Ajetrays AR-440 Manuel utilisateur

UHF FM TRANSCEIVER

AR-440

SERVICE MANUAL

CIRCUIT DESCRIPTION ............................ 2

SEMICONDUCTOR DATA ........................ 8

COMPONENTS DESCRIPTION ................ 9

PARTS LIST ............................................. 10

EXPLODED VIEW.................................... 17

PACKING ................................................. 18

RESETTING THE TRANSCEIVER ........... 19

ADJUSTMENT ........................................ 20

TERMINAL FUNCTION ........................... 27

PC BOARD

DISPLAY UNIT (X54-3450-10) ............ 28

TX-RX UNIT (X57-686X-XX)............... 30

SCHEMATIC DIAGRAM.......................... 34

BLOCK DIAGRAM ................................... 38

LEVEL DIAGRAM .................................... 40

SPECIFICATION ................... BACK COVER

CONTENTS

AJETRAYS LLC 2010

Microphone

(T91-0641-05)

Cabinet

Panel assy

(A62-1102-03)

Knob (Encoder)

(K29-9293-03)

Key top

(K29-9291-01)

Knob (Volume)

(K29-9292-03)

(A01-2193-01)

AR-440

Frequency Configuration

The receiver utilizes double conversion. The first IF is

49.95MHz and the second IF is 450kHz. The first local oscil-

lator signal is supplied from the PLL circuit.

The PLL circuit in the transmitter generates the necessary

frequencies. Figure 1 shows the frequencies.

CIRCUIT DESCRIPTION

Receiver System

The receiver is double conversion superheterodyne. The

frequency configuration is shown in Figure 1.

■Front-end RF Amplifier

An incoming signal from the antenna is applied to an RF

amplifier (Q353) after passing through a transmit/receive

switch circuit (D603, D604 and D605 are off) and a BPF

(L359, L358 L360, L361 and varactor diodes : D353, D354,

D355). After the signal is amplified (Q353), the signal is fil-

tered by a BPF (L354, L355 and varactor diodes: D351, D352)

to eliminate unwanted signals before it is passed to the first

mixer.

The voltage of these diodes are controlled by tracking the

CPU (IC101) center frequency of the band pass filter. (See

Fig. 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 (Q352) to create a 49.95MHz first

intermediate frequency (1st IF) signal. The first IF signal is

then fed through one pair of monolithic crystal filter (MCF :

XF351) to further remove spurious signals.

ANT

AMP

1st

MIX

TCXO

MIC

AMP

multiply

AMP

POWER

AMP

CF 450kHz

MCF

49.95MHz

IF SYSTEM

PLL/VCO

16.8MHz

50.4MHz

ANT

MIC

Fig. 1 Frequency configuration

■IF Amplifier

The first IF signal is amplified by Q351, and then goes to

IC301 (FM processing IC). The signal is heterodyned again

with a second local oscillator signal within IC301 to create a

450kHz second IF signal. The second IF signal is then fed

through a 450kHz ceramic filter (Wide : CF301, Narrow :

CF302) to further eliminate unwanted signals before it is am-

plified and FM detected in IC301.

Item Rating

Nominal center frequency 49.95MHz

Pass bandwidth ±5.0kHz or more at 3dB

35dB stop bandwidth ±20.0kHz or less

Ripple 1.0dB or less

Insertion loss 5.0dB or less

Guaranteed attenuation 80dB or more at fo±1MHz

Spurious 40dB or more

Terminal impedance 350Ω/ 5.5pF

Table 1 Crystal filter (L71-0620-05) : XF351

Item Rating

Nominal center frequency 450kHz

6dB bandwidth ±6.0kHz or more

50dB bandwidth ±12.5kHz or less

Ripple 2.0dB or less

Insertion loss 6.0dB or less

Guaranteed attenuation 35.0dB or more within fo±100kHz

Terminal impedance 2.0kΩ

Table 2 Ceramic filter (L72-0993-05) : CF301

Item Rating

Nominal center frequency 450kHz

6dB bandwidth ±4.5kHz or more

50dB bandwidth ±10.0kHz or less

Ripple 2.0dB or less

Insertion loss 6.0dB or less

Guaranteed attenuation 60.0dB or more within fo±100kHz

Terminal impedance 2.0kΩ

Table 3 Ceramic filter (L72-0999-05) : CF302

ANT

L358~361

D353~355

BPF

Q353

RF AMP

Q351

IF AMP

IC161

D/A CONVERTER

Q352

MIX

XF351

MCF

D601~

D604

ANT

IC203

DC AMP

IC161

D/A

Q302

X3 multiply

X401

TCXO

IC301

IF system

1st local

OSC (VCO/PLL)

