Motorola HT Series Service Manual page 36


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Rx-SW
Tx-SW
(U3701 Pin 28)
Steer Line
Voltage
(VCTRL)
RX RX VCO
Circuit
Tank
TX TX VCO
Circuit
Tank
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Pin 20
Pin 7
Pin 13 Switching Network
Pin 3
Vcc-Superfilter
Collector/RF in
Pin 4
Pin 5 RX
Rx Active
Pin 6
Pin 16
TX
Tx Active
Pin 15
Vsens
Circuit
Pin 18
Vcc-Logic
(U3701 Pin 28)
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AUX3 (U3701 Pin 2)
TRB_IN
Pin 19
TX/RX/BS
Presc
U3801
VCOBIC
RX
Bias
TX
Bias
Pin 2 Pin 1 Pins 9,11,17
Rx-I adjust
Tx-I adjust
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Pin 12 Prescaler Out
U3701 Pin 32
LO RF INJECTION
Pin 8
Matching
Low Pass
Network
Pin 14
(U3701 Pin 28)
VCC Buffers
Pin 10
TX RF Injection
Attenuator
75%
Filter