TK-80
28
Ref. No.
Use / Function
Operation / Condition
Q72
Switching
TXB/RXB select switch
Q74
Switching
ON when TXB is Low
Q75
Switching
ON in AF mute
Q76
Switching
ON when power switch is OFF
Q77
Switching
AF mute/AM mode: ON
Q78
Switching
SSB/CW: ON
Q79
Amplifier
Amplification for sidetone
Q80,81
Switching
ON when PSK is Low
Q82,83
Switching
ON in low power or AT tune
Q507
Amplifier
LO1 (73.145~103.045MHz) output
Q508~510
LPF
Active LPF
Q511
Amplifier
19.5~49.5MHz PLL (IC502) input
Q512
Buffer amplifier
19.5~49.5MHz
Q513
Buffer amplifier
73.145~103.045MHz mixer
(IC503) input
Q514
Buffer amplifier
D/A buffer, 1.195~1.695MHz
mixer (IC504) input
Q515
Buffer amplifier
8.305~8.805MHz mixer (IC505) input
Q516
Buffer amplifier
10MHz mixer (IC504) input
Q517
Crystal OSC
62.35MHz
Q518
Buffer amplifier
62.35MHz
Q519
Buffer amplifier
62.35MHz mixer (IC505) input
Q520
Buffer amplifier
LO2 (62.35MHz) output
Q521
Amplifier
LO2 (62.35MHz) output
Q522
Buffer amplifier
D/A buffer, 0.695MHz mixer
(IC506) input
Q523
Buffer amplifier
10MHz mixer (IC506) input
Q524
Amplifier
CAR (10.695MHz) output
Q525
Crystal OSC
20MHz
Q526
Buffer amplifier
20MHz
Q527
Buffer amplifier
20MHz PLL (IC502) input
Q528
Buffer amplifier
20MHz
Q529
Amplifier
20MHz DDS (IC500,501) input
Q530
Switching
VCO1 selection
Q531
VCO1
73.145~83.544MHz
Q532
Switching
VCO2 selection
Q533
VCO2
83.545~94.544MHz
Q534
Switching
VCO3 selection
Q535
VCO3
94.545~103.045MHz
Ref. No.
Use / Function
Operation / Condition
Q536
Buffer amplifier
VCO output 73.145~103.045MHz
Q800
Switching
NB ON/OFF
Q801,802
Amplifier
NB amplifier
Q803
Amplifier
AGC for NB
Q804
Amplifier
NB amplifier
Q805
Switching
NB amplifier
Q806
Buffer amplifier
NB amplifier
Q807,808
Switching
NB amplifier
Q900
VOX amplifier
MIC amplifier
Q901
Switching
ON when IC901 10 pin is Hi
Q902
Switching
VOX ON/OFF
Q903
Switching
VOX input ON/OFF
D1~4
Lightning surge
absorption
D5,6
Switching
ON in receive, OFF in transmit
D7,8
Switching
ON in 100kHz~1.60499MHz
D9,10
Switching
ON in 1.605MHz~2.49999MHz
D11,12
Switching
ON in 2.500MHz~4.49999MHz
D13,14
Switching
ON in 4.500MHz~7.99999MHz
D15,16
Switching
ON in 8.000MHz~10.49999MHz
D17,18
Switching
ON in 10.500MHz~14.49999MHz
D19,20
Switching
ON in 14.500MHz~21.49999MHz
D21,22
Switching
ON in 21.500MHz~29.99999MHz
D23,24
Switching
ON when AIP is ON
D25,26
Switching
ON when AIP is OFF
D27
Switching
ON when MMU1 is ON
D28
Switching
ON when packet using
D29
Switching
AGC time constant
D30
Switching
Switch for sending LO1 to the
transmit or receive mixer
D31
Switching
Switch for sending LO2 to the
transmit or receive mixer
D32
Switching
10.695MHz filter select switch
D33
Switching
ON in transmit
D34
Switching
Transmit or receive selection
D35
Switching
ON in receive
D36~43
Switching
10.695MHz filter select switch
D44
Reverse flow
prevention
COMPONENTS DESCRIPTION
Содержание TK-80
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Страница 83: ...TK 80 76 INTERCONNECTION DIAGRAM ...
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Страница 103: ...TK 80 90 BLOCK DIAGRAM ...
Страница 104: ...TK 80 91 BLOCK DIAGRAM ...
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