W/NO

(EVOL2)

CF301 (Wide)

CF302 (Narrow)

CPU

L354,355

D351,352

BPF

Fig. 2 Receiver system

AR-440

■Wide/Narrow Switching Circuit

The Wide port (pin 65) and Narrow port (pin 64) of the CPU

is used to switch between ceramic filters. When the Wide

port is high, the ceramic filter SW diodes (D303, D302) cause

CF301 to turn on to receive a Wide signal.

When the Narrow port is high, the ceramic filter SW diodes

(D303, D302) cause CF302 to turn on to receive a Narrow sig-

nal. (See Fig. 3.)

■AF Signal System

The detection signal from IF IC (IC301) goes to D/A con-

verter (IC161) to adjust the gain and is output to AF filter

(IC251) for characterizing the signal. The AF signal output

from IC251 and the DTMF signal, BEEP signal are summed

and the resulting signal goes to the D/A converter (IC161).

The AFO output level is adjusted by the D/A converter. The

signal output from the D/A converter is input to the audio

power amplifier (IC252). The AF signal from IC252 switches

between the internal speaker and speaker jack (J1) output.

(See Fig. 4.)

■Squelch Circuit

The detection output from the FM IF IC (IC301) passes

through a noise amplifier (Q301) to detect noise. A voltage is

applied to the CPU (IC101). The CPU controls squelch ac-

cording to the voltage (SQIN) level. The signal from the RSSI

pin of IC301 is used for S-meter. The electric field strength of

the receive signal can be known before the SQIN voltage is

input to the CPU, and the scan stop speed is improved.

Narrow

IC101 64pin

IF_IN MIX_O

IC301

IF System

CF302

(Narrow)

CF301

(Wide)

R320

R319

R317

R318

D303 D302

Wide

IC101 65pin

Filter

D/A

CONV.

D/A

CONV.

IC161 IC251 IC161

W/NO

(EVOL2) AF PA

IC252 SP

IF IC

IC301

Q301

NOISE AMP D301IC301 IC101

AFO

RSSI

DET

CPU

SYSTEM

SQIN

RSSI

Fig. 3 Wide/Narrow switching circuit

Fig. 4 AF signal system

Fig. 5 Squelch circuit

PLL Frequency Synthesizer

The PLL circuit generates the first local oscillator signal for

reception and the RF signal for transmission.

■PLL

The frequency step of the PLL circuit is 5 or 6.25kHz. A

16.8MHz reference oscillator signal is divided at IC401 by a

fixed counter to produce the 5 or 6.25kHz reference fre-

quency. The voltage controlled oscillator (VCO) output signal

is buffer amplified by Q410, then divided in IC401 by a dual-

module programmable counter. The divided signal is com-

pared in phase with the 5 or 6.25kHz reference signal in the

phase comparator in IC401. The output signal from the

phase comparator is filtered through a low-pass filter and

passed to the VCO to control the oscillator frequency. (See

Fig. 6)

■VCO

The operating frequency is generated by Q406 in trans-

mit mode and Q405 in receive mode. The oscillator fre-

quency is controlled by applying the VCO control voltage,

obtained from the phase comparator, to the varactor diodes

(D405 and D406 in transmit mode and D403 and D404 in

receive mode). The TX/RX pin is set high in receive mode

causing Q408 and Q407 to turn Q406 off, and turn Q405 on.

The TX/RX pin is set low in transmit mode. The outputs

from Q405 and Q406 are amplified by Q410 and sent to the

RF amplifiers. (See Fig. 6.)

