Abell A-80 User manual

A-80 VHF SERVICE MANUAL
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ABELL Industries Co., Ltd
A-80 VHF SERVICE MANUAL
V1.0
Contents
GENERAL……………………………………………………………………………1
REALIGNMENT……………………………………………………………………..2
DISASSEMBLY FOR REPAIR……………………………………………………..6
CIRCUIT DESCRIPTION……………………………………………………………8
PARTS LIST…………………………………………………………………………12
EXPLODED VIEW…………………………………………………………………..21
PACKING…………………………………………………………………………….26
ADJUSTMENT………………………………………………………………………27
PC BOARD VIEWS…………………………………………………………………32
SCHEMATIC DIAGRAM……………………………………………………………36
SPECIFICATIONS …………………………………………………………………. 41

A-80 VHF SERVICE MANUAL
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GENERAL
INTRODUCTION
SCOPE OF THIS MANUAL
This manual is intended for use by experienced technicians familiar with similar types of
commercial grade communications equipment. It contains all required service information
for the equipment and is current as of the publication data. Changes which may occur after
publication are covered by either Service Bulletins or Manual Revisions. These are issued
as required.
ORDERING REPLACEMENT PARTS
When ordering replacement parts or equipment information, the full part identification
number should be included. This applies to all parts: components, kits, or chassis. If the part
number is not known, include the chassis or kit number of which it is a part, and a sufficient
description of the required component for proper identification.
PERSONAL SAFETY
The following precautions are recommended for personal safety：
DO NOT transmit until all RF connectors are verified secure and any open connectors are
properly terminated.
SHUT OFF and DO NOT operate this equipment near electrical blasting caps or in an
explosive atmosphere.
This equipment should be serviced by a qualified technician only.
SERVICE
This radio is designed for easy servicing. Refer to the schematic diagrams, printed
circuit board views, and alignment procedures contained within.
Destination Number of CH RF power output
AH 16 4W
AL 16 4W
A37 16 4W

A-80 VHF SERVICE MANUAL
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REALIGNMENT
1 Mode
MODE FUNCTION
User Mode Use this mode for normal operation
PC Mode Use this mode, to make various
settings by means of the FPU
through the RS-232C port.
Manufacture
Mode
Use this mode, to realign the various
settings through the RS-232C port
during manufacture work
2 How to enter each mode
MODE PROCEDURE
User Mode Power ON
PC Mode Connect to the IBM PC compatible
machine and controlled by the FPU
User Mode PC Mode Manufacture Mode

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3 Setting acquainted
① PTT(Push-To-Talk)switch
Press this switch, then speak into the microphone to call a station. Release the switch to
receive.
② Monitor Key
Press and hold to monitor how busy the current channel is and to monitor signals being
received that don’t contain the matched QT/DQT code.
③ Channel announcer
Press this switch to get current channel information.
④ Channel selector
Rotate to select channels 1-16.
⑤ LED indicator
Lights red while transmitting, green while receiving a signal. Flashes red when the
battery voltage is low while transmitting.
⑥ Power switch/Volume control
Turn clockwise to switch the transceiver ON. Turn counterclockwise until a click sound,
to switch the transceiver OFF. Rotate to adjust the volume level.
FUNCTION MODE
① High/Low power mode
Press PTT, and turn ON to switch between powers High/Low.
② Wire cloning
Connect sample radio A with radio B with a cloning cable provided by ABELL. Turn on

A-80 VHF SERVICE MANUAL
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radio A, and then turn on radio B with [Monitor] being activated till the LED lights green.
Press [PTT] of radio B to start cloning. The LED of radio A flashes red, and radio B
flashes green during cloning. Radio B stop flashing, and LED of radio A lights red when
wire cloning is completed. Restart the radio to return to USER MODE.
PC MODE
Preface
The transceiver is programmed by using a personal computer, programming interface
(provided by ABELL) and programming software. Fig. 1 shows how the devices work.
Connection procedure
1．Connect the A-80 to the personal computer with the interface cable (UNX-05).
2．When data is transmitting from the transceiver the red LED lights.
When data is receiving by the transceiver the green LED lights.
Notes:
·The data stored in the personal computer must match the Model Name when it is written
into the EEPROM. Run the software and connect the transceiver with the personal
computer, and then turn ON.
·DO NOT press the [PTT] key during data transmission or reception.
·UNX-05 description
(PC programming interface cable: Option)
The UNX-05 is required to interface the A-80 with the computer. It has a circuit in its
D-sub connector (9-pin) case that converts the RS-232C logic level to the TTL level. The
UNX-05 connects the side panel jacks of the A-80 to the computer’s RS-232C serial port.

