Vertex VXR-9000EU User manual

©2004 VERTEX STANDARD CO., LTD. EC044U95A
Rack Mount Repeater
VXR-9000EU
Service Manual
Specifications ...........................................................A-1
DSUB 15-pin Accessory Connector ...................... B-1
Exploded View & Miscellaneous Parts ............... C-1
Block Diagram ......................................................... D-1
Connection Diagram ............................................... E-1
Circuit Description ...................................................F-1
Alignment ................................................................ G-1
Introduction
This manual provides the technical information necessary for servicing the VXR-9000EU Rack Mount Repeater.
Servicing this equipment requires expertise in handing surface-mount chip components. Attempts by non-qualified
persons to service this equipment may result in permanent damage not covered by the warranty, and may be illegal in
some countries.
Two PCB layout diagrams are provided for each double-sided board in this transceiver. Each side of the board is
referred to by the type of the majority of components installed on that side (“Side A” or “Side B”). In most cases one
side has only chip components (surface-mount devices), and the other has either a mixture of both chip and leaded
components (trimmers, coils, electrolytic capacitors, ICs, etc.), or leaded components only.
As described in the pages to follow, the advanced microprocessor design of the VXR-9000EU allows a complete
alignment of this transceiver to be performed without opening the case of the radio; all adjustments can be performed
from the personal computer, using with the Vertex Standard VPL-1 Programming Cable and CE60 Software.
While we believe the information in this manual to be correct, Vertex Standard assumes no liability for damage that
may occur as a result of typographical or other errors that may be present. Your cooperation in pointing out any
inconsistencies in the technical information would be appreciated.
Contents
Board Units (Schematics, Layouts & Parts)
MAIN Unit .......................................................... H-1
CNTL Unit ............................................................ I-1
PANEL Unit .......................................................... J-1
25W PA Unit ........................................................ K-1
REG Unit .............................................................. L-1
VERTEX STANDARD CO., LTD.
4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan
VERTEX STANDARD
US Headquarters
10900 Walker Street, Cypress, CA 90630, U.S.A.
YAESU EUROPE B.V.
P.O. Box 75525, 1118 ZN Schiphol, The Netherlands
YAESU UK LTD.
Unit 12, Sun Valley Business Park, Winnall Close
Winchester, Hampshire, SO23 0LB, U.K.
VERTEX STANDARD HK LTD.
Unit 5, 20/F., Seaview Centre, 139-141 Hoi Bun Road,
Kwun Tong, Kowloon, Hong Kong

Specifications
A-1
General
Frequency Range: Type A : 400 - 430 MHz, Type CS : 440 - 470 MHz
Number of channel:32
Channel Spacing: 5 kHz/6.25 kHz
Operating Voltage: 13.6 V DC ±10 %
Current Drain: 8 A Maximum
Duty Cycle: Receive : 100 %
Transmit : 100 % (@20 W output)
Frequency Stability: 1.5 ppm
1.0 ppm (30min after wake up)
Operating Temperature Range: –30 °C to +60 °C
Dimensions (W x H x D): 483 x 88 x 343 mm
Weight (Approx.): 9.7 kg
Receiver
Antenna Impedance: 50 ohm
Antenna Connector: Type-BNC
Receiver Type: Double-Conversion Superheterodyne
Sensitivity: 0.35 µV (12dB SINAD), 0.45 µV (20dB Noise Quieting)
Selectivity: 80 dB (Wide), 66 dB (Narrow)
Intermodulation: 72 dB (Wide), 63 dB (Narrow)
Image Rejection: 90 dB
Squelch Threshold: 0.4 µV (Adjustable)
Audio Output: 4 W @4 ohm
Audio Distortion:<3%
Hum and Noise: >50 dB (Wide), >45 dB (Narrow)
Audio Frequency Response: De-emphasis : 6 dB/oct (From 300 Hz to 3 kHz)
Conducted Spurious: <–80 dBm
Transmitter
RF Output Power: 25/10/5 W (High/Mid/Low)
Antenna Impedance: 50 ohm
Antenna Connector: Type-N
Modulation Type: 16K0F3E/11K0F3E
System Deviation: ±5.0 kHz (Wide), ±2.5 kHz (Narrow)
Hum and Noise: >50 dB (Wide), >45 dB (Narrow)
Microphone Sensitivity:5mV
Audio Frequency Response: Pre-emphasis : 6dB/oct (From 300 Hz to 3 kHz)
Spurious Emission: –36 dBm @<1 GHz, –30 dBm @>1 GHz
Audio Distortion: 3.0 % @1 kHz
Microphone Impedance: 600 ohm
Specifications subject to change without notice or obligation.

