Yaesu vx 6r schematic
Dual-Band
Heavy Duty Submersible Transceiver
VX-6R
Technical Supplement
©2005 VERTEX STANDARD CO., LTD. EH021M90A
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
Introduction
This manual provides the technical information necessary for servicing
the VX-6R Dual-Band Heavy Duty Submersible Transceiver.
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 war-
ranty, and may be illegal in some countries.
Two PCB layout diagrams 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, and the other has either
a mixture of both chip and leaded components (trimmers, coils, electro-
lytic capacitors, ICs, etc.), or leaded components only.
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 infor-
mation would be appreciated.
Contents
Specification ............................................................................................................................................ 2
Exploded View & Miscellaneous Parts .............................................................................................4
Block Diagram ........................................................................................................................................ 5
Interconnection Diagram ...................................................................................................................... 6
Circuit Description................................................................................................................................ 7
Alignment .............................................................................................................................................. 11
Board Unit (Schematics, Layouts & Parts)
CNTL Unit ....................................................................................................................................................................... 17
AF Unit ............................................................................................................................................................................ 27
RF Unit ............................................................................................................................................................................. 37
VCO Unit ......................................................................................................................................................................... 53
1
Specifications
General
Frequency Ranges:
Channel Steps:
Frequency Stability:
Emission Type:
Antenna Impedance:
Supply Voltage:
(Negative Ground)
Current Consumption:
(Approx. @7.4 V)
Operating Temperature:
Case Size:
Weight (Approx.):
Rx 0.5 - 1.8 MHz (BC Band)
1.8 - 30 MHz (SW Band)
30-76 (59) MHz (50 MHz HAM: USA version)
76 (59)-108 MHz (FM: USA version)
108-137 MHz (Air Band)
137-174 MHz (144 MHz HAM Band)
174-222 MHz (VHF-TV Band)
222-420 MHz (ACT1: Action Band 1: USA version)
420-470 MHz (430 MHz HAM Band)
470-800 (729) MHz (UHF-TV: EXP version)
(758-774) MHz (ACT2: Action Band 2, cellular Blocked)
Tx: 144 - 146 (148) MHz
222-225 MHz (USA only)
430 - 440 (450) MHz
5/9/10/12.5/15/20/25/50/100 kHz
±5 ppm @ 14 °F to +122 °F (–10 °C to +50 °C)
F2D, F3E
50-ohm
Nominal: 7.4 V DC
Operating: 5 - 16.0 V DC (EXT DC jack)
11.0 - 16.0 V DC (EXT DC jack with Charging)
150 mA (Receive)
60 mA (Standby, Saver Off)
30 mA (Standby, Saver On)
900 µA (ON Timer Activated)
200 µA (Auto Power Off)
1.6 A (5 W TX, 144MHz)
1.5 A (1.5 W TX, 222 MHz: USA only)
1.8 A (5 W TX, 430 MHz)
–4 °F to +140 °F (–20°C to +60°C)
2.3" (W) x 3.5" (H) x 1.1" (D) (58 x 89 x 28.5 mm)
(w/o knob, antenna, and beltclip)
9.5 Oz (270 g) with FNB-80LI, and antenna
2
Transmitter
RF Power Output:
Modulation Type:
Maximum Deviation:
Spurious Emission:
Microphone Impedance:
Receiver
Circuit Type:
Intermediate Frequencies:
Sensitivity:
(Cellular Blocked)
Selectivity:
AF Output:
Specifications
High Low 3 Low 2 Low 1
144 MHz/430 MHz 5.0 W 2.5 W 1.0 W 0.3 W
220 MHz 1.5 W 1.0 W 0.5 W 0.2 W
Variable Reactance F2D, F3E
±5.0 kHz (F2D, F3E)
At least 60 dB below (@ High power)
2 k-ohm
AM, NFM: Double-Conversion Superheterodyne
WFM: Triple-Conversion Superheterodyne
1st 2nd 3rd
AM, NFM: 47.25 MHz 450 kHz
WFM: 45.8 MHz 10.7 MHz 1 MHz
1.5 µV for 10 dB SN (0.5 - 1.8 MHz, AM)
1 µV for 10 dB SN (1.8 - 30 MHz, AM)
0.35 µV TYP for 12 dB SINAD (30 - 54 MHz, NFM)
0.5 µV TYP for 12 dB SINAD (54 - 76 MHz, NFM)
0.5 µV TYP for 12 dB SINAD (54 - 59 MHz, NFM:USA)
1 µV TYP for 12 dB SINAD (76 - 108 MHz, WFM)
1 µV TYP for 12 dB SINAD (59 - 108 MHz, WFM:USA)
1.5 µV TYP for 10 dB SN (108 - 137 MHz, AM)
0.2 µV for 12 dB SINAD (137 - 140 MHz, FM)
0.16 µV for 12 dB SINAD (140 - 150 MHz, FM)
0.2 µV for 12 dB SINAD (150 - 174 MHz, FM)
0.5 µV TYP for 12 dB SINAD (174 - 250 MHz, WFM)
0.5 µV for 12 dB SINAD (300 - 350 MHz, NFM)
0.2 µV for 12 dB SINAD (350 - 420 MHz, NFM)
0.18 µV for 12 dB SINAD (420 - 470 MHz, NFM)
1 µV for 12 dB SINAD (470 - 540 MHz, WFM)
1 µV TYP for 12 dB SINAD (580 - 800 MHz, WFM)
0.5 µV TYP for 12 dB SINAD (800 - 999 MHz, NFM)
AM, NFM: 12 kHz/35 kHz (-6 dB/-60 dB)
WFM: 200 kHz/500 kHz (-6 dB/-20 dB)
200 mW @ 8 ohm for 10 % THD (@ 7.4V DC)
400 mW @ 8 ohm for 10 % THD (@ 13.8V DC)
Specifications are subject to change without notice, and are guaranteed within amateur bands only.