A-80 VHF SERVICE MANUAL
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·Programming software description
By installing programming software of A-80, users are allowed to program the
transceiver with UNX-05.
·Programming with PC
If data is transferred to the transceiver from a personal computer with software provide
by ABELL, the destination data (basic radio information) for each set can be modified.
Normally, it is not necessary to modify the destination data because their values are
determined automatically when the frequency range (frequency type) is set.
The values should be modified only if necessary.
Data can be programmed into the EEPROM in RS-232C format via the SP MIC plug.
DISASSEMBLY FOR REPAIR
Separating the case assembly from the chassis
1．Remove the two knobs ①and round nut ②.
2．Remove the two screws③.
3．Expand the right and left sides of the bottom of the case assembly, lift the chassis, and
remove it form the case assembly④.
4．Taking care not to cut the speaker lead⑤, open the chassis and case assembly.

A-80 VHF SERVICE MANUAL
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Separating the chassis from the unit
1．Remove the eleven screws⑥.
2．Remove the solder from the antenna terminal using a soldering iron then lift the unit
off⑦.
3．Remove the two screws ⑧and remove the antenna connector.
Note: When fixing the unit in the chassis, be sure to solder the antenna terminal.
⑦

A-80 VHF SERVICE MANUAL
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CIRCUIT DESCRIPTION
1. Frequency configuration
The receiver utilizes double conversion. The first IF is 45.05MHz and the second IF is
455 KHz. The first local oscillator signal is supplied from the PLL circuit.
The PLL circuit in the transmitter generates the necessary frequencies.
2. Receiver
The receiver is double conversion super heterodyne, designed to operate in the
frequency range of 136 to 150MHz, 146 to 174MHz.
1）Front-end RF amplifier
An incoming signal from the antenna is applied to an RF amplifier (Q300) after passing
through a transmit/receive switch circuit (D300 and D301 are off) and a band pass LC filter.
After the signal is amplified, the signal is filtered through a band pass filter to eliminate
unwanted signals before it is passed to the first mixer.
The voltages of these diodes are controlled by to track the CPU (IC1) center frequency of
the band pass filter.
2）First Mixer
The signal from the RF amplifier is heterodyned with the first local oscillator signal from
the PLL frequency synthesizer circuit at the first mixer (Q301) to create a 45.05MHz first
intermediate frequency (1st IF) signal. The first If signal is then fed through two monolithic
crystal filters (XF300 and 301) to further remove spurious signals.
3）IF amplifier

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The first IF signal is amplified by Q302, and then enters IC300 (FM processing IC). The
signal is heterodyned again with a second local oscillator signal within IC300 to create a
455 KHz second IF signal. The second IF signal is then fed through a 455 KHz ceramic
filter (CF300) to further eliminate unwanted signals before it is amplified and FM detected
in IC300.
4）AF amplifier
The recovered AF signal obtained from IC300 is amplified by IC500D, filtered by the
high-pass filter IC500A to eliminate signals under 300Hz. And de-emphasized by R518
and C510. The processed AF signal passes through anAF volume control and is amplified
to a sufficient level to drive a loud speaker by anAF power amplifier (IC2).
5）Squelch
Part of the AF signal from IC300 enters IC300 again, and the noise component is
amplified and rectified by a filter and an amplifier to produce a DC voltage corresponding
to the noise level.
The DC signal from the FM IC goes to the analog port of the microprocessor(IC1).IC1
determines whether to output sounds from the speaker by checking whether the input
voltage is higher or lower than the preset value.
To output sounds from the speaker, IC1 sends a high signal to the AFCO lines and turns
IC2 on through Q501, Q5, Q4, Q7 and Q6.
6）Receive signaling
QT/DQT
300Hz and higher audio frequencies of the output signal from IF IC are cut by a
low-pass filter (IC500 B/C). The resulting signal enters the microprocessor (IC1). IC1
determines whether the QT or DQT matches the preset value, and controls the MUTE and
AFCO and the speaker output sounds according to the squelch results.
3. PLL frequency synthesizer
The PLL circuit generates the first local oscillator signal for reception and the RF signal
for transmission.
1）PLL
The frequency step of the PLL circuit is 2.5 or 3.125 kHz. A 12.8 MHz reference
oscillator signal is divided at IC6 by a fixed counter to produce the 2.5 or 3.125 kHz
reference frequency. The voltage controlled oscillator (VCO) output signal is buffer
amplified by Q102, then divided in IC6 by a dual-module programmable counter. The
divided signal is compared in phase with the 2.5 or 3.125 kHz reference signal in the
phase comparator in IC6. The output signal from the phase comparator is filtered through
a low-pass filter and passed to the varactor diodes D102, D103 (RX), D100 and D101 (TX)

