Alinco DJ-G5 User Guide

DJ-G5

Service Manual

CONTENTS

+ SPECIFICATIONS

+ CIRCUIT DESCRIPTION

1) Receiver System 3~5 SVV UniL 46

2) Transmitter System 5 UVCO Unit 46

3) PLL Synthesizer Circuit 6 VVCO Unit 47

4) CPU and Peripheral Circuit 6~7 CHARGE Unit 47

5) Terminal function of CPU 10~12 PTT Unit 47

6) Terminal function of 4094 13 Mechanical Parts 48

7) Frequency Table 13

+ SEMICONDUCTOR DATA + ADJUSTMENT

l) AK2341 14 1) Required Test Equipment 49

2) BU4094BF 15 2) Adjustment for DJ-G5T/E 50

3) HD6433877 16 3) Adjustment Points 51

4) LC75366M 17

5) LC73881 M 18

6) M64076GP 19

7) MC3372VM 20 1) RF Unit Side A 52

8) NJM21 00V 20 2) RF Unit Side B 53

9) NJM2070M 21 3) IF Unit Side A 54

10) RH5RH501A 22 4) 1F Unit Side B 55

11) RH5RH651A 22 5) CPU Unit Side A 56

12) S-80730SL-AT 23 6) CPU Unit Side B 57

13) S-AV28 24 7) UVCO Unit 58

14) S-AU57 24 8) VVCO Unit 58

15) S-81237SG-QE 25 9) PTT Unit Side A 58

16) TA75S01F 25 10) PTT Unit Side B 58

17) TA75W01FU 26 11) CHARGE Unit 58

18) TC4W53F 26 12) SW Unit Side A 58

19) TK10930VTL 27

20) uPD1 6430AGF-3B9 28

21) 24LC16B 29

22) Transistor, Diode and LED Outline Dra30 1) Diode 59~60

23) LCD Unit 31~32 2) IC 60~63

2

+ PARTS LIST

RF Unit 37~40
IF Unit 41~44
CPU Unit 44~46

+ PC BOARD VIEW

+ VOLTAGE TABLE

3) Transistor 63~64

+ EXPLODED VIEW

1) Charge Unit 33

2) RF Unit 34

3) IF Unit/CPU Unit 35

4) Front/Rear View 36

ALINCO INCORPORATED
TWIN 21 M.I.D. TOWER BUILDING 23F, 1-61, 2-CHOME,
SHIROMI CHUO-KU , OSAKA, 540-8580 JAPAN

Tel [phone] fax [phone]
e-mail: [e-mail]

+ BLOCK DIAGRAM

66~67

+ SCHEMATIC DIAGRAM

1) RF Unit 68~69

2) IF Unit 70~71

3) CPU Unit 72~73

4) UVCO Unit 74

5) VVCO Unit 75

6) CHARGE Unit 76

7) PTT Unit 76

General

M

1

000~1

u

u

VHF UHF

DJ-G5T L-band

108.000~173.995
(AM FM)

420.000~479.995
(FM)

1 30.000~l 73.995

Receiver range(MHz) R-band

(FM)

DJ-G5E 144.000~145.995 430.000~439.995

Transmitter range(

DJ-G5T 144.000~147.995 438.000~449.995
DJ-G5E 144.000~145.995 430.000~439.995

Modulation
Antenna impedance
Operating temperature range
Supply voltage (rated voltage) External (V)

Ni-Cd(V)

F2E.,F3E(FM)

50 ohm

-10 ~ +60*C

4.5~16.0(13.8)

4.5~16.0(4.8)
Tx Hi: 13.8VDC(external) approx. 1.4A approx. 1.5A
Tx Hi: 9.6VDC(Ni-Cd) approx. 1.4A approx. 1.5A
Tx Hi: 7.2VDC(Ni-Cd) approx. 1.4A approx. 1.5A
Tx Hi: 4.8VDC(Ni-Cd) approx. 1.0A approx. 1.2A

Current TxMid: 4.8VDC(Ni-Cd)
(regulated supply voltage) TxLo: 4.8VDC(Ni-Cd)

Rxsquelched(twinband)
Rxsquelched(monoband)

Rx Battery-Save On (800/200 twin band)

Ground
Microphone impedance
Dimensions without projection (with projections)
Weight (Ant. belt-clip, strap, and Ni-Cd EBP-33N inclusive)