D405,406

Q406

TX VCO

Q410

BUFF

AMP

D403,404

Q405

RX VCO

Q407,408

T/R SW

Charge

pump

LPF

Phase

comparator

1/M

1/N 5kHz/6.25kHz

5kHz/6.25kHz

REF

OSC

16.8MHz

PLL

DATA

IC401 : PLL IC

Q404

AMP

RF amplifiers

Q402,403

TX/RX (CPU)

Fig. 6 PLL circuit

CIRCUIT DESCRIPTION

AR-440

■Unlock Circuit

During reception, the 8RC signal goes high, the 8TC signal

goes low, and Q34 turns on. Q33 turns on and a voltage is

applied to 8R. During transmission, the 8RC signal goes low,

the 8TC signal goes high and Q36 turns on. Q35 turns on and

a voltage is applied to 8T.

The CPU monitors the PLL (IC401) LD signal directly.

When the PLL is unlocked during transmission, the PLL LD

signal goes low. The CPU detects this signal and makes the

8TC signal low. When the 8TC signal goes low, no voltage is

applied to 8T, and no signal is transmitted. (See Fig. 7.)

IC101

CPU

Q34

Q33

IC401

PLL

Q36

Q35

8RC

8R 8T

8TC

PLL lock

: LD “H”

Fig. 7 Unlock circuit

Transmitter System

■Outline

The transmitter circuit produces and amplifies the desired

frequency directly. It FM-modulates the carrier signal by

means of a varicap diode.

■Power Amplifier Circuit

The transmit output signal from the VCO passes through

the transmission/reception selection diode (D409) and ampli-

fied by Q500, Q501, Q502 and Q503. The amplified signal

goes to the final amplifier (Q504) through a low-pass filter.

The low-pass filter removes unwanted high-frequency har-

monic components, and the resulting signal is transmitted

through the antenna terminal. (See Fig. 8.)

■APC Circuit

The automatic transmission power control (APC) circuit

detects part of a final amplifier (Q504) output with a diode

(D606, D607) and applies a voltage to IC501. IC501 com-

pares the APC control voltage (PC) generated by the D/A con-

verter (IC161) and DC amplifier (IC203) with the detection

output voltage. IC501 generates the voltage to control Q502,

Q503 and Q504 and stabilizes transmission output.

The APC circuit is configured to protect over current of

Q502, Q503 and Q504 due to fluctuations of the load at the

antenna end and to stabilize transmission output at voltage

and temperature variations. (See Fig. 9.)

AMP

Q500

DRIVE

AMP2

Q503

DRIVE

AMP1

Q502

FINAL

AMP

Q504

PRE

DRIVE

AMP

Q501

AMP

IC203

ANT

D601~D605

LPF

ANT

POWER

DET

D606

D607

IC501

APC

CONTROL

D409

IC161

(PC/TVO)

VR601

(PC)

Fig. 9 APC circuit

Fig. 8 Transmitter system

CIRCUIT DESCRIPTION

Q500

RF AMPRF AMP

Q501

PRE

DRIVE AMP

Q503

ANT

DRIVE

AMP 2

Q502

DRIVE

AMP 1

Q504

FINAL

AMP

Q411

IC161 Q406

D/A

CONVERTER

D/A

CONVERTER

D/A

CONVERTER

X401

TCXO

16.8MHz

VCO

IC401

PLL

Q410

BUFFER

Q404

RF AMP

IC203

BUFFER

IC101

IC161

MIC KEY

INPUT CPU

IC161

IC203

SUM

AMP

IC202IC201

MIC

MIC/IDC SPLATTER

FILTER

AR-440

Control Circuit

The CPU carries out the following tasks (See Fig. 10.):

1) Controls the WIDE, NARROW, TX/RX outputs.

2) Adjusts the AF signal level of the AF filter (IC251) and

turns the filter select compounder on or off.

3) Controls the display unit.

4) Controls the PLL (IC401).

5) Controls the D/A converter (IC161) and adjusts the vol-

ume, modulation and transmission power.

■Memory Circuit

The transceiver has an 64k-bit EEPROM (IC66). The

EEPROM contains adjustment data. The CPU (IC101) con-

trols the EEPROM through three serial data lines. (See Fig.

11.)

IC161

D/A

converter

IC401

PLL

IC101

CPU

PLLE

EEPCK

IC101

CPU

IC66

EEPROM

EEPSDT

EEPWP

■Display Circuit

The CPU (IC101) controls the display LCD and LEDs.