DSUB 25-pin Accessory Connector
The VXR-9000EV repeater is provided with a 25-pin DB-
25F female connector for interconnections to
accessories.Use a DB-25M 25-pin male connector to con-
nect accessories to the repeater. The pins on the accessory
connector are explained in detail as follows:
Pin 1: GND
Chassis ground for all logic levels and power supply re-
turn.
Pin 2: +13.6 V
[POWER SUPPLY]
This pin provides 13.6 Volts, 2.0 A, DC from the repeater
supply. There is a internal 3 A fuse to prevent damage to
the repeater.
Pin 3: TX AF IN
[ANALOG TRANSMITTER INPUT](VOICE BAND: 300 ~ 3,000 HZ)
This pin is s audio input. Input impedance is 600 Ohms.
This audio is injected before the splatter filter stage, so
excess signal input levels are clipped.
Use shielded cable to connect to this pin, and connect the
shield to GND.
Pin 4: TONE IN
[TRANSMITTER INPUT](SUB-AUDIBLE BAND: 5 ~ 250 HZ)
This pin is sub-audible tone produces 10% of full system
deviation. The nominal input voltage is 77.5 mVrms. The
input impedance is@600 Ohms, and has a flat response
characteristic (repeater deviation is constant for a given
signal level over the frequency range of 5 ~ 250 Hz). In-
jecting too high a voltage here causes over-deviation of
CTCSS or DCS, degrading performance. Use shielded
cable to connect to this pin, connecting the shield to GND.
B-1
DB-25 PIN NUMBERING
Pin 5: TX ATT
This output is intended for controlling an external coaxial
switching relay. It is an open drain output which can sink
approx. 1.5 A when active. The delay time which is be-
tween the repeater cause to transmit mode and this port
switches to ground can be programmed by your VERTEX
STANDARD dealer.
Pin 6: DISC OUT
[ANALOG OUTPUT](WIDE-BAND: 0 ~ 3,000 HZ)
Received signals with full system deviation produce 350
mVrms audio at this pin. The output impedance is 600
Ohm, and is extracted before the de-emphasis and squelch
circuitry. Use shielded cable to connect to this pin, and
connect the shield to GND.
Pin 7: N.C.
No connection.
Pin 8: RSSI
[ANALOG OUTPUT]
A DC voltage proportional to the strength of the signal
currently being received (Receiver Signal Strength Indi-
cator) is provided on this pin. This low impedance output
is generated by the receiver IF sub-system and buffered
by an internal op-amp. Typical voltages are graphed as
follows:
Pin 9: COAX. SW
[LOGIC OUTPUT (ACTIVE LOW)]
This output is intended for controlling an external coaxial
switching relay. It is an open drain output which can sink
approx. 1.5 A when active. This signal only switches if the
repeater has been programmed for “SIMPLEX” mode. If
programmed for “DUPLEX,” the signal remains open
(high impedance) at all time.
0
–60 –100 –110 –120 (dBm)–70 –80 –90
0.5
1.0
1.5
2.0
2.5
(DC V)
Input Signal Level
RSSIOutputVoltage

DSUB 25-pin Accessory Connector
B-2
Pin 10,13,15,16,17,18,19,21:
PROGRAMMABLE I/O “0” ~ ”7”
The VXR-9000 provides eight ports (PIO)
that can be programmed for various input
or output signals, or for control functions.
Each port may be programmed as to its
function, its status (input or output), and
its logic (for output ports only). Each port
activates while the repeater is operating
in the “Remote”mode. See Tables on the
next page for detail regarding the input and output sig-
nals.
Pin 11: NSQ DET
This is an open-collector, active-low output capable of
sinking about 10 mA. It indicates that the receiver squelch
is open. If the squelch control is properly set, this indi-
cates a carrier on the receiver channel.
Pin 12: EXT PTT
This input is internally pulled up to 5 VDC. When pulled
low by an external device, it keys the repeater transmitter
while the repeater is operating in the “Remote”mode.
Avoid voltage in excess of 5 V on this pin, or internal dam-
age to the microprocessor on the repeater CNTL Unit may
result.
Pin 14,20: GND
Chassis ground for all logic levels and power supply re-
turn.
Pin 22: RXD LOW
[ANALOG OUTPUT FOR DATA COMMUNICATIONS]
(300 ~ 3,000 Hz)
This pin is an output for low speed receiving data signals
(typically 1200 bps), with the data being extracted after
the de-emphasis and low pass filter stages.
Pin 23: RXD HIGH
[DIGITAL OUTPUT FOR DATA COMMUNICATIONS]
(Max.: 5 kHz)
This pin is an output for high speed receiving data signals
(typically 9600 bps), with the data being extracted imme-
diately after the discriminator (prior to any de-emphasis).
Pin 24: TXD LOW
[ANALOG INPUT FOR DATA COMMUNICATIONS]
(300 ~ 3,000 Hz)
This pin is intended to be used as a low speed data signal
input to the repeater (typically 1200 bps). This digital data
signal is injected before the transmitter pre-emphasis and
limiting stages, so excess signal input levels are clipped.
Pin 25: TXD HIGH
[DIGITAL INPUT FOR THE DATA COMMUNICATIONS]
(0 ~ 5 kHz)
This pin is intended to be used as a high speed digital
data signal input to the repeater (typically 9600 bps). This
digital data signal is injected after the transmitter splatter
filter stage.
Pin I/O Port
10 6
13 7
15 4
16 3
17 2
18 1
19 0
21 5