W57(63) x H138(155) x D27.5(31.5)

approx. 0.8A

approx. 0.5A
approx. 85mA
approx. 50mA
approx. 25mA

Negative ground

2k ohm

approx. 350g

Transmitter

Hi: 13.8VDC(external) approx. 5W
Power output Hi: 9.6VDC(Ni-Cd) approx. 4.5W
(regulated supply voltage) Hi: 7.2VDC(Ni-Cd) approx. 3.5w approx. 3W

Hi: 4.8VDC(Ni-Cd) approx. l.5W approx. 1 W
Modulation
Maximum deviation
Spurious emission

Variable reactance

+/-5kHz

notmorethan-60dB

Receiver
System Double-conversion superheterodyne
First l.F. 38.9MHz 45.1 MHz
Second l.F.

Sensitivity

L-band:

44.

47.995MHz

R-band: 438.000~449.995MHz better than -16dB

455kHz

better than -15dBu

L-band: 438.000~449.995MHz
DJ-G5T

R-band: 144.000~147.995MHz

better than -12dBu
L-band: 144.000~145.995MHz
R-band: 430.000~439.995MHz better than -16dB

better than -15dBu

L-band: 430.000~439.995MHz

DJ-G5E
Squelch sensitivity
Selectivity (-6dB/-60dB)
A.F.output(@10% distortion)

R-band: 144.000~145.995MHz

more than 12kHz / less than 30kHz

better than-12dBu

better than-20dBu (0.1uV)

100mW(8ohm load)

CIRCUIT DESCRIPTTON

1) Receiver System
The receiver system is the double-conversion superheterodyne. ln L band the first
IF is 38.9MHz and second IF is 455kHz, and in R band the first IF is 45.1MHz and
second IF is 455kHz.

1 Front End
1-1 108.00MHz~ 173.995MHz (144M Band Main)

The receiving signal is passed through the low-pass filter (L90, L91 , L92, C220,
C229, C230, C231, C235), and amplified in RF amplifier (Q77), then led to the
resonant circuit (L85, L86, varicap D68, D69). The signal is amplified in RF
amplifier Q75, and passed through the resonant circuit (L81 , L82 varicap D66 and
D67), then converted into the frequency of 38.9MHz in the mixer Q79.
Two resonant circuits consisting of L85, L86, varicap D68, D69, L81 , L82, varicap
D66, D67, are controlled by the trucking voltage to obtain the best condition to the
receiving frequency.
The local signal from VVCO OUT is passed through the buffer Q79, and fed to the
base of the mixer Q76. The sum of the displayed frequency and IF frequency is
employed.

1-2 420.00MHz~51 1.995MHz: (430M Band Sub)

The receiving signal is passed through the band-pass filter (C59, C60, C61 , C66,
C67, C68, L57, L58, L53, L54), RF amplifier (Q62, Q72), band switch (D63), and
high-pass filter (C175, C176, C186, C187, L77, L78), and converted into the
frequency of 38.9MHz in mixer (Q74).
The local signal is passed through the buffer (Q70), and the difference frequency
between IF frequency and the displayed frequency is fed to the base of the mixer
(Q74).

1-3 130.00MHz~173.995MHz (144M Band Sub)

The receiving signal is passed through the low-pass filter (L90, L91 , L92, C220,
C229, C230, C231 and C235), and RF amplifier (Q68), low-pass fitter (C145,
C146, C153 and C154), then converted into the frequency of 45.1MHz in the mixer
(Q67).
The local signal is passed through the buffer (Q69), then the sum of displayed
frequency and IF frequency is fed to the base of the mixer (Q67).

1-4 420.00MHz~51 1.995MHz (433M Band Main)

The receiving signal is passed through the band-pass filter (C59, C60, C61 , C66,
C67, C68, L57, L58, L53, L54), RF amplifier (Q62, Q72) and the band-pass filter
(FL51), and amplified in RF amplifier (Q63), then converted into the frequency of

45.1MHz.
The band-pass filter (FL51) is the helical filter to obtain the band width characteris­tics.
The local signal from UVCO OUT is passed through the diode switch (D58), buffer
(Q64), then the difference frequency between the displayed and IF is fed to the
base ofthe mixer (Q61).