When power is on, the LCD driver will use the BL line to con-

trol the LCD illumination and key backlight LEDs.

The brightness function is controlled by the switch Q12.

The LCD driver (IC3) and CPU (IC101) communicate through

the CE, CL, DI, DO lines. (See Fig. 12.)

■Key Matrix Circuit

The AR-440 front panel has function keys. Each of them

is connected to a cross point of a matrix of the KI1 to KI3 and

KS1 to KS2 ports of the LCD driver.

The LCD driver monitors the status of the KI1 to KI3 and

KS1 to KS2 ports. If the state of one of the ports changes,

the LCD driver assumes that the key at the matrix point corre-

sponding to that port has been pressed.

■Encode

The DCS and CTCSS signals are output from QT/DQT of

the CPU (IC101) and summed with the external pin DI line by

the summing amplifier (IC203) and the resulting signal goes

to the D/A converter (IC161). The DTMF signal is output from

DTMF pin of the CPU and summed with a MIC signal by the

summing amplifier (IC203), and the resulting signal goes to

the D/A converter (IC161).

The D/A converter (IC161) adjusts the MOD level and the

balance between the MOD and CTCSS/DCS levels. Part of a

CTCSS/DCS signal is summed with MOD and the resulting

signal goes to the VCOMOD pin of the VCO. This signal is

applied to a varicap diode in the VCO for direct FM modula-

tion.

IC3

LCD

driver

KI1

KI2

KI3

KS2

KS1

FUNC

REV

CALL

VFO

MHz

(Encoder)

X401

TCXO

IC161

D/A VCO

IC203

SUM

AMP

IC203

SUM

AMP

IC401

PLL

TCXO

MOD

VCO

MOD

Amp

QT/DQT

(CPU1)

DTMO

(EVOL15)

IC101

CPU

TONE

DTMF

Fig. 10 Control circuit

Fig. 11 Memory circuit

Q10

IC101

CPU

D2~D4

SW D19~D30

Q12

IC3

LCD

driver

COM0~

COM3

SEG0~

SEG30

LCD

BRI

Fig. 12 Display circuit

Fig. 13 Key matrix circuit

Fig. 14 Encoder

CIRCUIT DESCRIPTION

AR-440

■Decode

• CTCSS/DCS

The signal (W/NO (EVOL2)) goes to DTMF IN (pin 95) of

CPU (IC101). The CTCSS/DCS signal will pass through the

low-pass filters in the CPU (IC101) and be decoded within the

CPU (IC101). The DTMF signal will be decoded within the

CPU (IC101).

■D/A Converter

The D/A converter (IC161) is used to adjust MO modula-

tion, AF volume, TV voltage, FC reference voltage, and PC

POWER CONTROL voltage level.

Adjustment values are sent from the CPU as serial data.

The D/A converter has a resolution of 256 and the following

relationship is valid:

D/A output = (Vin – VDAref) / 256 x n + VDAref

Vin: Analog input

VDAref: D/A reference voltage

n: Serial data value from the microprocessor (CPU)

Power Supply Circuit

When the power switch on the display unit is pressed, the

power port on the display unit which is connected port 17

(POWER), goes low, then port 82 (SBC) goes high, Q32 turns

on, SB SW (Q31) turns on and power (SB) is supplied to the

radio.

When the DC power supplied to the radio, the voltage

regulator IC (IC33) supply into the CPU VDD and reset voltage

detect IC (IC34). IC34 will generate signal (RESET) in to the

reset terminal on the CPU (IC101) to carry out a power ON

reset. If DC power is less than about 9.5V, the radio is unable

to power on.

When the DC power voltage deceases from normal volt-

age, the INT voltage detector IC (IC35) will set to high on CPU

port 18 (INT) if B line will became less than about 9.5V. Then

CPU send to EEPROM (IC66) the backup data and go into

STOP mode.

This circuit has an overvoltage protection circuit. If a DC

voltage of 18V or higher is applied to the base of Q61, this

voltage turns Q61 on and will set to high on CPU port 18

(INT). Then CPU send to EEPROM (IC66) the backup data

and go into stop mode. (See Fig. 16.)