B-3
Item
Bin_CH_0
Bin_CH_1
Bin_CH_2
Bin_CH_3
Bin_CH_4
Channel_Down
Channel_Up
Compander_On
Compander_Off
Compander_Toggle
CTCSS/DCS
_Enc _On
CTCSS/DCS
_Enc _Off
CTCSS/DCS
_Enc _Toggle
CTCSS/DCS
_Dec_On
CTCSS/DCS
_Dec_Off
CTCSS/DCS
_Dec_Toggle
Two _Tone _Dec _On
Two _Tone _Dec _Off
Two _Tone_Dec _Toggle
CW_ID_On
CW_ID_Off
CW_ID_Toggle
CW_ID_Single
CW_Message_1
CW_Message_2
CW_Message_3
CW_Message_4
CW_Message_5
CW_Message_6
CW_Message_7
CW_Message_8
CW_Message_Bin _0
CW_Message_Bin _1
CW_Message_Bin _2
CW_Message_Bin_Trig
DC_Power _Save _On
DC_Power _Save _Off
DC_Power_Save_Toggle
Encryption_On
Encryption_Off
Encryption_Toggle
Encryption_Code
Local_PTT _On
Local_PTT _Off
Local_PTT _Toggle
Function
Recall the Memory Channel (Binary LSB)
Recall the Memory Channel (Binary)
Recall the Memory Channel (Binary)
Recall the Memory Channel (Binary)
Recall the Memory Channel (Binary MSB)
Step to the next-lower Operating Channel
Step to the next-higher Operating Channel
Turn the Compander Circuit "On"
Turn the Compander Circuit "Off"
Turn the Compander Circuit "On" or "Off" (Toggle)
Turn the CTCSS/DCS Encoder "On"
Turn the CTCSS/DCS Encoder "Off"
Turn the CTCSS/DCS Encoder "On" or "Off" (Toggle)
Turn the CTCSS/DCS Decoder "On"
Turn the CTCSS/DCS Decoder "Off"
Turn the CTCSS/DCS Decoder "On" or "Off" (Toggle)
Turn the 2-Tone Decoder "On"
Turn the 2-Tone Decoder "Off"
Turn the 2-Tone Decoder "On" or "Off" (Toggle)
Turn the CW IDer "On"
Turn the CW IDer "Off"
Turn the CW IDer "On" or "Off" (Toggle)
Transmit the CW ID
Send the CW Message 1
Send the CW Message 2
Send the CW Message 3
Send the CW Message 4
Send the CW Message 5
Send the CW Message 6
Send the CW Message 7
Send the CW Message 8
CW Message Recall (Binary LSB)
CW Message Recall (Binary)
CW Message Recall (Binary MSB)
Send the CW Message which is recalled from I/O port
Turn the DC Power Save Feature "On"
Turn the DC Power Save Feature "Off"
Turn the DC Power Save Featuer "On" or "Off" (Toggle)
Turn the Encryption Circuit "On"
Turn the Encryption Circuit "Off"
Turn the Encryption Circuit "On" or "Off" (Toggle)
Select the Encryption Code
Enable the Local PTT Switch
Disable the Local PTT Switch
Enable/Disable the Local PTT Switch (Toggle)
PROGRAMMABLE I/O PORT INPUT ITEMS
Item
Monitor_On
Monitor_Off
Monitor_Toggle
Monitor_M
Multi_Tone_Main
Multi_Tone_Sub
Multi_Tone_Toggle
Panel_Indicator _On
Panel_Indicator _Off
Panel_Indicator _Toggle
Repeat_On
Repeat_Off
Repeat_Toggle
Reset
Scan_On
Scan_Off
Scan_Toggle
Squelch_On
Squelch_Off
Squelch_Toggle
Test_Tone_On
Test_Tone_Off
Test_Tone_Toggle
Test_Tone_M
TOT_On
TOT_Off
TOT_Toggle
Transmit_On
Transmit_Off
Transmit_Toggle
TX_Power_Mid_On
TX_Power_Mid_Off
TX_Power_Mid_Toggle
TX_Power_Low_On
TX_Power_Low_Off
TX_Power_Low_Toggle
Function
Turn the Monitor Function "On"
Turn the Monitor Function "Off"
Turn the Monitor Function "On" or "Off" (Toggle)
Turn the Monitor Function "On" when the I/O port is
"High"
Select the Tone Table to "Main"
Select the Tone Table to "Sub"
Switch the Tone Table between "Main" and "Sub"
(Toggle)
Turn the Front Panel's Illumination "On"
Turn the Front Panel's Illumination Off
Turn the Front Panel's Illumination "On" or "Off" (Toggle)
Set theOperating Mode to "Repeat" mode
Set theOperating Mode to "Base" mode
Toggle theOperating Mode between the "Repeat"
mode and "Base" mode
Reset the Repeater
Start Scanning
Stop Scanning
Toggle the Scanner between "Start" and "Stop"
Turn the Squelch Circuit "On (Close)"
Turn the Squelch Circuit "Off (Close)"
Turn the Squelch Circuit "On" or "Off" (Toggle)
Generate the Test Tone Signal
Stop the generation of the Test Tone
Toggle the Test Tone genetation "On" and "Off"
Generate the Test Tone Signal when the I/O port is
"High"
Turn the Time-Out Timer featuer "On"
Turn the Time-Out Timer featuer "Off"
Turn the Time-Out Timer featuer "On" or "Off"
Enable the transmission of the Repeater
Disable the transmission of the Repeater
Enable/Disable the transmission of the Repeater
Set the transmitter power to the "Mid" level
Return the transmitter power to "Original" power level
Toggle the transmitter power between the "Mid" level
and "Original" power level
Set the transmitter power to the "Low" level
Return the transmitter power to "Original" power level
Toggle the transmitter power between the "Low" level
and "Original" power level
PROGRAMMABLE I/O PORT OUTPUT ITEMS
DSUB 25-pin Accessory Connector
Item
Remote_Enb
Busy
CTCSS_Correspond
DCS_Correspond
CTCSS/DCS_Correspond
RX_Unlock
TX_Unlock
PLL _Unlock
Function
Output the signal when the Operating mode is set to
"Repeat" mode.
Output the signal when the squelch is opened.
Output the signal when the receiving CTCSS tone is
matched.
Output the signal when the receiving DCS code is
matched.
Output the signal when the receiving CTCSS tone or
DCS code is matched.
Output the signal when the RX PLL Circuit is Unlocked.
Output the signal when the TX PLL Circuit is Unlocked.
Output the signal when the TX or RX PLL Circuit is
Unlocked.
Item
Power_Supply_Backup
Power_Supply_Voltage
Transmit
Fan_Alarm
Fan_Status
High_Temperature
TX_PD_Det
Anser_Back
Function
Output the signal when the backup power source is
used.
Output the signal when the main power source is used.
Output the signal when the repeater is transmitting.
Output the signal when the Coolig Fan is disabled.
Output the signal when the Coolig Fan is activated.
Output the signal when the PA Unit is High Tempera-
ture.
Output the signal when the TX power is abnormalily.
Output the signal when the repeater status is changed
from the Remote Control command.