2 IF
2-1 L Band

The sum/difference between the receiving signal and local signal is made in each
mixer. The crystal filter (XF53) selects the difference of 38.9MHz and
eliminates unwanted signal, then it is amplified in the first IF amplifier (Q78).

2-2 R Band

The sum/difference between the receiving signal and local signal is made in each
mixer. The crystal filter (XF51) selects the difference of 45.l MHz and
eliminates unwanted signal, then it is amplified in the first IF amplifier (Q60).

3

3 Demodulation

d

3-1 L Band

After amplified in the first IF amplifier (Q78), the signal is fed to the demodulation
IC (IC302) Pin24. The first IF signal outputted to Pin24 (38.9MHz) is mixed in the
mixer of IC302 with the local signal of 38.455MHz which is oscillated in the
oscillation circuit of IC302 and the crystal oscillator (X303), then converted into the
second IF signal of 455kHz. The second IF is supplied from the IC302 Pin3. After
eliminating unwanted signal by the ceramic filter (FL302), the signal is applied to
Pin5 and Pin7.
As for the FM demodulation, the second IF signal applied to Pin7 is demodulated
in limiter amplifier and quadrature detection circuit of IC302 when IC302 Pinl4 is
open, and it is outputted from Pinl2 as the audio signal.
As for the AM demodulation, the second IF signal applied to Pin5 is demodulated
in AM amplifier and AM detection circuits of IC302 when the voltage of IC302
Pin14 is low, and it is outputted from Pinl3 as the audio signal.

3-2 R Band After amplified in the first IF amplifier (Q60), the signal is applied to the demodula-

tion lC301, Pinl6. It is mixed in the mixer of IC301 with the local signal of

45.555MHz which is oscillated in the oscillation circuit and the crystal oscillator
(X301) of IC301, then converted into the second IF signal of 455kHz. The second
IF is outputted from IC301 Pin3, and applied to Pin5 and Pin7 after eliminating
unwanted signal by the ceramic filter (FL30l).

4 Audio Circuit
4-1 FM (L bandThe audio signal supplied from IC302 is pre-emphasized white transmitting. So

the audio frequency should be compensated in the de-emphasis circuit (R366,
C363), then the signal is passed through FM/AM selection switch (IC303). The
frequency of 300Hz or below is cut in the audio high-pass fitter circuit (Q313), and
it is applied to the electronic volume (IC304) Pin1. The signal is passed through
the buffer (IC306), and adjusted the volume, then led to the audio power amplifier
(IC307) to drive the speaker.

4-2 AM (L ban

4-3 FM (R band)

5 Squelch Circuit
5-1 L Band

When AM mode is selected, the switching transistor (Q312) is turned ON, and
IC302 Pin14 becomes low, then AM demodulation circuit of IC302 is activated.

The audio signal provided from IC302 Pin14 is passed through the de-emphasis
circuit (R362, C360), and FM/AM selection switch (IC303), then led to audio high­pass filter circuit (Q313), electronic volume (IC304), buffer (IC306) and the audio
power amplifier (IC307) to drive the speaker.
Note:
The FM detection circuit in IC301 (TK10930) is operating even while AM receiving.
(The squelch circuit is activated by FM detection output.) So the FM audio is not
outputted by FM/AM selection switch (IC303).

The audio signal supplied by IC301 Pin9 is compensated the audio frequency
characteristics in de-emphasis circuit (R330, C327), and the signal is passed
through the audio high-pass filter (Q306), then applied to the electronic volume
(IC304) Pin20. It is passed through the buffer (IC305), and led to the audio power
amplifier (IC307) to drive the speaker.

A part of the audio signal of IC302 Pin12 is selected and amplified by the noise
amplifiers in R351 , R352, R350, R353, C351, C352, C353, and IC302. Then it is
supplied from IC302 Pin20 to be amplified again in the noise amplifier (Q309). The
amplified noise factor is rectified in D302, adjusted the level in VR303, and applied
to CPU (IC508) Pin96, then converted to the digital signal.

4

5-2 R Band

A part of the audio signal of IC301 Ping is selected and amplified by the noise
amplifiers in R316, R317, R318, R319, C318, C319, C320, and IC301. Then it is
supplied from IC301 Pin11 to be amplified again in the noise amplifier (Q303). The
amplified noise factor is rectified in D301 , adjusted the level in VR30l , and applied
to CPU (IC508) Pin97, then converted to the dligital signal.