IC101

CPU

DTMF IN W/NO (EVOL2)

Q71

Q31

Q32

Q61

IC33

AVR

D61D62

IC34

RST

SBC

IGN

R77R76

R39R40

INT

BATT

IC101

CPU

POWER

RESET

IC35

INT

IGN

Fig. 15 Decode

Fig. 16 Power supply circuit

CIRCUIT DESCRIPTION

Data Terminal and Peripheral Circuits

CN2 (data terminal) is the data communications terminal

on the TX/RX PCB. It handles transmission control, data in-

put/output, and squelch signals.

There are two data communications modes : 9600bps

mode and 1200bps mode. Unlike with 1200bps AFSK, with

this type of high-speed modulation, frequency modulation is

carried out after the digital base band signals (rectangular

wave) are passed through a band limiting filter. For 9600bps

GMSK for example, compared to 4800Hz signals (nearly sine

wave signals passed through a filter), these signals have a

hissing sound like digital modulation when listened to by ear.

Different types of modulation, such as GMSK is distin-

guished by the type of band limiting filter.

Pin Pin Specification

No. Name

1PKD bps switching 1200bps 9600bps

Modulation input 400mVp-p 4Vp-p

Frequency shift 3±0.5kHz 2.2±0.5kHz

4PR9 Output level 500mVp-p/10kΩ

Always output during reception

5PR1 Output level 500mVp-p/10kΩ

Not output when squelch off

Table 4 Data terminal input/output level

AR-440

■Transmission Signals

Transmission modulation signals enter from PKD of the

data terminal (CN2). The path to the modulation depends on

whether communications are 1200bps or 9600bps mode.

For 1200bps mode, the transmission modulation signals

from single analog switch (IC204) pass through MIC amplifier

(IC201,202) and summing amplifier (IC203), and go to VCO

(X401) through D/A converter (IC161).

For 9600bps mode, the transmission modulation signals

from single analog switch (IC205) pass through summing

amplifier (IC303), go to TCXO (X401) and VCO through D/A

converter (IC161). (See Fig. 17.)

■Reception Signals

PR9 is the 9600bps data communications reception out-

put. It outputs the FM detection circuit output through an AF

filter (IC251). These signals are always output whether the

squelch is open or closed.

PR1 is the 1200bps data communications reception out-

put. It outputs the FM detection circuit output through an AF

filter (IC251). Output is controlled with the mute switch

(Q252) according to whether squelch is open or closed. (See

Fig. 17.)

■Squelch Signal Output Circuit

The squelch circuits is input to the TNC to prevents con-

flicts from occurring between simultaneous receive mode

and transmit mode traffic during packet communications

(only during 1200bps). The signal is output from pin 29 of

IC101 to the data terminal. The logic is as shown in the table

below.

SQC terminal output L : SQ CLOSE

CN2 H : SQ BUSY

IC204

Analog

switch

IC201,202

MIC amp

IC203

Sum amp

IC205

Analog

switch

IC251

AF filter

IC101

CPU

1200bps

9600bps VCO, TCXO,

D/A converter

Q252

Mute SW

PKS (CPU) pin 30

SQC (CPU) pin 29

PKD

PR9

PR1

PKS

SQC

CN2

Fog. 17 Data terminal and peripheral circuits

CIRCUIT DESCRIPTION

AR-440

SEMICONDUCTOR DATA

■Terminal Function

Pin No. Name I/O Function

1TONE O CTCSS/DCS/Clone output

2DTMF O DTMF/BEEP/1750Hz output

3PLLE O PLL IC chip select

4,5 NC I

6GND - GND

7CNVSS -

8EVLLD O

9BSHIFT O Beat shift

10 RESET - Reset

11 XOUT - X’tal (8MHz)

12 VSS - GND

13 XIN - X’tal (8MHz)

14 VCC - +5V

15 NMI - (Input only)

16 NC I

17 POWER I Power key input

18 INT I µcom stop

19 NC I

20 TX/RX O TX/RX

21 UL I PLL unlock detect

22,23 NC I

24 EEPSDT I/O EEPROM data

25 EEPCK O EEPROM clock

26 EEPWP O EEPROM write protect

27,28 NC I (Nch open drain)

29 SQC O Squelch signal output for TNC

(TxD for flash)