A-80 VHF SERVICE MANUAL
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to control the oscillator frequency.
2）VOC
The operating frequency is generated by Q104 in transmit mode and Q101 in receive
mode. The oscillator frequency is controlled by applying the VOC control voltage, obtained
form the phase comparator, to the varactor diodes (D102 and D103 in receive mode and
D100 and D101 in transmit mode). The RX pin is set low in receive mode causing Q105
turn on, and TX pin is set low in transmit mode causing Q106 turn on. The outputs from
Q104 and Q101 are amplified by Q102 and sent to the buffer amplifiers.
3）UNLOCKED DETECOR
If a pulse signal appears at the LD pin of IC6, an unlocked condition occurs, and the DC
voltage obtained form D105, R126 and C144 causes the voltage applied to the LOCK pin
of the microprocessor to go low. When the microprocessor detects this condition, the
transmitter is disabled and the error indicating alarm occurs, ignoring the push-to-talk
switch input signal.
4. Transmitter
1）Transmit audio
The modulation signal from the microphone is amplified by IC400 (1/2), passes through
a preemphasis circuit, and amplified by the other IC400 (1/2) to perform IDC operation.
The signal then passes through a low-pass filter (splatter filter)(Q402 and Q403) and cuts
3kHz and higher frequencies. The resulting signal goes to the VCO through the VCO
modulation terminal for direct FM modulation.
2）QT/DQT encoder
A necessary signal for QT/DQT encoding is generated by IC1 and FM-modulated to the
PLL reference signal. Since the reference OSC does not modulate the loop characteristic
frequency or higher, modulation is performed at the VCO side by adjusting the balance.
3）VCO and RF amplifier
The transmit signal obtained from the VCO buffer amplifier Q103, is amplified by Q202.
This amplified signal is passed to the power amplifier, Q201 and Q200, which consists of a
2 stage FET amplifier and is capable of producing up to 4W of RF power.
4）ANT switch and LPF
The RF amplifier output signal is passed through a low-pass filter network and a
transmit/receive switching circuit before it is passed to the antenna terminal. The
transmit/receive switching circuit is comprised of D200, D300 and D301. D300 and D301
turned on (conductive) in transmit mode and off (isolated) in receive mode.
5）APC

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The automatic power control (APC) circuit stabilizes the transmitter output power at a
predetermined level by sensing the drain current of the final amplifier Field effect
Transistor (FET). The voltage comparator, IC001 (2/2), compares the voltage obtained
from the above drain current with a reference voltage which is set using the
microprocessor. An APC voltage proportional to the difference between the sensed voltage
and the reference voltage appears at the output of IC001 (1/2). This output voltage
controls the gate of the FET power amplifier, which keeps the transmitter output power
constant, The transmitter output power can be varied by the microprocessor which in turn
changes the reference voltage and hence, the output power.
6）Terminal protection circuit
When the thermistor (TH200) reaches about 80°C, the protection circuit turns on Q005
to protect transmitting final amplifier (Q200) from the over heating.
5．Power supply
A 5V reference power supply [5V] for the control circuit is derived from an internal
battery. This reference is used to provide a 5V supply in transmit mode [TXC], a 5V supply
in receive mode [RXC], and a 5V supply common in both modes [PLC] based on the
control signal sent from the microprocessor.
6．Control system
The IC1 CPU operates at 18.0178 MHz. This oscillator has a circuit that shifts the
frequency according to the EEPROM data.