6 Attenuator Circuit
6-1 VHF Band

When the ATT key is pressed, "L" is applied from shift resistor (IC52) Pin14, and
D71 is turned ON, then the Attenuator circuit (Q56, R151, C194, R160) is acti­vated.
The receiving signal passed through the low-pass filter is attenuated approximately
15dB by the attenuator to decrease the interference of the adjacent channel, etc.

6-2 UHF Band

When the ATT key is pressed, "L" is applied from shift resistor (IC52) Pin13, and
D55 is turned ON, then the Attenuator circuit (Q56, R73, C90, R80) is activated.
The receiving signal passed through the low-pass filter is attenuated approximately
15dB by the attenuator to decrease the interference of the adjacent channel, etc.

2) Transmitter System

1 Demodulation Circuit

The voice is converted into the electric signal by the internal or external micro­phone, then it is applied to the mic amplifier (IC310). This IC310 has two opera­tional amplifiers. The pre-emphasis and IDC consist of Pin1, 2 and 3, and the
splutter filter consists of Pin5, 6 and 7.
The output from the microphone amplifier is passed through variable resistors
VR305 and VR306 for maximum deviation adjustment to cathode of varicap diode
of the VCO, controlling the VCO frequency and so producing a frequency-modula­tion.

2 Power Amplifier
2-1

The transmitting signal oscillated in VVCO is amplified in pre-drive amplifier (Q81)
and drive amplifier (Q80), then fed to the power module (IC54). The transmitting
signal amplified in IC54 is supplied to the antenna after attenuated the harmonics
enough in the antenna switch (D72) and the Low-pass filter (L90, L91 , L92, C220,
C229, C230,C231 , C235).

2-2

The transmitting signal oscillated in UVCO is amplified in pre-drive amplifier (Q54)
and drive amplifier (Q53), then fed to the power module (IC51). The transmitting
signal amplified in IC51 is supplied to the antenna after attenuated the harmonies
enough in the antenna switch (D52), and the bandi)ass filter (L57, L58, L53, L54,
C59, C60, C61, C66, C67, C68).

3 APC Circuit
3-1 VHF Band A part of transmitting voltage from low-pass filter is detected by D74, and con-

verted into the DC voltage. The converted detection voltage is differential ampli­fied, and the output voltage controls the bias voltage of power module (IC54) Pin2
to fix the transmitting power.

3-2 UHF Band

A part of transmitting voltage from low-passS filter is detected by D56, and con­verted into the DC voltage. The converted detection voltage is differential ampli­fied, and the output power controls the bias voltage of power module (IC51) Pin2
to fix the transmitting power.

5

3) PLL Synthesizer Circuit

1 PLL

The data is sent to the PLL IC (IC53) Pin2 and the clock is sent to Pin3 from CPU
(IC508), then the ratio of the division is decided each in L band and R band.
Each VCO oscillating signal is amplified in the buffer (Q73: L band, Q66: R band),
and the signal in L band is applied to Pin15, then the signal in R band is applied to
Pin6. The programmable divider of IC53 is determined by frequency data, and it
divides (1/N) input signal of IC53. Resulting signal will be 5kHz or 6.25kHz.

2 Reference frequency division

The reference frequency of 5kHz or 6.25kHz according to the channel step is
produced by dividing the reference oscillation 12.8MHz (X51) by 2560 or 2048, the
data from CPU (IC508). The channel steps of 5kHz, 10kHz, 15kHz, 20kHz,
25kHz, 30kHz and 50kHz use the reference frequency of 5kHz, and the channel
step of l2.5kHz uses the reference frequency of 6.25kHz.

3 Phase comparator

The reference frequency of IC53 is 5kHz or 6.25kHz.
The VCO output frequency divided by N is compared with 5kHz or 6.25kHz in the
phase comparator.

4 PLL Loop Filter Circuit

If the phase error should occur in PLL, the charge pump of IC53 Pin13 (L band)
and Pin8 (R band) outputs the pulse. The signal is converted into the DC voltage
in PLL loop filter, then inputted to the varicap of each VCO unit.

