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DESCRIPTION OF COMPONENTS
FINAL UNIT (X45-3370-21)
TRC-70
Component
Use/Function
Operation/Condition/Compatibility
IC1
8V AVR
Input 13.6V, output 8V.
1C2
5V AVR
Input 13.6V, output 5V.
1C101
Band data decode
See to circuit description.
Q1
Pre drive amplifier
Wide freq. amplifier.
| O2, 3
Drive amplifier
Pushpuil amprifier.
Q4,5
Final amplifier
Pushpull amprifier.
Q6
Bias voltage supply to O4, 5.
Current amplifier when transmit.
Q7
Over voltage detection
Turn on when voltage (approx. 20V or more).
Q8
Power switch relay control
On when power switch is turned on.
Q101, 102 | TX/RX select relay switch
Turn ON when transmit (TX terminal : 5V).
Q103, 104 | TX/RX select relay switch
Turn ON when receive (RX terminal : 5V).
Q105
RX protection circuit switch
Turn ON when operate to protection circuit (Normaly OFF).
Q106
RX protection circuit detection
Q107
LPF select relay switch
Turn ON 5~6.9999MHz (LPF3B terminal : 5V).
Q108
LPF select relay switch
Turn ON 18~29.9999MHz (LPF7B terminal : 5V).
Q109
LPF select relay switch
Turn ON 9~13.9999MHz (LPF5B terminal : 5V).
Q110
LPF select relay switch
Turn ON 7~8.9999MHz (LPF4B terminal : 5V).
Q111
LPF select relay switch
Turn ON 14~17.9999MHz (LPF6B terminal : 5V).
Q112
LPF select relay switch
Turn ON
~2.9999MHz (LPF1B
terminal : 5V).
Q113
LPF select relay switch
Turn ON 3~4.9999MHz (LPF2B terminal : 5V).
Q114
LPF select relay switch
Turn ON 14~17.9999MHz (LPF6 terminal : 5V),
Q115
LPF select relay switch
Turn ON 18~29.9999MHz (LPF7 terminal : 5V).
Q116
LPF select relay switch
Turn ON
~2.9999MHz (LPF1 terminal : 5V).
Q117
LPF select relay switch
Turn ON 3~4.9999MHz (LPF2 terminal : 5V).
Q118
LPF select relay switch
Turn ON 9~13.9999MHz (LPFS5 terminal : 5V).
Q119
LPF select relay switch
Turn ON 5~6.9999MHz (LPF3 terminal : 5V).
Q120
LPF select relay switch
Turn ON 7~8.9999MHz (LPF4 terminal : 5V).
D1
Temperature compensation of Q1 bias current
Temperature compensation of pre drive transistor Q1.
D2
Temperature compensation of Q2, 3 bias current
Temperature compensation of drive transister
Q2.
D3
Temperature compensation of 04, 5 bias current
Temperature compensation of final transister Q4.
D4
Q6 temperature compensation
Temperature compensation of final bias transister Q6.
D5
Power supply reverse current protection
Power voltage supply.
D6
AVR
Over voltage protection.
D7
Surge absorb for relay
Relay for power switch.
D8
Surge absorb for moter
Fan motor.
D101
Reflection wave rectifier
RF rectifier.
D102
Foward wave rectifier
PF rectifier.
D103
Antenna current rectifier
PF rectifier.
D104
Lightning surge protection
Surge absorb to ANT terminal.
D105
Surge absorb for relay
For transmit relay.
D106
Surge absorb for relay
For receive relay.
D107
Surge absorb for relay
5~6.9999MHz. LPF relay.
D108
Surge absorb for relay
18~29.9999MHz.
LPF relay.
D109
Surge absorb for relay
9~13.9999MHz. LPF relay.
D110
Surge absorb for relay
7~8.9999MHz. LPF relay.
Di11
Surge absorb for relay
14~17.9999MHz.
LPF relay.
D112
Surge absorb for relay
0.1000~2.9999MHz.
LPF relay.
D113
Surge absorb for relay
3~4,.9999MHz. LPF relay.
TH1
Temperature protection detection
Approx 55°C when fan motor operates.
Approx 45°C when fan motor stoped.
Approx 90°C when RF power droped.
Approx 80°C when RF power recovered.
27
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