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PARTS LIST
A-80 VHF AH:136-174MHz（A）BOM
Ref. No. Specification Package Description Quantity Part No.
Chip Resistor
1 0R 0603 ±5% 5 R24 R26 R27 R28 L401
2 0.39R 1206 ±5% 3 R017 R018 R019
3 10R 0603 ±5% 1 R1
4 100R 0603 ±5% 1 R406
5 330R 0603 ±5% 3 R5 R6 R16
6 390R 0603 ±5% 1 R020
7 470R 0603 ±5% 1 R401
8 680R 0603 ±5% 2 R014 R015
9 820R 0603 ±5% 2 R405 R425
10 1K 0603 ±5% 11 R7 R8 R12 R17 R22 R30
R32 R34 R42 R48 R423
11 1.5K 0603 ±5% 1 R409
12 1.8K 0603 ±5% 1 R400
13 2.2K 0603 ±5% 1 R53
14 2.4K 0603 ±5% 1 R412
15 3.3K 0603 ±5% 3 R413 R422 R021
16 4.7K 0603 ±5% 8 R11 R13 R14 R15 R016 R39
R54 R60
17 5.6K 0603 ±5% 1 R004
18 6.8K 0603 ±5% 1 R411
19 8.2K 0603 ±5% 1 R134
20 10K 0603 ±5% 7 R007 R33 R35 R52 R59
R417 R421
21 12K 0603 ±5% 2 R135 VR100
22 15K 0603 ±5% 3 R136 R407 R408
23 18K 0603 ±5% 1 R403
24 20K 0603 ±5% 3 R29 R131 R132
25 33K 0603 ±5% 4 R414 R415 R418 R419
26 47K 0603 ±5% 4 R001 R006 R40 R57
27 51K 0603 ±5% 1 R410
28 56K 0603 ±5% 1 R139
29 68K 0603 ±5% 2 R10 R55
30 100K 0603 ±5% 9 R002 R31 R41 R43 R44 R49
R50 R51 R402

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31 100K 0603 ±1% 1 R38
32 150K 0603 ±1% 7 R008 R009 R010 R011
R012 R013 R37
33 180K 0603 ±5% 1 R003
34 270K 0603 ±1% 1 R56
35 750K 0603 ±5% 1 R404
36 1M 0603 ±5% 2 R005 R9
37 1.8M 0603 ±5% 2 R416 R420
38 NC 0603 3 R61 R133 R424
Resistor Network
39 1K×4 4×0603 YC164-JR-071K 3 CP1 CP2 CP4
40 100K×4 4×0603 YC164-JR-07100K 1 CP3
Adjustable Resistor
41 68K φ3 EVM3ESX50BS4 1 VR101
42 22K φ3 EVM3YSX50BE4 1 VR400
Chip Capacitance
43 5PF 0402 COG，±0.1PF，50V 1 C343
44 10PF 0402 COG，±0.5PF，50V 2 C411 C344
45 22PF 0402 COG，±5%，50V 2 C7 C8
46 100PF 0402 COG，±5%，50V 3 C29 C30 C005
47 220PF 0402 COG，±5%，50V 3 C18 C23 C36
48 470PF 0402 X5R，±10%，16V 16
C001 C002 C004 C006
C010 C011 C34 C35 C40
C41 C43 C52 C53 C402
C409 C412
49 680PF 0402 X5R，±10%，16V 1 C415
50 820PF 0402 X5R，±10%，16V 1 C419
51 1000PF 0402 X5R，±10%，16V 3 C008 C009 C405
52 3300PF 0402 X5R，±10%，16V 2 C414 C418
53 3900PF 0603 X5R，±10%，16V 1 C9
54 0.01UF 0402 X5R，±10%，16V 8 C1 C4 C47 C48 C50 C51
C416 C420
55 0.01UF 0603 X5R，±10%，16V 0
56 0.022UF 0402 X5R，±10%，16V 2 C404 C406
57 0.027UF 0402 X5R，±10%，16V 2 C10 C403
58 0.033UF 0603 X5R，±10%，16V 1 C57
59 0.047UF 0402 X5R，±10%，16V 2 C413 C417
60 0.1UF 0402 X5R，±10%，16V 2 C003 C11
61 0.1UF 0603 X5R，±10%，16V 12
C12 C26 C27 C28 C32 C33
C37 C49
C56 C58 C400 C407