B-4
DSUB 25-pin Accessory Connector
Note

Exploded View & Miscellaneous Parts
C-1
H
F
O
P
AJ
K
NM
G
C
B
A
D
CF
E
GH
I
D
E
J
I
L
L
M
N
P
O
K
RA0506800
RUBBER KNOB
REF.










QTY.
4
8
2
2
14
4
8
3
11
2
12
12
8
1
1
2
DESCRIPTION
PAN HEAD SCREW M5X8
FLAT HEAD SCREW M4X8B
HEXA SOCKET BOLT M4X16B
BINDING HEAD SCREW M2.6X8NI
BINDING HEAD SCREW M4X6NI
BINDING HEAD SCREW M4X10NI
SEMS SCREW HSM4X8
TAPTITE SCREW M2.6X6
TAPTITE SCREW M3X8
SEMS SCREW HSM3X6NI
BINDING HEAD SCREW M3X5NI
TAPTITE SCREW M3X8
TAPTITE SCREW M3X10
HEX HEAD BOLT M4X8NI
TOOTHED LOCK WASHER OW4NI
BINDING HEAD SCREW M3X8NI
VXSTD P/N
U00508001
U30408007
U51416007
U20208002
U20406002
U20410002
U04408001
U24206001
U23308001
U04306002
U20305002
U24308001
U24310001
U52408002
U72004002
U20308002
11
12
13
14
16
15
RA0505300
TOP CASE











11
11
11
11
11
11 11


12
12
12
12
12
12 12
12
12 12



























11
11



14
15







16
16




RA03328A0
CASE
RA0637900
HEATSINK PLATE
P1090547
CONNECTOR
S5000236
WASHER
RA0506500 (2 pcs)
MOTOR HOLDER
S5000242
FINGER GUARD
M2090037
FAN
Q6000170
TERMINAL STRIP
P1091181
CONNECTOR
S5000182
SCREW
P1091072
CONNECTOR
RA0506600
COVER
P1090654
CONNECTOR
RA0505400
BASE
RA0532800
LABELREAR
RA0505500
PANEL
S5000241
HANDLE
T9206754
WIRE ASSY
R0145680 (3 pcs)
HOLDER
T9207034A
WIRE ASSY
RA0510000
FRONT PANEL ASSY
N2090061
ROCKER SWITCH
RA02543A0
KNOB
M4090150
SPEAKER
RA0507000
PLATE
T9207032
WIRE ASSY
T9318204
WIRE ASSY
RA0506000
PANEL
CB2116001
CNTL UNIT
CB2328001
PANEL UNIT
S5000241
HANDLE
T9318202
WIRE ASSY
T9207037A
WIRE ASSY
T9207049
WIRE ASSY
R0134490
HOLDER
CB2115002 (VER CS)
MAIN UNIT
RA050140A
CHASSIS
RA0505900
BRACKET
S0000074
RUBBER GROMMET
T9207053
WIRE ASSY
T9207055
WIRE ASSY
T9207047
WIRE ASSY
T9207046
WIRE ASSY
T9207039
WIRE ASSY
S5000223 (3 pcs)
SPACER
T9207048
WIRE ASSY
Non-designated parts are available only as
part of a designated assembly.
CB2759001
25 W PA UNIT
RA0506900 (6 pcs)
KNOB CAP (ACCESSORIES)
DESCRIPTION
BLADE FUSE
DC CABLE
NAME PLATE
KNOB CAP
VXSTD P/N
Q0000112
T9023499
RA0508500
RA0506900
ACCESSORIES
RA0638000
SHIELD CASE
G1093917
IC
13
12
13
13
Q6000114
TERMINAL B4 AG M3 (2 pcs)
13
13

