Motorola IC-T81E ユーザーズマニュアル

4 - 6

Shift register

Prescaler

Phase
detector

Loop

filter

Programmable
counter

Programmable
divider

X1

13.8 MHz

Q311, 
Q312, 
D302, 
D311  

144 MHz VCO

50MHz RX VCO

Buff.

D802,
D803

Q807

Q313,
D312

3
4
5

PSTB

CLK
DATA

to transmitter circuit

to 1st mixer circuit 
(IC601, pin 1)

16

13

19

Q301, 
Q302, 
D301  

Q811, 
Q812

VCO BOARD

8

Loop

filter

Q804,
Q805

50 MHz TX VCO

Buff.

Q342

Buff.

Q313

2

to transmitter circuit

Q321, 
Q322, 
D321, 
D322  

430 MHz VCO

Q341, D341

TX/RX

SW

Buff.

Q822

Amp.

Buff.

Q323

D804,
D805

to transmitter circuit

TX/RX

SW

Q823

Amp.

TUNE
CTRL

Q803

"LOCKV" signal
to the IC1, pin 5

3
4
5

CLK
DATA
STB

1

5

16

1200MHz VCO

Q350, 
D351, 
D352  

Buff.

Q351, 
Q354

D804,
D805

TX/RX

SW

Q823

Amp.

to transmitter circuit

Buff.

Q816

4

5

6

7

11

12

13

14

Q1

Q2

Q3

Q4

Q8

Q7

Q6

Q5

Outputs VHVCO3 regulator control
signal.

Outputs VLVCO3 regulator control
signal.

Outputs 6MVCO3 regulator control
signal.

Outputs VCO shift signal for SHF,
UHF, 144 MHz and 50 MHz.

Outputs 12VCO3 regulator control sig-
nal.

Outputs UHVCO3 regulator control
signal.

Outputs UHF TX and RX regulator
control signal.

Outputs 1200 MHz TX and RX regula-
tor control signal.

4

6

7

11

12

13

Outputs 300 MHz band RX regulator
control signal.

Outputs AM mode regulator control
signal.

Outputs WFM band RX switching con-
trol signal.

Outputs WFM band RX regulator con-
trol signal.

Outputs 50 MHz band TX and RX reg-
ulator control signal.

Outputs VHF band TX and RX regula-
tor control signal.

Q1

Q3

Q4

Q8

Q5

Q6