5 VVCO Circuit (VHF Band)

Q705 is turned ON, and the desired frequency is oscillated in the Colpitts osclllator
consisting of Q701. The frequency control voltage is apprled to the varicap (D702,
D703), and the osciflating frequency is changed, then amplified in VCO buffer
(Q703), and outputted from the VCO unit.

6 VVCO Circuit (UHF Band)

Q704 is turned ON, and the desired frequency is oscillated in the Colpitts oscillator
consisting of Q702. The frequency control voltage is applied to the varicap (D704,
D705), and the oscillating frequency is changed, then amplified in VCO buffer
(Q703), and outputted from the VCO unit.

7 UVCO Circuit (UHF Band)

Q605 is turned ON, and the desired frequency is oscillated in the Colpitts oscillator
consisting of Q601. The frequency control voltage is applied to the varicap (D602,
D603), and the oscillating frequency is changed, then amplified in VCO buffer
(Q603), and outputted from the VCO unit.

8 UVCO Circuit (VHF Band)

Q604 is turned ON, and the desired frequency is oscillated in the Colpitts oscillator
consisting of Q602. The frequency control voltage is applied to the varicap (D604,
D605), and the oscillating frequency is changed, then amplified in VCO buffer
(Q603), and outputted from the VCO unit.

4) CPU and Peripheral Circuit

1 LCD Display Circuit

The strobe, serial data, and clock are sent to the LCD driver (IC503) Pin 75~77
from CPU (IC508), and the LCD is activated with 1/4 duty and l/3 bias. The frame
frequency is 137Hz.

6

2 Display Lamp Circuit

The regulated power supply circuit consisting of Q505, Q507, R508, R509 supplies
H from CPU (IC508) when LAMP key is pressed. Then it is applied to the base
of Q507, and the voltage of 3.5V is outputted from the collector of Q505. lt is fed
to each LED (D503~D506, D509,D511 ,D513,D514).
3 Reset and Backup Circuit
When the voltage of approximately 3.0V or more is supplied from the external (DC
jack, battery), the reset signal of "H" level is outputted from Reset IC (IC506), and
it is fed to CPU (IC508) Ping, then the CPU is reset. Until the clock (X502) of CPU
is stabilized, the reset signal is fed to CPU after it is delayed in C522 and R58l.
When the voltage from external is decreased to approximately 3.3V or below, the
voltage of Pin18 in CPU is changed from "H" level to "L" level, then the CPU enters
into the backup mode.

4 S (signal) Meter Circuit
4-1 L Band

The DC voltage of IC302 Pin16 is low when the signal is weak and high when the
signal is strong. This change of DC voltage is adjusted the level at the trim pot
(VR304), and led to CPU (IC508) Pin98, then displayed on the LCD as S meter
after A/D converting.

4-2 R Band

The DC voltage of IC301 Pin13 is adjusted the level at the trim pot (VR302), and
led to CPU (IC508) Pin99, then displayed on the LCD as S meter after A/D
converting.

5 Full-duplex Circuit

When the DUP key is pressed, in the receiving side Q317 is turned ON and the
audio signal supplied to audio amplifier is decreased. ln transmitting side Q510 is
turned ON, and the modulation signaf is decreased to prevent the howling.

6 X-Band Repeater Circuit

ln X-band repeater mode, Q323 is turned OFF, the audio Signal which is opened
the squelch is passed through the audio high-pass filter (Q313: L band, Q306:R
band), and the signal is applied to the other modulation circuit. Then the radio
enters into the transmitting mode.

7 DTMF
7-1 Encoder

The DTMF encoder is built in the CPU (IC508). The DTMF signal output from
Pin91 is adjusted its level at VR308, and amplified by the mic amplifier (IC310),
then fed to the varicap for modulation of each VCO.
Simultaneously the monitor sound is passed through AF circuit, and it is supplied
from the speaker.

7-2 Decoder

A part of the audio signal which is demodulated in IC301 , IC302 is fed to the DTMF
switch (IC501), then only the selected band audio signal is fed to DTMF IC (IC502)
Pin1. The supplied signal is judged whether valid or not by the signal judgement
circuit in IC502, and converted into 4-bit code, then supplied to IC508 Pin85.

8 Tone Squelch
8-1 Encoder

8-2 Decoder

The tone signal supplied from Tone IC (IC504) Pin21 (67.OHz~254.lHz) is ad­justed the level at VR307, and amplified n the tone amplifier (Q322), then applied
to the varicap for modulation of each VCO.