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62 0.22UF 0603 X5R，±10%，16V 1 C148
63 1UF 0805 Y5V, +80,-20%,25V 2 C31 C122
64 1UF 1206 Y5V, +80,-20%,25V 1 C42
65 NC 0402 1 C345
Tan Capacitance
66 0.47UF A type ±20% 6.3V 1 C5
67 2.2UF A type ±20% 6.3V 2 C408 C421
68 4.7UF A type ±20% 6.3V 3 C55 C147 C410
69 6.8UF A type ±20% 10V 1 C012
70 10UF A type ±20% 6.3V 3 C6 C39 C401
Inductor
71 BLM11A601S
BLM18AG601SN1D 0603 General Bead 600R 6 L1 L3 L4 L5 L400 L402
72 MLF1608DR22K 0603 LF Multi layer
inductor 1 L2
73 LQH32MN1R0M23 1210 1UH\Power Inductor 1 L200
Diode
74 1SS372 SOT-323 DIODE 1 D401
75 DAN222 SOT-416 DIODE 1 D400
77 LED-02-0603QGC D0603 Green Light 1 LED1
78 LED-02-0603QRC D0603 Red Light 1 LED2
Triode
79 2SA1362 SOT-23 TRANSISTOR 1 Q11
80
80
2SC4617（BR）
2SC4617（BR）
SOT-416
SOT-416
TRANSISTOR
TRANSISTOR
2
2
Q402 Q403
Q402 Q403
81 2SC4919 SOT-523 TRANSISTOR 1 Q400
82 DTA114YE SOT-416 TRANSISTOR 2 Q10 Q13
83 DTC114EE SOT-416 TRANSISTOR 6 Q2 Q3 Q003 Q004 Q12 Q14
84 DTC114TE SOT-416 TRANSISTOR 1 Q005
85 FMMT717 SOT-23 TRANSISTOR 1 Q001
86 2SK1824 SOT-416 FET 2 Q002 Q401
IC
87 NJM2100V SSOP8 IC (AUDIO AMP) 1 IC400
88 AT24C08(SI27) SOP8 EEPROM 1 IC3
89 µPD78F0512GA(T)-8EU-A QFP48 CPU（model after
writing） 1 IC1
90 WTV040-20S SOP20 Phonetics IC 1 IC5
91 NJM2904V SSOP8 IC(APC) 1 IC001
92 XC6201P502PR SOT-89-3L IC（5V constant
voltage） 1 IC4

A-80 VHF SERVICE MANUAL
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Crystal
93 18.0178MHz 6.0×3.5×1.0 18.0178MHz 1 X1
Fuse
94 3A-32V 1206 R429003-3A-32V 1 FU1
Connector
95 L10 10PIN
FFC/FPC
Connector/(Underside
connecting and upside
pressing /0.5mm)
1 CN1
A-80 VHF AH:136-174MHz（B）BOM
Ref.
No. Specification Package Description Quantity Part No.
Chip Resistor
1 0R 0402 ±5% 2 C303 L100
2 0R 0603 ±5% 12
L111 R140 R141 R205 R300
R302 R312
R315 R318 R327 R502 R506
3 0R 1206 ±5% 1 L312
4 10R 0603 ±5% 5 R2 R103 R142 R517 R218
5 18R 0603 ±5% 1 R210
6 33R 0603 ±5% 1 R326
7 47R 0603 ±5% 4 R100 R204 R206 R316
8 100R 0603 ±5% 5 R102 R114 R120 R328 R331
9 150R 0603 ±5% 5 R18 R112 R128 R311 R323
10 220R 0603 ±5% 1 R125
11 270R 0603 ±5% 4 R121 R130 R200 R201
12 330R 0603 ±5% 5 R108 R111 R209 R211 R212
13 470R 0603 ±5% 2 R314 R329
14 680R 0603 ±5% 2 R109 R123
15 1K 0603 ±5% 4 R105 R107 R127 R519
16 1K 0603 ±1% 1 R508
17 1.2K 0603 ±5% 1 R332
18 1.5K 0603 ±5% 1 R214
19 1.8K 0603 ±1% 4 R207 R338 R339 R500
20 2.2K 0603 ±5% 2 R20 R325
21 3.3K 0603 ±5% 6 R124 R203 R215 R324 R336
R337
22 3.9K 0603 ±5% 2 R213 R334
23 4.7K 0603 ±5% 2 R25 R137
24 5.6K 0603 ±5% 4 R509 R513 R516 R518