RA0638100
SHIELD SHEET
RA0532400
GASKET L=20
CB2565001
REG UNIT

Exploded View & Miscellaneous Parts
C-2
Note

D-1
Block Diagam
MAIN Unit

D-2
Block Diagam
CNTL Unit, PANEL Unit, & 25W PA Unit

E-1
Connection Diagam

E-2
Connection Diagam
Note

RECEIVE SIGNAL PATH
Incoming RF from the RX antenna jack is delivered to the
MAIN Unit and passes through the protection diode
D1001 (1SS302) and D1002 (RN739F) and a varactor-
tuned band pass filter consisting of coils L1003 and L1004,
capacitors C1012, C1014, C1015, C1017, C1018, C1021,
C1032, C1040, C1044, and C1045, and diodes D1003 and
D1004 (both HVU350). Signals are then applied to the RF
amplifier, Q1009 (2SC3357). The amplified RF signal is
applied through a varactor-tuned band pass filter consist-
ing of coils L1010 and L1011, capacitors C1071, C1074,
C1075, C1079, C1082, C1086, C1092, C1094, C1095, and
C1097, and diodes D1005 and D1007 (both HVU350) to
the first mixer Q1018 (SPM5001) along with the first lo-
cal signal from the PLL circuit.
The first local signal is generated between 326.65 MHz
and 396.65 MHz by the RX VCO, which consists of FET
Q1048 (2SK508) and varactor diodes D1018 and D1019
(both 1SV282) or FET Q1049 (2SK508) and varactor di-
odes D1020 and D1021 (both 1SV282), according to the
programmed receiving frequency; the local signal then
passes through buffer amplifier Q1059 (2SC5226) and first
local amplifier Q1019 (2SC3357) to the first mixer Q1018
(SPM5001).
The 73.35 MHz first IF signal is applied to monolithic crys-
tal filters XF1001/XF1002 (for Wide) or XF1501/XF1502 (for
Narrow) which strip away unwanted mixer products, and
the IF signal is applied to the first IF amplifiers Q1022
(2SC5226: for Wide) or Q1502 (2SC5226: for Narrow).
The amplified first IF signal is then delivered to the FM IF
subsystem IC Q1028 (TA31136FN), which contains the sec-
ond mixer, second local oscillator, limiter amplifier, noise
amplifier, and FM detector.
The second local oscillator signal, generated by the 72.895
MHz crystal X1002, produces the 455 kHz second IF sig-
nal when mixed with the first IF signal within Q1028
(TA31136FN). The second IF signal passes through ceram-
ic filter CF1001 or CF1002 which strips away all but the
desired signal, and then passes through the limiter am-
plifier within Q1028 (TA31136FN) to ceramic discrimi-
nator CD1001, which removes any amplitude variations
in the 455 kHz IF signal before detection of speech. The
detected audio passes through the low pass filter, consist-
ing of R1199 and C1244, which rejects the 455 kHz IF com-
ponent.
The audio signal from the MAIN Unit is delivered to the
CNTL Unit and passes through the audio amplifier Q1020
(NJM2904V) to the active high pass filter section of Q3020
(FX805LG), which rejects the sub-audible frequency com-
ponent. The filtered audio signal is delivered to electron-
ic volume Q1056 (M51132FP), which adjusts the audio
sensitivity to compensate for audio level variations, then
Circuit Description
passes through audio amplifier Q1020 (NJM2904V), au-
dio switch Q1040 (BU4066BCFV), attenuator consisting
of R1233, and limiter amplifier Q1050 (NJM2904V), to the
electronic volume control Q1056 (M51132FP), where the
maximum deviation is set. The audio signal subsequently
passes through the 3-section active low pass filter consist-
ing of Q1017-1/-2/-3 (NJM2902V) and audio amplifier
Q1001 (NJM2902V) to providing the repeater transmit au-
dio.
A portion of the audio signal from the active high pass
filter section of Q3020 (FX805LG) is de-emphasized con-
sisting of Q3036 (TA75S01F), R3095, and C3080, provid-
ing a flat audio response. The filtered audio then passes
through the active band pass filter Q3021 (NJM2902V)
and audio mute gate Q3015 (DTC323TK) to audio power
amplifier Q1057 (TDA2003), providing up to 2 Watts of
audio power to the 8 Ohm loudspeaker.
SUB-AUDIBLE SIGNALING (DECODER)
A portion of the audio signal from the audio amplifier
Q1020 (NJM2904V) passes through the 3-section active
low pass filter Q1025 (NJM2902V) and the low pass fil-
tering section of Q3020 (FX805LG) to separate the CTC-
SS tones from the received audio signal. The CTCSS tones
are sent to the CTCSS decoder section of Q3020
(FX805LG). When a CTCSS tone is received, the CTCSS
information is delivered to pin 77 of the Main CPU Q3014
(HD64F2238) from pin 4 and 8 of Q3020 (FX805LG) which
compares the CTCSS tone with the programmed tone.
Another portion of the audio signal passes through the 3-
section active low pass filter Q3044 (NJM2902V)to sepa-
rate the DCS codes from the received audio signal. The
low pass filtered signal passes through the phase detector
Q3044 (NJM2902V) to pin 39 of the Main CPU Q3014
(HD64F2238). When a DCS code is received, the Main
CPU Q3014 (HD64F2238) compares the DCS code with
the programmed code.
If the received CTCSS tone or DCS code matches the pro-
grammed tone or code, pin 4 of the Main CPU Q3014
(HD64F2238) goes low, turning off the squelch switch
Q3015 (DTC323TK) and passing the received audio sig-
nal to the audio power amplifier Q1057 (TDA2003V).
SQUELCH CONTROL
The squelch circuit consists of noise amplifier Q1033
(2SC4116GR) and noise detector D1015 (MA143) on the
MAIN Unit, and control circuitry within Main CPU Q3014
(HD64F2238) on the CNTL Unit.
When no carrier is received, noise at the output of the au-
dio detector stage of Q1028 (TA31136FN) is amplified by
Q1033 (2SC4116GR), and then rectified by D1015 (MA143)
to provide a DC control voltage for the squelch switch.
F-1