A part of the audio signal which is demodulated in IC301, IC302 is fed to the tone
switch (IC504), then only the selected band audio signal is fed to tone IC (IC504)
Pin1.
When the signal is accord with the programmed tone frequency, "LO" is outputted
from IC504 Pin14, and it is fed to CPU (IC508) Pin74, then the squelch is opened.

7

5) Terminal function of CPU
No. Name Pin Name I/O

1 ANO +BD I
2 AVSS GND /
3 TEST GND /
4 X2 OPEN
5 X1 VDD /
6 VSS GND /
7 OSC1 OSC1 I
8 OSC2 OSC2 O

9 RES REST I
10 NMl VDD /
11 P20 CLK O
12 P21 DATA O
13 P22 STB1 O
14 P23 STB2 O
15 P24 STB3 O
16 P25 OPEN /
17 P26 +BDSW O
18 lRQO BU I
19 P17 RE1 I
20 P16 RE2 I
21 P15 PSW I
22 P14 OPEN
23 P13 OPEN
24 TMOFH BEEP O
25 TMOFL 1750 O
26 P10 XBR O
27 VSS GND /
28 V3 OPEN
29 V2 OPEN
30 V1 OPEN
31 VCC VDD /
32 PA3 LBSY I
33 PA2 LCLK O
34 PA1 LDATA O
35 PA0 LSTB O
36 P50 PT5/PTT I
37 P51 MONt I
38 P52 TBST I
39 P53 FUNC I
40 P54 BP3 I
41 P55 UHF I
42 P56 VOLU I
43 P57 SQLD I
44 P60 SQLU I
45 P6l SRCH I
46 P62 VHF I
47 P63 VOLD I
48 P64 KIN1 I
49 P65 KIN2 I
50 P66 KIN3 I

Description
Power supply voltage detection

Analogground
Connect to ground
Open when not used
Power supply
Ground
Internal oscillator input
Internal osciIIator output
CPU reset

Clock input
Data input
RF4094 strobe
lF4094 strobe
Electronic volume strobe

+BD input ON/OFF
Backup signal input
Rotary encoder up input
Rotary encoder down input
Power switch input

Beep sound output
Tone burst output
Cross band repeater ON/OFF
Ground

Power supply terminal
LCD driver data input ON/OFF
LCD driver clock
LCD driver serial data
LCD driver strobe
PTT input
Monitor key input
TX(toneburst)input
Function key input
Band plan (TX/RX expansion)
UHF key input
VOL up key input
SQL down key input
SQL up key input
Search key input
VHF key input
VOL down key input
Key matrix input1
Key matrix input2
Key matrix input3

H L HiZ
Analog lN

At work

Pulse Normal
Pulse Normal
Pulse Normal
Pulse Normal
Pulse Normal

ON OFF
Normal Backup
OFF ON
OFF ON
OFF ON

Pulse Pulse Normal
Pulse Pulse Normal
Normal Repeater

Permitted Inhibited
Normal Pulse
Normal Pulse
Inhibited Permitted
ON OFF
OFF ON
OFF ON
OFF ON
Expanded Normal
OFF ON
OFF ON
OFF ON
OFF ON
OFF ON
OFF ON
OFF ON
OFF ON
OFF ON
OFF ON

10

No. Name Pin Name IIo

F

51 P67 KIN4 I
52 P70 KOT1 O
53 P71 KOT2 O
54 P72 KOT3 O
55 P73 KOT4 O
56 P74 PRST O
57 P75 SDA I/O
58 P76 SCL O
59 P77 50SW O
60 P80 OPEN /
61 P81 TFD O
62 P82 UTBST O
63 P83 VTBST O
64 P84 VTXCV O
65 P85 UTXCV O
66 P86 VBSY O
67 P87 UBSY O
68 P90 LAMPC O
69 P91 PCNT O
70 P92 MUTE O
71 P93 RFD O
72 P94 DSW O
73 P95 TSW O
74 P96 TSQD I
75 P97 TSTB O
76 VCC VDD /
77 PD0 AM O
78 PD1 AFPC O
79 PD2 VAFS O
80 PD3 UAFS O
81 PD4 OPEN
82 PD5 IFPC O
83 PD6 VRXC O
84 PD7 URXC O
85 PE0 DSD I
86 PE1 ACK O
87 PE2 DSTD I
88 PE3 DPD O
89 AVCC AVCC /
90 TONEM TRAC O
91 TONED DTON O
92 VTref VDD /
93 AVref AVCC /
94 AN7 BP2 I
95 AN6 BP1 I
96 AN5 VSD I
97 AN4 USD I
98 AN3 VSMT I
99 AN2 USMT I