30 PKS I PTT input for TNC (RxD for flash)

31 CLKFLS I (GND)

32 BSYFLS O (Vcc)

33 TXD O To PC

34 RXD I From PC

35 PTT I PTT input

36~38 NC I

39 EMPFLS I/O (GND)

40~43 NC I

44 CEFLS I/O (Vcc)

45~49 NC I

50 AFM O AF mute

51 SPM O Speaker mute

52 AMPSW O AF AMP switch

Pin No. Name I/O Function

53 DT O Common data

54 CK O Common clock

55 NC I

56 DST1 I Destination 1

57~59 DST2~DST4 I Destination 2~4

60 VCC - +5V

61 NC I

62 VSS - GND

63 ADJ I For adjustment mode

64 NARROW O Wide/Narrow 2

65 WIDE O Wide/Narow

66,67 NC I

68 LCDCL O Clock for LCD

69 LCDCE O Chip enable for LCD

70 LCDDO O Output data to LCD

71 LCDDI I Input data from LCD

72 NC I

73 ENCB I Encoder input B

74 ENCA I Encoder input A

75 TNC9600 O TNC speed H : 9600, L : 1200

76 TNC1200 O TNC speed L : 9600, H : 1200

77 MICMT O MIC mute

78 NC I NC

79 8RC O 8R control

80 8TC O 8T control

81 NC I

82 SBC O Battery switch

83~85 NC I

86 CM I/O MIC key check

87 I For AMR DTMF keypad MIC

88 I For AMR DTMF keypad MIC

89 VOL I Volume encoder

90 TEMP2 I Temperature 2

91 TEMP1 I Temperature 1

92 RSSI I RSSI input

93 SQIN I Squelch input

94 AVSS - GND

95 DTMF IN I CTCSS/DCS/Clone/1050Hz input

96 VREF - +5V

97 AVCC - +5V

98~100

NC I

Microprocessor : 30622MAA-B85GP (TX-RX Unit IC101)

AR-440

Display Unit (X54-3450-10)

Ref. No. Parts name Description

IC3 IC LCD controller

Q6 Transistor DC switch

Q9 Transistor LCD backlit switch

Q10 Transistor Key backlit switch

Q12 Transistor Brightness function switch

D2~4 LED Key backlit

D19~30 LED LCD backlit

D31 Diode Reverse connection protection

TX-RX Unit (X57-6863-XX)

Ref. No. Parts name Description

IC31 IC Voltage regulator (8C)

IC32 IC Voltage regulator (5C)

IC33 IC Voltage regulator (5M)

IC34 IC Voltage detector (reset)

IC35 IC Voltage detector (int)

IC66 IC EEPROM

IC101 IC CPU

IC161 IC Digital potentiometer

IC201 IC MIC amplifier / IDC

IC202 IC MIC amplifier / Splatter filter

IC203 IC Buffer amplifier / SUM amplifier /

DC amplifier / 1/2 Vcc

IC204,205

IC Single analog switch

IC251 IC Audio filter

IC252 IC Audio amplifier

IC301 IC FM demodulation

IC401 IC PLL synthesizer

IC501 IC APC controller

Q31,32 Transistor

DC switch (SB) / Active when power is on

Q33,34 Transistor DC switch (8R) / Active while RX

Q35,36 Transistor DC switch (8T) / Active while TX

Q61 Transistor Over voltage detection / Active when

PS voltage is more than18V

Q86,87 Transistor Beat shift / Active while beat shift is on

Q201 Transistor AGC / MIC mute

Q251 Transistor Buffer amplifier / RX audio

Q252,253

FET AF mute / Active while AFM is H

Q254

Digital transistor

AF mute / Active while SPM is H

Q255 Transistor AF mute / Active while AMPSW is H

Q301 Transistor SQL amplifier / Noise amplifier

Q302 Transistor Buffer amplifier / 16.8MHz 3rd over tone

Ref. No. Parts name Description

Q351 Transistor IF amplifier

Q352 FET Mixer

Q353 FET RF amplifier / LNA

Q354 FET PC/TV switch

Q402,403

Transistor Charge pump

Q404 Transistor RF amplifier / PLL F in

Q405 FET RX VCO

Q406 FET TX VCO

Q407 FET T/R SW

Q408 Transistor T/R SW

Q410 Transistor Buffer amplifier / Output of VCO

Q411 Transistor RF amplifier / Output of VCO

Q440 Transistor Lipple filter

Q500 Transistor RF switch (TX/RX)