The resulting DC voltage is delivered to pin 23 of J1005.
The DC voltage from the MAIN Unit is delivered to the
A-D analog input port (pin 51) of the Main CPU Q3014
(HD64F2238) on the CNTL Unit, which compares the
squelch threshold level to that which is memorized in EE-
PROM Q3006 (BR24L32F) or set by the front panel SQL
control.
RX PLL AND VCO CIRCUITS
The receiver’s PLL circuitry consists of PLL subsystem IC
Q1052 (MB15A02PFV1) on the MAIN Unit, which con-
tains a reference oscillator/divider, serial-to-parallel data
latch, programmable divider, phase comparator and a
swallow counter. Stability is obtained by a regulated 5
VDC supply via Q1062 (L78M05T) and temperature com-
pensated 14.4 MHz crystal oscillator X1003.
The RX VCO made up two VCO circuit, one is Low-Band
RX VCO, consisting of FET Q1048 (2SK508) and varactor
diodes D1018 and D1019 (both 1SV282), and another one
is High-Band RX VCO, consisting of FET Q1049 (2SK508)
and varactor diodes D1020 and D1021 (both 1SV282), os-
cillates between 326.65 MHz and 396.65 MHz according to
the programmed receiving frequency. The RX VCO output
passes through buffer amplifier Q1059 (2SC5226) and first
local amplifier Q1019 (2SC3357) to the first mixer Q1018
(SPM5001), as described previously. A portion of the RX
VCO output is applied to the prescaler/swallow counter
section in the PLL IC Q1052 (MB15A02PFV1). There the
RX VCO signal is divided by 64 or 65, according to a con-
trol signal from the Main CPU Q3014 (HD64F2238) on the
CNTL Unit, before being applied to the programmable di-
vider section of the PLL IC Q1052 (MB15A02PFV1).
The data latch section of the PLL IC Q1052
(MB15A02PFV1) also receives serial dividing data from
the Main CPU Q3014 (HD64F2238), which causes the pre-
divided RX VCO signal to be further divided by 75,330 ~
81,330 (or 60,264 ~ 65,064) in the programmable divider
section in the PLL IC Q1052 (MB15A02PFV1), depend-
ing upon the desired receive frequency, so as to produce
a 5 kHz (or 6.25 kHz) derivative of the current RX VCO
frequency. Meanwhile, the reference divider section of the
PLL IC Q1052 (MB15A02PFV1) divides the 14.4 MHz
crystal reference from the reference oscillator X1003 and
Q1045 (2SC4116GR) by 2880 (or 2304) to produce the 5
kHz (or 6.25 kHz) loop reference.
The 5 kHz or 6.25 kHz signal from the programmable di-
vider (derived from the RX VCO) and that derived from
the crystal are applied to the phase detector section of the
PLL IC Q1052 (MB15A02PFV1), which produces a pulsed
output with pulse duration depending on the phase dif-
ference between the input signals. This pulse train is then
converted to DC, low pass filtered, then fed back to the
RX VCO varactor diodes D1018/D1019 and D1020/D1021
(all 1SV282).
Changes in the DC voltage applied to the varactor diodes
D1018/D1019 and D1020/D1021 (all 1SV282) affect the
reactance in the tank circuit RX VCO Q1048/1049 (both
2SK508), changing the oscillating frequency according to
the phase difference between the signals derived from the
RX VCO and the crystal reference oscillator. The RX VCO
is thus phase-locked to the reference frequency standard.
TRANSMIT SIGNAL PATH
The speech audio from the CNTL Unit is applied to the
varactor diode D1010 (HVU350), which frequency modu-
lates the TX VCO from the unmodulated carrier at the
transmit frequency. The modulated transmit signal is buff-
ered by Q1026 (2SC5226), then passes through the RF am-
plifier Q1030 (2SC3357) and RF diode switch D1016
(RN739F) to the 25 W PA Unit.
The transmit signal is applied to the RF amplifier Q7003
(2SC5019) then amplified by power amplifier Q7007 (S-
AU83) up to 25 Watts. Harmonic and spurious radiation
in the final output is suppressed by a low pass filter con-
sisting of coils L7007, L7006, and L7007, and capacitors
C7055, C7057, C7058, C7059, and C7060 on the 25W PA
Unit, before delivery to the TX antenna jack.
TX PLL AND VCO CIRCUITS
The Transmitter’s PLL circuitry consists of PLL subsystem
IC Q1008 (MB15A02PFV1) on the MAIN Unit, which con-
tains a reference oscillator/divider, serial-to-parallel data
latch, programmable divider, phase comparator and a
swallow counter. Stability is obtained by a regulated 5
VDC supply via Q1062 (L78M05T) and temperature com-
pensated 14.4 MHz crystal oscillator X1001.
The TX VCO, consisting of FET Q1021 (2SK508) and var-
actor diodes D1008 and D1009 (both 1SV282), oscillates
between 450 MHz and 490 MHz according to the pro-
grammed transmit frequency. The theory of operation of
the remainder of the PLL circuitry is similar to that of the
RX PLL circuit; however, dividing data from the Main CPU
Q3014 (HD64F2238) on the CNTL Unit is such that the
VCO frequency is the actual transmit frequency.
APC (AUTOMATIC POWER CONTROL)
RF power output from the final amplifier module Q7007
(S-AU83) is sampled by C7041 and C7044, then rectified
by D7006 and D7007 (both HSM88AS). The resulting DC
voltage from the Main CPU Q3014 (HD64F2238) on the
CNTL Unit, to produce a control voltage for the Auto-
matic Power Controller Q7018 (LM2904PW), which reg-
ulates control voltage of Q7007 (S-AU83).
Circuit Description
F-2