100 AN1 MRC I

Description
Key matrix input4
Key matrix output1
Key matrix output2
Key matrix output3
Key matrix output4
PLL reset pulse input judgement
EEPROM data
EEPROM clock
5V ON/OFF

Full duplex ON/OFF when transmittin
Right side TX lamp ON/OFF
Left side TX lamp ON/OFF
VHF TX circuit for power supply
UHF TX circuit for power supply
VHF RX busy lamp ON/OFF
UHF RX busy lamp ON/OFF
LAMP ON/OFF
Vcc ON/OFF
Microphone mute
Full duplex ON/OFF when receiving
DTMF band selection
Tone band selection
Tone detection signal input
Tone IC strobe
Power supply
AM circuit ON/OFF
Audio amplifier power supply ON/OF
VHF AF mute
UHF AF mute

IF power supply ON/OFF
VHF IF circuit power supply
UHF IF circuit power supply
DTMF 4-bit data
DTMF clock
DTMF detection signal
DTMF operation ON/OFF
A/D converter power supply
VHF trucking voltage output
DTMF signal output
Power supply for DTMF reference level
Power suppTy for A/D reference level
Band plan2
Band plan1 (destination)
VHF SD signal input
UHF SD signal input
VHF S meter signal input
UHF S meter signal input
Microphone remote control input

H L HiZ
OFF ON
OFF ON
OFF ON
OFF ON
OFF ON
Normal Pulse
PL SE Normal
PL SE Normal
ON OFF

Full duplex Normal
ON OFF
ON OFF

ON OFF
ON OFF
ON OFF

ON OFF
ON OFF
ON OFF
Muted Normal
Full duplex Normal
VHF UHF
VHF UHF
None Tone
Pulse Normal

AM FM
ON OFF
Muted ON
Muted ON

ON OFF
OFF ON
OFF ON
Normal Pulse
Pulse Normal
Signal None
isstopped Operation

Normal

No signal Analog in
No slgnal Analog in
Analog in
Analog in
Analog in

11

6) Terminal function of 4094

o

VHF

VHF

UHF

UHF

BS

145

4094 p
Q11 UHl UHF high power control Active Low Low power H H H H H

Q12 UMlD UHF middle power control Active Low UHF middle=H H H H H H
Q13 VHl VHF high power control Active Low Low power H H H H H
Q14 VMID VHF middle power control Active Low VHF middle=H H H H H H
Q15 VATTC VHF RX attenuater control Active Low ATT ON H/L H/L H/L H/L H
Q16 UATTC UHF RX attenuater control Active Low ATT ON H/L H/L H/L H/L H
Q17 VCO4SW UHF VCO switch Active Low H/L H/L L H H
Q18 VCO1SW VHF VCO switch Active Low L H H/L H/L H

Q21
Q22 USUBC UHF 145MHz power control Active Low H/L H/L H L H
Q23 UMAINC UHF 435MHz power control Active Low H/L H/L L H H
Q24
Q25 VSUBC VHF 435MHz power control Active Low H L H/L H/L H
Q26 VMAlNC VHF 145MHz power control Active Low L H H/L H/L H
Q27 UPLLC UHF VCO power control Active Low H/L H/L L L H
Q28 VPLLC VHF VCO power control Active Low L L H/L H/L H

7) Frequency Table
Band IF Frequency Display frequency UP/LOW Oscillation frequency Mode
VHF 38.9MHz 108.000~173.995MHz UP 146.900~212.895MHz FM/AM

UHF 45.lMHz 130.000~173.995MHz UP 175.100~219.095MHz FM

Port Name Function Logic Description

420.000~511.995MHz Low 381.100~473.095MHz FM/AM

420.000~511.995MHz Low 374.900~466.895MHz FM

MHz

433
MHz

433
MHz

145
MHz

OFF
TIME

13

(XA0505)