3
Exploded View & Miscellaneous Parts
No.
VXSTD P/N
U44104002
U9900180
U9900179
U9900181
TAPTITE SCREW M2X4NI
TAPTITE SCREW 2X5SUS(O-RING)
TAPTITE SCREW 2X22SUS(O-RING)
TAPTITE SCREW 2X3.5(CAP)
Non-designated parts are available only as part of a
designated assembly.
Description
Qty.
18
4
2
1
G6090164
LCD
RA0646600
LIGHT GUIDE(LCD)
RA0653700
WINDOW
RA0645400
DOUBLE FACE TAPE
CP8159002 (DST:USA)
CP8159003 (DST:EXP)
CP8159004 (DST:EU)
CP8159005 (DST:AUS)
FRONT CASE ASSY
RA0646500
RUBBERKEY
RA0646700
REFLECTOR SHEET
RA0646400
KNOB B
RA0646300
KNOB A
RA0577900
KNOB SCREW
RA0646800
INTER CONNECTOR
RF Unit
RA0646000
EXT CAP
RA008890A
O RING
RA0467600
O RING
RA0646100
CAP
RA0653600
RING NUT
CNTL Unit
FR013010A
FPC CABLE
AF Unit
S6000414
GAP PAD TMS-M-5 6X6 (2 pcs)
RA0646200
PACKING PAD
RA014030A
LATCH NAIL
CP8155001
REAR CASE ASSY
RA0645300
HOLDER PTT
RA0645200
PTT KNOB
RA0140100
MASK SHEET
RA0141600
RUBBER PACKING
FNB-80LI
4
Block Diagram
5
Interconnection Diagram
6
Circuit Description
The VX-6R consists of a RF-UNIT, a CNTL-UNIT and
an AF-UNIT. The RF-UNIT contains the receiver front end,
PLL IC, power and switching circuits, and the VCO-UNIT
for transmit and receive local signal oscillation. The CNTL-
UNIT contains the CPU, and audio ICs, and the power
circuitry for the LCD. The AF-UNIT contains the IF, and
audio ICs.
Receiver Signal Flow
The VX-6R includes four receiver front ends, each op-
timized for a particular frequency range and mode com-
bination.
(1) Triplexer
Signals between 0.5 and 580 MHz received at the an-
tenna terminal pass through a first low-pass filter.
Received 430 MHz band signals, after passing through
a low-pass filter to the UHF T/R switch circuit composed
of diode switch D1046, D1047.
Received 145 MHz band signals, after passing through
a low-pass filter to the VHF T/R switch circuit composed
of diode switch D1049, D1050.
Received 50 MHz band signals, after passing through
a low-pass filter to the 50MHz T/R switch circuit com-
posed of diode switch D1051, D1052.
(2) 0.50-60 MHz Reception
Received signals between 0.5 and 60 MHz pass through
the Triplexer circuit, low-pass filter circuit, T/R switch
diode D1051 and D1052 before additional filtering by a
band-pass filter prior to application to RF amplifier Q1008
(2SC5555ZD-TR). The amplified RF signal is pass through
the band-pass filter to first mixer Q1009 (2SC5555ZD-TR).
