Motorola HT Series Service Manual page 29

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Rx-SW
Tx-SW
(U201 Pin 28)
Steer Line
Voltage
(VCTRL)
RX VCO
RX
Tank Circuit
TX VCO
TX
Tank Circuit
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7[
5[
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Pin 20
Pin 7
TX/RX/BS
Pin 13
Switching Network
Pin 3 Vcc-Superfilter
Collector/RF in
Pin 4
RX
Pin 5
Rx Active
Pin 6
Pin 16 TX
Tx Active
Pin 15
Vsens
Circuit
Pin 18
Vcc-Logic
(U201 Pin 28)
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7DEOH  /HYHO 6KLIWHU /RJLF
$8; 
/RZ
+LJK
/RZ
Level Shifter
Network
TRB_IN
Pin 19
Presc
U241
VCOBIC
RX
Bias
TX
Bias
Pin 2 Pin 1 Pins 9,11,17
Rx-I adjust
Tx-I adjust
$8; 
+LJK #9
/RZ
/RZ +L=)ORDW #9
5V
AUX3 (U201 Pin 2)
AUX4 (U201 Pin 3)
Prescaler Out
Pin 12
U201 Pin 32
LO RF INJECTION
Pin 8
Matching Low Pass
Network
Pin 14
(U201 Pin 28)
VCC Buffers
Pin 10
TX RF Injection
Attenuator
75%
+LJK #9
/RZ

Filter