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25 10K 0603 ±5% 3 R19 R104 R110
26 10K 0603 ±1% 1 R501
27 22K 0603 ±5% 1 R510
28 33K 0603 ±5% 1 R3
29 47K 0603 ±5% 7 R4 R118 R126 R138 R202 R208
R521
30 56K 0603 ±5% 3 R23 R320 R322
31 68K 0603 ±5% 1 R308
32 91K 0603 ±5% 1 R514
33 100K 0603 ±5% 18
R113 R115 R116 R303 R304
R305 R306 R307 R309 R313
R317 R319 R321 R340 R504
R507 R522 R523
34 120K 0603 ±5% 5 R122 R143 R335 R505 R515
35 180K 0603 ±5% 1 R524
36 220K 0603 ±5% 1 R511
37 270K 0603 ±5% 1 R520
38 390K 0603 ±5% 2 R333 R512
39 470K 0603 ±5% 2 R21 R503
40 680K 0603 ±5% 1 R330
41 NC 0603 ±5% 3 R310 R341 TH300
Resistor Network
42 1K×4 4×0603 YC164-JR-071K 1 CP100
Thermo sensitive
Chip
43 NCP18WB473J03RB 0603
Negative Temperature
Coefficient
Thermistor（NTC）
1 TH200
Chip Capacitance
44 0.5PF 0402 COG，±0.1PF，50V 2 C107 C129
45 0.75PF 0402 COG，±0.1PF，16V 1 C104
46 1PF 0402 COG，±0.1PF，16V 1 C304
47 1.5PF 0402 COG，±0.1PF，16V 1 C121
48 2PF 0402 COG，±0.1PF，16V 3 C306 C308 C328
49 3PF 0402 COG，±0.1PF，16V 1 C200
50 3.6PF 0402 COG，±0.1PF，16V 1 C120
51 5PF 0402 COG，±0.1PF，16V 1 C106
52 6PF 0402 COG，±0.1PF，16V 3 C123 C330 C336
53 7PF 0402 COG，±0.1PF，16V 1 C310
54 8PF 0402 COG，±0.1PF，16V 2 C214 C320
55 9PF 0402 COG，±0.1PF，16V 1 C203