Meanwhile, 50MHz output from the VCO-UNIT is am-
plified by Q1019 (2SC5374-TL) and applied through di-
ode switch D1034 (DAN222M-T2L) to mixer Q1009
(2SC5555ZD-TR) as the first local signal. The 47.25 MHz
(Narrow, 45.8 MHz: Wide) intermediate frequency prod-
uct of the mixer is delivered to the AF-UNIT. The TUNE
voltage from the CPU on the CNTL-UNIT is amplified by
DC amplifier Q3017 (NJU7007F2-TE1) and applied to
varactor D1014 in the variable frequency band-pass fil-
ters. By changing the electrostatic capacitance of the var-
actors, optimum filter characteristics are provided for each
specific operating frequency.
(3) 60-300MHz Reception
Received signals between 60 and 300 MHz pass
through the Triplexer circuit, low-pass filter/high-pass
filter circuit, VHF T/R switch circuit and protector diode
D1002 (1SS362-TE85R) before additional filtering by a
band-pass filter prior to application to RF amplifier Q1002
(2SC5555ZD-TR). The amplified RF signal is pass through
the band-pass filter to first mixer Q1007 (2SC5555ZD-TR).
Meanwhile, VHF output from the VCO-UNIT is ampli-
fied by Q1018 (2SC5374-TL) and applied through diode
T/R switch D1033 (DAN222M-T2L) to mixer Q1007
(2SC5555ZD-TR) as the first local signal. The 47.25 MHz
(Narrow, 45.8 MHz: Wide) intermediate frequency prod-
uct of the mixer is delivered to the AF-UNIT. The TUNE
voltage from the CPU on the CNTL-UNIT is amplified by
DC amplifier Q3017 (NJU7007F2-TE1) and applied to
varactors D1008 and D1009, D1011, D1012, D1020, D1021,
D1022, D1023, D1025 and D1026 in the variable frequen-
cy band-pass filters. By changing the electrostatic capaci-
tance of the varactors, optimum filter characteristics are
provided for each specific operating frequency.
(4) 300-580MHz Reception
Received signals between 300 and 580 MHz pass
through the Triplexer circuit, low-pass filter/high-pass
filter circuit, UHF T/R switch circuit and protector diode
D1001 before additional filtering by a band-pass filter prior
to application to RF amplifier Q1001 (2SC5555ZD-TR).
The amplified RF signal is pass through the band-pass
filter, RF amplifier Q1004 (2SC5555ZD-TR) and band-
pass filter to first mixer Q1006 (2SC5555ZD-TR). Mean-
while, UHF output from the VCO-UNIT is amplified by
Q1017 (2SC5374-TL) and applied through diode T/R
switch D1035 (HN2D01FUTE85R) to mixer Q1006 as the
first local signal. The 47.25 MHz (Narrow, 45.8 MHz:
Wide) intermediate frequency product of the mixer is
delivered to the AF-UNIT. The TUNE voltage from the
CPU on the CNTL-UNIT is amplified by DC amplifier
Q3017 (NJU7007F2-TE1) and applied to varactors D1006,
D1007, D1018 and D1019 in the variable frequency band-
pass filters. By changing the electrostatic capacitance of
the varactors, optimum filter characteristics are provided
for each specific operating frequency.
(5) 580 - 999 MHz Reception
Received signals between 580 and 999 MHz pass
through the high-pass filter circuit, switch D1003 to ap-
7
Circuit Description
plication to RF amplifier Q1003 (2SC5277-D2-TL) and
Q1005 (2SC5277-D2-TL). The amplified RF signal is pass
through the band-pass filter to first mixer Q1010
(2SC5277-D2-TL). Meanwhile, UHF output from the
VCO-UNIT is amplified by Q1017 (2SC5374-TL) and ap-
plied through diode T/R switch D1035
(HN2D01FUTE85R) to mixer Q1010 (2SC5277-D2-TL) as
the first local signal. The (Narrow, 45.8 MHz: Wide) in-
termediate frequency product of the mixer is delivered to
the AF-UNIT. The TUNE voltage from the CPU on the
CNTL-UNIT is amplified by DC amplifier Q3017
(NJU7007F2-TE1) and applied to varactors D1016 and
D1017 in the variable frequency band-pass filters. By
changing the electrostatic capacitance of the varactors,
optimum filter characteristics are provided for each spe-
cific operating frequency.
