: 50H to 10kHz
7. AF generator (AG)
Output frequency: 100Hz to 10kHz
Output voltage: 0.5mV to 1V
8. Line detector
Measurable frequency: 450MHz
9. Spectrum analyzer
Measurable frequency: 450MHz
10. Directional coupler
11. Oscilloscope
High sensitivity with horizontal input terminal
12. Standard signal generator (SSG)
The standard signal generator must be able to generate
the 1GHz band frequencies and bary the amplitude and
frequency.
Output: –133dBm to greater than –13dBm
13. Dummy load (for AF)
8Ω, about 5W
14. Noise generator
The noise generator must be able to generate noise
similar to ignition noise containing high-frequency
components of 450MHz or more.
15. Sweep generator
The sweep generator must be able to sweep the 144
and 430MHz bands.
16. Tracking generator
40

ADJUSTMENT

Preparation

• Set the controls and switches to the positions listed
below unless otherwise specifi ed.
BAND SEL/ VOL (Band A) control
BAND SEL/ VOL (Band B) control
SQL (Band A) control
SQL (Band B) control
Power switch
(as viewed from the front of the transceiver)
• To protect the signal generator, never connect the micro-
phone to the microphone socket when the receiver
section is adjusted.
• Before the power cordd is connected, make sure the
power switch is off.
• Without specification of SSG, standard modulation is
applied (MOD: 1kHz, DEV: ±3kHz, AF output: 0.63V/8Ω)

■ Front panel

q VFO
w MR
e Tuning control
r CALL
t F
y TONE
u REV
i LOW
Fully counterclockwise
Fully counterclockwise
Fully counterclockwise
Fully counterclockwise
OFF
Keypad serial data
No Connection
MIC, 600Ω impedance
GND (MIC)
PTT
GND
DC 8V, 100mA max
No Connection
Microphone socket
o PF1
!0 PF2
!1 SQL (Band A)
!2 BAND SEL/ VOL (Band A)
!3 SQL (Band B)
!4 BAND SEL/ VOL (Band B)
!5 PM
!6 Power switch