CNTL (CONTROL)UNIT
The CNTL Unit consists of 8-bit CPU Q3014 (HD64F2238),
EEPROM Q3006 (BR24L32F), RX and TX speech audio
circuits, and various analog switches for the CPU and re-
peater interconnections.
Microprocessor operational code is stored in Q3006
(BR24L32F), while channel data and repeater configura-
tion information is programmed from an external PC con-
nected to the front panel’s MIC jack via a VPL-1 program-
ming cable.
The output from the Main CPU Q3014 (HD64F2238) con-
tains serial control data used for REPEATER/BASE mode
control, as well as TX and RX PLL data. Crystal X3002
oscillates at 12.288 MHz, and provides stable clock tim-
ing for the Main CPU. When the repeater is powered on,
the voltage at pin 62 of Q3014 (HD64F2238) becomes sta-
ble, and the output of voltage detector IC Q3012
(BD4845FVE), which is tied to pin 59 (RST) of Q3014
(HD64F2238) becomes high, resetting the Main CPU.
Circuit Description
F-3
BASE OPERATION (TX, MIC-INPUT AUDIO)
Microphone input is delivered past the MIC MUTE switch
Q4002 (DTC323TK), then passes through the audio am-
plifier and active high pass filter at Q4001 (NJM2902V)
when the signal is processed in the same manner as previ-
ously described.

Circuit Description
F-4
Note

Introduction
The VXR-9000EU has been aligned at the factory for the
specified performance across the entire frequency range
specified. Realignment should therefore not be necessary
except in the event of a component failure. All compo-
nent replacement and service should be performed only
by an authorized Vertex Standard representative, or the
warranty policy may be voided.
The following procedures cover the sometimes critical and
tedious adjustments that are not normally required once
the transceiver has left the factory. However, if damage
occurs and some parts are replaced, realignment may be
required. If a sudden problem occurs during normal op-
eration, it is likely due to component failure; realignment
should not be done until after the faulty component has
been replaced.
We recommend that servicing be performed only by au-
thorized Vertex Standard service technicians who are ex-
perienced with the circuitry and fully equipped for repair
and alignment. Therefore, if a fault is suspected, contact
the dealer from whom the transceiver was purchased for
instructions regarding repair. Authorized Vertex Standard
service technicians realign all circuits and make complete
performance checks to ensure compliance with factory
specifications after replacing any faulty components.
Those who do undertake any of the following alignments
are cautioned to proceed at their own risk. Problems
caused by unauthorized attempts at realignment are not
covered by the warranty policy. Also, Vertex Standard
must reserve the right to change circuits and alignment
procedures in the interest of improved performance, with-
out notifying owners. Under no circumstances should any
alignment be attempted unless the normal function and
operation of the transceiver are clearly understood, the
cause of the malfunction has been clearly pinpointed and
any faulty components replaced, and the need for realign-
ment determined to be absolutely necessary. The follow-
ing test equipment (and thorough familiarity with its cor-
rect use) is necessary for complete realignment. Correc-
tion of problems caused by misalignment resulting from
use of improper test equipment is not covered under the
warranty policy. While most steps do not require all of
the equipment listed, the interactions of some adjustments
may require that more complex adjustments be performed
afterwards. Do not attempt to perform only a single step
unless it is clearly isolated electrically from all other steps.
Have all test equipment ready before beginning, and fol-
low all of the steps in a section in the order presented.
Required Test Equipment
RF Signal Generator with calibrated output level at 1 GHz
AF Signal Generator
Frequency Counter: ±0.2 ppm accuracy at 1 GHz
In-line Wattmeter with 5% accuracy at 1 GHz
50-ohm, 50-W RF Dummy Load
Regulated DC Power Supply (standard 13.6V DC, 15A)
AC Voltmeter
DC Voltmeter
UHF Sampling Coupler
Microsoft® Windows® 98 or later operating system
Vertex Standard VPL-1 Connection Cable and CE60
Alignment program
Alignment Preparation & Precautions
A 50-ohm RF Dummy load and in-line wattmeter must be
connected to the main antenna jack in all procedures that
call for transmission, except where specified otherwise.
Correct alignment is not possible with an antenna.
After completing one step, read the following step to de-
termine whether the same test equipment will be required.
If not, remove the test equipment (except dummy load
and wattmeter, if connected) before proceeding.
Correct alignment requires that the ambient temperature
be the same as that of the transceiver and test equipment,
and that this temperature be held constant between 20 °C
and 30 °C. When the transceiver is brought into the shop
from hot or cold air, it should be allowed time to come to
room temperature before alignment.
Whenever possible, alignments should be made with os-
cillator shields and circuit boards firmly affixed in place.
Also, the test equipment must be thoroughly warmed up
before beginning.
Note: Signal levels in dB referred to in this procedure are
based on 0 dBµ EMF = 1.0 µV.
Alignment
G-1