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56 10PF 0402 COG，±0.5PF，16V 7 C101 C153 C154 C201 C205
C206 C222
57 12PF 0402 COG，±5%，16V 2 C211 C229
58 15PF 0402 COG，±5%，16V 2 C110 C301
59 16PF 0402 COG，±5%，16V 1 C307
60 18PF 0402 COG，±5%，16V 4 C125 C130 C212 C309
61 20PF 0402 COG，±5%，16V 5 C202 C305 C322 C329
C339
62 22PF 0402 COG，±5%，16V 2 C112 C204
63 27PF 0402 COG，±5%，16V 3 C208 C351 C352
64 30PF 0402 COG，±5%，16V 1 C332
65 33PF 0402 COG，±5%，16V 2 C109 C349
66 39PF 0402 COG，±5%，16V 2 C300 C356
67 56PF 0402 COG，±5%，16V 3 C118 C213 C517
68 82PF 0402 COG，±5%，16V 1 C361
69 100PF 0402 COG，±5%，16V 4 C16 C141 C142 C143
70 220PF 0402 COG，±5%，16V 2 C354 C355
71 470PF 0402 X5R，±10%，16V 27
C38 C44 C103 C111 C128
C134 C209 C217 C223
C224 C227 C231 C233
C312 C313 C314 C315
C316 C317 C318 C324
C326 C327 C331 C337
C357 C502
72 470PF 0603 X5R，±10%，16V 1 C100
73 1000PF 0402 X5R，±10%，16V 30
C14 C21 C45 C102 C117
C127 C135 C136 C146
C149 C150 C156 C157
C207 C210 C220 C221
C225 C228 C230 C232
C311 C319 C323 C334
C335 C340 C348 C512
C516
74 4700PF 0402 X5R，±10%，16V 1 C360
75 5600PF 0402 X5R，±10%，16V 1 C514
76 0.01UF 0402 X5R，±10%，16V 15
C22 C25 C119 C131 C132
C133 C151 C216 C338
C341 C342 C346 C358
C506 C507
77 0.012UF 0402 X5R，±10%，16V 1 C505
78 0.022UF 0402 X5R，±10%，16V 2 C508 C509

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79 0.033UF 0402 X5R，±10%，16V 1 C515
80 0.047UF 0402 X5R，±10%，16V 2 C510 C518
81 0.047UF 0603 X5R，±10%，16V 1 C504
82 0.1UF 0402 X5R，±10%，16V 2 C219 C350
83 0.1UF 0603 X5R，±10%，16V 20
C2 C3 C17 C19 C46 C137
C139 C144 C145 C215
C226 C234 C333 C347
C353 C362 C363 C500
C511 C513
84 0.22UF 0603 X5R，±10%，16V 1 C364
85 0.22UF 0402 X5R，±10%，16V 1 C124
86 0.47UF 0603 X5R，±10%，16V 1 C20
87 1UF 0603 Y5V,＋80%－20%,25V 1 C503
88 1UF 0805 Y5V,＋80%－20%,25V 2 C13 C218
89 NC 0603 1 C155
90 NC 0402 12
C01 C02 C03 C04 C05 C06
C07 C08 C113 C115 C302
C321
Adjustable Capacitance
91 10PF φ2 TZVY2Z100A001R00 3 TC100 TC101 TC301
Tan Capacitance
92 0.22UF A type ±20% 10V 1 C114
93 0.68UF P type ±20% 10V 1 C116
94 4.7UF A type ±20% 6.3V 3 C138 C152 C325
95 6.8UF A type ±20% 10V 1 C140
96 10UF A type ±20% 6.3V 3 C15 C359 C501
97 100UF C type ±20% 6.3V 1 C24
Inductor
98 BLM11A601S
BLM18AG601SN1D 0603 Bead 600R 7 L106 L110 L114 L117
L214 L306 L314
99 BLM21PG300SN1 0805 Bead 3 L6 L208 L211
100 LQW31HN23NJ03L 1206 HF Wound Inductor 1 L109
101 LQW18AN27NJ00 0603 HF Wound Inductor 1 L212
102 LQW18AN33NJ00 0603 HF Wound Inductor 1 L304
103 LQW2BHN33NJ03L 0805 HF Wound Inductor 1 L209
104 LQW31HN33NJ03L 1206 HF Wound Inductor 1 L103
105 LQW18AN47NJ00 0603 HF Wound Inductor 2 L116 L301
106 LQW18AN56NJ00 0603 HF Wound Inductor 3 L302 L303 L307
107 LQW18AN68NJ00 0603 HF Wound Inductor 1 L309
108 LQG18HN68NJ00 0603 HF Multi layer
Inductor 1 L213