Q501 Transistor RF amplifier / Predrive amplifier

Q502 Transistor RF amplifier / Drive amplifier 1

Q503 FET RF amplifier / Drive amplifier 2

Q504 FET RF amplifier / Final amplifier

D1 Diode Surge absorption / CM

D2 Diode Surge absorption / MIC key

D3 Diode Surge absorption / RXD

D4 Diode Surge absorption / PTT

D5 Diode Surge absorption / SQC

D6 Diode Surge absorption / PKS

D31 Diode Reverse connection protection

D32 Poly switch Current protection

D61,62 Diode Over voltage detection

D201 Diode OR gate / MIC mute, AGC

D202 Diode AGC

D251 Diode Limiter

D301 Diode Detection

D302,303

Diode IF switch (Wide/Narrow)

D351~355

Varicap RF BPF tuning

D401 Diode Ripple filter

D402 Diode Voltage dropped

D403,404

Varicap RX VCO

D405,406

Varicap TX VCO

D407 Varicap Modulation

D408 Diode Lipple filter

D409 Diode RF switch (TX/RX)

D502 Diode Temperature compensation

D503 Diode Voltage protectionV

D601~605

Diode ANT switch

D606,607

Diode APC voltage detectV

D608 Diode Temperature compensation

COMPONENTS DESCRIPTION

AR-440

PARTS LIST

✽New Parts. indicates safety critical components.

Parts without Parts No. are not supplied.

Les articles non mentionnes dans le Parts No. ne sont pas fournis.

Teile ohne Parts No. werden nicht geliefert.

L: Scandinavia K:USA P:Canada

Y: PX (Far East, Hawaii) T:England E:Europe

Y:AAFES (Europe) X:Australia M:Other Areas

Ref. No.

Address

Parts No. Description Desti-

nation

New

parts

Ref. No.

Address

Parts No. Description Desti-

nation

New

parts

AR-440, DISPLAY UNIT (X54-3450-10)

TX-RX UNIT (X57-686X-XX)

11B✽A01-2193-01 CABINET

23BA10-4048-21 CHASSIS

33A✽A62-1102-03 PANEL ASSY

51D✽B62-1745-10 INSTRUCTION MANUAL

63B✽B72-2176-04 MODEL NAME PLATE C

63B✽B72-2177-04 MODEL NAME PLATE C2

83BE04-0167-05 RF COAXIAL PECEPTACLE (M)

10 3C E30-2111-15 DC CORD ACCESSORY

13 3B ✽E30-7512-05 DC CORD (RADIO)

14 3A E37-1082-05 SPEAKER WIRE

15 2A ✽E37-1097-05 FLAT CABLE

18 2B F10-2449-01 SHIELDING COVER

19 2B,3C F51-0017-05 FUSE (6✽30) (15A)

23 2B G02-0894-04 EARTH SPRING (FINAL FET)

24 2A ✽G10-1324-04 FIBROUS SHEET (DISPLAY UNIT)

25 3B G11-4127-14 RUBBER SHEET (CHASSIS)

26 2B G11-4240-04 RUBBER SHEET (DRIVE FET)

27 3B G13-1468-04 CUSHION (CHASSIS)

28 3A G53-1525-03 PACKING (PANEL)

29 2B G53-1542-03 PACKING (PHONE JACK)

30 1B G53-1544-01 PACKING (SHIELDING COVER)

31 1A G53-1548-02 GASKET

33 2C,1D H12-3112-05 PACKING FIXTURE

34 3D H13-1190-02 CARTON BOARD

36 1D H25-2341-04 PROTECTION BAG

37 2D ✽H52-2030-02 ITEM CARTON CASE

39 3C J19-1584-05 MIC HOLDER ACCESSORY

40 3D J29-0662-03 BRACKET ACCESSORY

42 3A ✽K29-9291-01 KEY TOP

43 3A ✽K29-9292-03 KNOB (VOLUME)

44 3A ✽K29-9293-03 KNOB (CNCODER)