Alignment
Test Setup
Setup the test equipment as shown below, apply 13.6V
DC power to the VXR-9000EU.
The VXR-9000EU must be programmed for use in the in-
tended system before alignment is attempted. The RF pa-
rameters are loaded from the file during the alignment
process.
In order to facilitate alignment over the complete switch-
ing range of the equipment it is recommended that the
channel data in the transceiver is preset as the chart be-
low.
The Alignment Tool Outline
Installation the tool
Install the CE60 (Clone Editor) to your PC.
The re-alignment for VXR-9000EU may use the “Align-
ment“ menu of CE60.
Basic sequence
The data displayed in screen of this tool is temporary data,
and there is fear that the consistence of the displayed data
and the data in the transceiver is failure when you do not
keep the sequence which is specified below.
1. Enter the alignment mode
2. Data upload
3. Align data
4. Data download
When finish the alignment one parameter, the tool ask
you “Update this data?“ If you select “Yes,“ the tempo-
rary data is updated. If you select “Yes,“ the tool down-
loaded data to the transceiver.
Menu of the Tool (BASIC ALIGNMENT)
In the Basic Alignment mode, the aligned data written in
the radio will be able to re-align its alignment data. In this
mode, there are many items to align with three point (low
edge, center and high edge) except “VCO,“ “RX Tune“
and “Mod Balance.“ The value of each parameter can be
changed to desired position by ““ / ““ arrow key for
up/down, direct number input and drag the mouse.
To enter the Basic Alignment Mode, select “Basic Align-
ment“ in the main menu “Radio.“ It will start to “Upload“
the written personalized data from the radio and to
“Download“ alignment data to the radio. Then pressing
the button “OK“ will start the Basic Alignment Mode.
Note; when all items are aligned, it is strongly recommend-
ed to align according to following order. The detail infor-
mation is written in the help of CE60 (Clone Editor).
1. RX VCO Tune Voltage (RX VCO)
2. TX VCO Tune Voltage (TX VCO)
3. PLL Reference Frequency (Frequency)
4. RX Sensitivity (RX Tune)
5. Squelch (SQL)
6. TX Power
7. Modulation Balance <Wide>
8. Modulation Balance <Narrow>
9. Maximum Deviation <Wide>
10. Maximum Deviation <Narrow>
11. Sub-Audio (CTCSS/DCS) Deviation
The alignment mode is accessed by “Alignment mode“
command from the computer whilst switching on. And
the alignment tool operates it automatically.
During the alignment mode, normal operation is suspend-
ed. Use the alignment tool program running on PC.
G-2
VXR-9000
Inline
Wattmeter
Power Supply
13.6 VDC
Deviation Meter
Frequency
Counter
RF
Signal Generator
50-Ohm
Dummy Load
MIC
COM Port
TX ANT RX ANT
RF Sampling
Coupler
DC INPUT
VPL-1
Connection Cable
FREQUENCY (SIMPLEX)
CHANNELS
Band-LOW
Band-MID
Band-HIGH
TYPE A
400.000 MHz
415.000 MHz
430.000 MHz
TYPE CS
440.000 MHz
455.000 MHz
470.000 MHz
VXR-9000EU

MAIN Unit
H-1
Circuit Diagram
0 V
RX: 8.90 V
TX: 9.00 V
RX: 0.03 V
TX: 0.79 V
1.47 V
RX: 2.05 V
TX: 0 V RX: 7.59 V
TX: 0 V
RX: 1.28 V
TX: 0 V
1.52 V
1.10 V
3.25 V
0.43 V
0 V
7.16 V
0.75 V
RX: 5.05 V
TX: 0 V
RX: 5.71 V
TX: 0 V
RX: 8.87 V
TX: 0 V
RX: 0.43 V
TX: 0.31 V
RX: 0.97 V
TX: 0.80 V
RX: 0.70 V
TX: 0.66 V
RX: 3.93 V
TX: 4.06 V
RX: 3.84 V
TX: 3.93 V
RX: 0.11 V
TX: 0.10 V
2.18 V
2.18 V
1.50 V
8.06 V
0.90 V
7.93 V 7.67 V
2.34 V
3.09 V
1.50 V
RX: 8.56 V
TX: 8.55 V
RX: 8.56 V
TX: 8.55 V
RX: 8.56 V
TX: 8.55 V
0 V RX: 8.99 V
TX: 9.00 V
5.02 V
RX: 0 V
TX: 0.51 V
RX: 0 V
TX: 1.28 V
RX: 0 V
TX: 5.91 V
7.59 V
2.28 V
3.00 V
7.85 V 0.68 V
RX: 4.25 V
TX: 4.26 V
RX: 4.07 V
TX: 4.08 V
RX: 0.96 V
TX: 0.79 V
2.06 V
2.08 V
2.10 V
4.27 V
3.65 V
3.65 V 2.02 V
2.02 V
4.08 V 4.05 V 4.05 V
4.01 V
1.97 V
1.87 V 2.00 V
1.94 V
1.96 V
0 V
RX: 13.53 V
TX: 13.29 V
RX: 6.35 V
TX: 6.23 V

MAIN Unit
H-2
Note