A-80 VHF SERVICE MANUAL
--19--
109 LQG11A82NJ
LQG18HN82NJ00 0603 HF Multi layer
inductor 1 L105
110 MLK1005SR10JT00
LQG15HNR10J02D 0402 HF Multi layer
inductor 2 L115 L311
111 MLF1608A1R0K 0603 LF Multi layer
Inductor 2 L315 L316
112 NLV25T-1R0J-PF 2520 HF Wound Inductor 1 L210
113 NLV25T-R56J-PF 2520 HF Wound Inductor 2 L310 L313
114 1008CS-751XJBC
/NLV25T-R75J-PF 2520 HF Wound Inductor 1 L308
115 NLV25T-2R2J-PF 2520 HF Wound Inductor
1 L204
116 MLF1608A3R3K 0603 LF Multi layer
Inductor 1 L104
117 LFLK21254R7K 0805 LF Multi layer
Inductor 1 L118
118 MLF1608E6R8K 0603 LF Multi layer
Inductor 5 L001 L101 L102 L107
L108
119 NC 0603 8 L01 L02 L03 L04 R01 R02
R03 R301
Air-core coil
120 0.6×φ1.6×3TR P type AIR-CORE COIL with
Pin (E) 1 L206
121 0.4×φ1.6×4TR P type AIR-CORE COIL with
Pin (E) 1 L205
122 0.4×φ1.8×4TR P type AIR-CORE COIL with
Pin (E) 2 L201 L203
123 0.4×φ1.6×5TR P type AIR-CORE COIL with
Pin (E) 2 L202 L207
124 0.4×φ1.6×7TR P type AIR-CORE COIL with
Pin (E) 1 L300
Diode
125 NC 0603 1 D106
126 HSC277 SOD-523 DIODE 4 D201 D300 D301 D307
127 HVC350B SOD-523 Varactor 5 D302 D303 D304 D305
D306
128 ISR154-400 SOD-106 DIODE 1 D2
129 ISV214 SOD-323-A Varactor 1 D104
130 ISV283 SOD-523 Varactor 4 D100 D101 D102 D103
131 MA2S077 SOD-523 DIODE 1 D200
132 MA2S111 SOD-523 DIODE 2 D105 D107
Triode

A-80 VHF SERVICE MANUAL
--20--
133 2SA1362 SOT-23 TRANSISTOR 2 Q4 Q9
134 2SC2714 SOT-23 TRANSISTOR 1 Q302
135 2SC4617 SOT-416 TRANSISTOR 2 Q107 Q500
136 2SC4988 SOT-89-3L TRANSISTOR 1 Q202
137 2SC5108 SOT-416 TRANSISTOR 3 Q100 Q102 Q103
138 2SK1875-V SOT-323 FET 2 Q101 Q104
139 2SK1824 SOT-416 FET 1 Q501
140 2SK3475 SOT-89-3L FET 1 Q201
141 2SK3476 2-5N1A FET 1 Q200
142 AO3400 SOT-23 FET 1 Q6
143 3SK318 SOT-343 FET 2 Q300 Q301
144 DTA114EE SOT-416 TRANSISTOR 1 Q304
145 DTA114YE SOT-416 TRANSISTOR 1 Q303
146 DTA143TE SOT-416 TRANSISTOR 2 Q105 Q106
147 DTC114EE SOT-416 TRANSISTOR 3 Q5 Q7 Q8
148 NC 1 Q01
IC
149 TA7368F SOP10 AUDIO POWER AMP 1 IC2
150 MB1511PFV SSOP20 PLL 1 IC6
151 TA31136FN TSOP16 IF SYSTEM 1 IC300
152 NJM2902-A SSOP14 AUDIO AMP 1 IC500
Crystal
153 12.8MHZ 3.2×5mm NT5032S 1 X100
Touch-key
154 TSHW-2VSL 7×2.5mm 2 S1 S2
A-80 VHF AH: 136-174MHz Weld Part
Ref.
No. Material Specification Package Description Quantit
y Part No.
1 Crystal 44.595MHz UM-5 1 X300
2 Crystal
Filter 45.05MHz UM-5
Couple
Assemble 2 XF300 XF301
3 Ceramic Filter LTM455FW 455 1 CF300
4 Frequency
Discriminator JTBM455C24 1 CD300
5 Mic FOM9745P-G421
CZ034CP421-X15(GP)
φ9.7
×4.5mm 1 M1
6 PTT 180(g） 3×6mm 1 S3
7 Microphone
-Jack ST-106(gilded) 1 J2