A2BN67-2608-46 PAN HEAD SEMS SCREW W

B2AN80-2010-45 PAN HEAD TAPTITE SCREW

C2B,3B N87-2606-46 BRAZIER HEAD TAPTITE SCREW

D1B,2B N87-2614-46 BRAZIER HEAD TAPTITE SCREW

46 3D N99-0395-05 SCREW SET ACCESSORY

48 3A T07-0739-05 SPEAKER

50 2C ✽T91-0641-05 MICROPHONE ACCESSORY

101 2A ✽B11-1809-03 ILLUMINATION GUIDE (LCD)

102 2A ✽B38-0885-05 LCD

D2-4 B30-2205-05 LED (YG)

D19-30 B30-2205-05 LED (YG)

C4 CC73GCH1H101J CHIP C 100PF J

C15,16 CC73GCH1H101J CHIP C 100PF J

C19 CK73GB1H681K CHIP C 680PF K

C22 CK73GB1H102K CHIP C 1000PF K

C24 CK73GB1C104K CHIP C 0.10UF K

C25 CK73GB1H102K CHIP C 1000PF K

C27 CK73GB1H102K CHIP C 1000PF K

C30 CK73GB1C104K CHIP C 0.10UF K

C31-33 CK73GB1H102K CHIP C 1000PF K

C34,35 CK73GB1H472K CHIP C 4700PF K

C36 CK73GB0J105K CHIP C 1.0UF K

C38 CK73GB1H471K CHIP C 470PF K

C39,40 CK73GB1C104K CHIP C 0.10UF K

103 2A ✽E29-1201-04 INTER CONNECTOR (LCD)

CN1 E40-6005-05 FLAT CABLE CONNECTOR

J1 E08-0877-05 MODULAR JACK

104 2A ✽J21-8463-03 HARDWARE FIXTURE (LCD)

L1 L92-0138-05 FERRITE CHIP

CP1 R90-0724-05 MULTI-COMP 1K X4

R8 RK73GB1J102J CHIP R 1.0K J 1/16W

R10 RK73GB1J122J CHIP R 1.2K J 1/16W

R21-23 RK73GB1J103J CHIP R 10K J 1/16W

R25 RK73GB1J563J CHIP R 56K J 1/16W

R26 RK73GB1J392J CHIP R 3.9K J 1/16W

R41 RK73FB2A560J CHIP R 56 J 1/10W

R42 RK73GB1J272J CHIP R 2.7K J 1/16W

R43 RK73GB1J821J CHIP R 820 J 1/16W

R44 RK73GB1J183J CHIP R 18K J 1/16W

R45 RK73GB1J333J CHIP R 33K J 1/16W

R46 RK73GB1J101J CHIP R 100 J 1/16W

R47,48 RK73GB1J473J CHIP R 47K J 1/16W

R49,50 RK73FB2A560J CHIP R 56 J 1/10W

R51-53 R92-1252-05 CHIP R 0 OHM J 1/16W

R55 R92-1252-05 CHIP R 0 OHM J 1/16W

R54 RK73FB2A560J CHIP R 56 J 1/10W

VR1 ✽R31-0646-05 VARIABLE RESISTOR

D31 1SS355 DIODE

IC3 ✽LC75854W MOS IC

IC3 ✽PT6554LQ MOS IC

Q6 KRC102S DIGITAL TRANSISTOR

Q9 2SB1132(Q,R) TRANSISTOR

Q10 KRA225S DIGITAL TRANSISTOR

Q12 UMG3N TRANSISTOR

S1 ✽W02-3665-05 ENCODER

C10 CK73GB1H102K CHIP C 1000PF K

C13-20 CK73GB1H471K CHIP C 470PF K

C28 CK73GB1H221K CHIP C 220PF K

C29 CK73GB1H471K CHIP C 470PF K

C30 CK73GB1H102K CHIP C 1000PF K

C32 CK73GB1H102K CHIP C 1000PF K

C33 CK73GB1H471K CHIP C 470PF K

C34 ✽CE04EQ1E331M ELECTRO 330UF 25WV

C35-38 CK73GB1H471K CHIP C 470PF K

C39,40 CK73GB1C104K CHIP C 0.10UF K

AR-440

DISPLAY UNIT (X54-3450-10) TX-RX UNIT (X57-686X-XX) 3-00 : C 3-01 : C2

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