Table of Contents
Advertisement
TM-V7A/E
DESCRIPTION OF COMPONENTS
Ref No.
Use/Function
Operation/Condition/Compatibility
IC511
Low frequency amplification
IC512
EEPROM
10513
Multiplexer
Di
Voltage compensation
D4,5
Variable capacity diode tuning
D7
For lock detector rectification
For 430MHz
Ds
Lock detector
For144MHz
D9
Filter switch
For 430MHz-sub
D10, 11
Variable capacity diode tuning
D12
Loop filter switch
For430MHz
D13, 14
Variable capacity diode tuning
D15
High-frequency switch
D16
Loop filter switch
For 144MHz
D17
High-frequency switch
D18
Hetero switch
Di9
Constant voltage circuit
For frequency divider
D20
Speeds rise of Q36
D21
Hetero switch
D22
High-frequency switch
D23
Speeds rise of Q41
D24
Power switch
D25 ~ 27
Hetero switch
D28
Temperature assurance
For 144MHz
D29
Power switch
D30
Temperature assurance
For 144MHz
D31
Temperature assurance
430M driver
D32
Noise amp detection
For 144MHz
D33, 34
Antenna switch
For 430MHz
D35, 36
Antenna switch
For 144MHz
D37
APC power detection
Operates for 430MHz transmission
D38
Noise amp detection
For 430MHz
D39
APC power detection
Operates for 430MHz transmission
D40
Transmission control
D41, 42
APC power detection
Operates for 144MHz transmission
D43
Power reverse connection protection
D44 ~ 47
Hetero switch
D48
Constant voltage circuit
D49
Switch
Overvoltage protection
D50
Antenna switch
For 144MHz
D51
Reverse power connection prevention
D52
Antenna switch
D501-505
Backflow prevention
D502
Backup detection
D508
Switch
For hardware reset
D509
Power feed
For PC control
25
Advertisement
Table of Contents