(6) 47.25 MHz First Intermediate Frequency
The 47.25 MHz first intermediate frequency from first
mixers is delivered from the RF-UNIT to the AF-UNIT
through jacks J1002 and J2002. On the AF-UNIT, the IF
for AM and FM-narrow signals is passed through NAR/
WIDE switch D2001 (DAP222-TL) and D2003 (DAN222M-
T2L), and 47.25 MHz monolithic crystal filter (MCF)
XF2001 to narrow IF amplifier Q2005 (2SC4915) for in-
put to pin 16 of Narrow IF IC Q2010 (TA31136FN) after
amplitude limiting by D2002 (DA221-TL). Meanwhile, a
portion of the output of 11.7 MHz crystal X1001 on RF-
UNIT is multiplied fourfold by Q2008 (2SC4915) and
Q2009 (2SC4915) to provide the 46.8 MHz second local
signal, applied to the Narrow IF IC. Within the IC, this
signal is mixed with the 47.25 MHz first intermediate fre-
quency signal to produce the 450 kHz second intermedi-
ate frequency.
This second IF is filtered by ceramic filter CF2002 and
amplified by the limiting amplifier within the Narrow IF
IC before quadrate detection by ceramic discriminator
CD2001. Demodulated audio is output from pin 9 of the
Narrow IF IC through narrow mute analog switch Q2019
(2SJ364-R) and squelch gate Q2020 (2SC4617 TL R) be-
fore de-emphasis.
The resulting audio is amplified by AF amplifier Q2028
(TDA7233D-TR) and output through MIC/EAR jack J2001
to internal speaker SP3001 or an external earphone.
(7) Squelch Control
Signal components in the neighborhood of 15 kHz con-
tained in the discriminator output pass through an active
band-pass filter composed of R2041, R2043, R2044, C2049,
C2055 and the operational amplifier between pins 7 and
8 within Narrow IF IC Q2010 (TA31136FN). They are then
rectified by D2006 and D2007 (both DA221-TL) to obtain
a DC voltage corresponding to the level of noise. This volt-
age is input to pin 51 of CPU Q3032 (HD64F2266TF13),
which compares the input voltage with a previously set
threshold. When the input voltage drops below the thresh-
old, normally due to the presence of a carrier, turning on
squelch gate Q2027 (2SJ364-R) and allowing any demod-
ulated audio to pass. At the same time, Q3001 (DTC144EE
TL) and/or Q3005 (DTC144EE TL) and/or Q3006
(DTC144EE TL) goes on, causing the BUSY/TX lamp
D3001 and D3012 to light.
Transmitter Signal Flow
(1) Transmit/Receive Switching
Closing PTT switch S2001 on the AF-UNIT pulls the
base of Q3007 (DTA144EE TL) low, causing the collector
to go high. This signal is input to pin 45 (PTT) of CPU
Q3032 (HD64F2266TF13), allowing the CPU to recognize
that the PTT switch has been pushed. When the CPU de-
tects closure of the PTT switch, pin 9 of Q3020 (TX)
(BU2099FV-E2) goes high. This control signal is deliv-
ered to the RF-UNIT, where it switches Q1039 (2SA1774
TL R) and Q1040 (2SA1774 TL R) to produce the TX con-
trol signal that activates Q1031 (2SA1774 TL R). At the
same time, PLL division data is input to PLL IC Q1020
(MB15A01PFV1-G-BND-EF) from the CPU, to disable the
receiver power saver. Also, switching Q1030 (EMB3 T2R)
to disable the receiver circuits. Then causing the red side
of BUSY/TX lamp D3011 to light.
(2) Modulation
Voice signal input from either built-in microphone
MC3001 on CNTL-UNIT or external jack J2001 on the AF-
UNIT is pre-emphasized by C3014 and R3031, and pro-
cessed by microphone amplifier and IDC (instantaneous
deviation control) circuit Q3008 (NJM3403AV-TE1) to
prevent overmodulation, and active low-pass filter sec-
tion of Q3008 (NJM3403AV-TE1).
8
Circuit Description
During CTCSS operation, the voice signal is mixed
with the TONE ENC subaudible tone signal from pin 43
of the CPU and delivered to the RF-UNIT through jacks
J3003 and J1002. During DTMF operation, the DTMF tones
from pin 55 of the CPU are input to the IDC stage.
(3) VHF Band (145/220 MHz) Transmission
Modulating audio from the CNTL-UNIT passes
through deviation setting D/A converter Q3011
(M62364FP 600D) to VHF MOD of the VCO-UNIT
mounted on the RF-UNIT. This signal is applied to varac-
tor D4005 in the tank circuit of VHF VCO Q4004
(EC3H07B-TL), which oscillates at the desired VHF trans-
mitting frequency. The modulated VCO signal is buffered
by amplifier Q4006 (EC3H07B-TL) and Q1018
(2SC5555ZD-TR) and delivered through VHF T/R diode
switch D1033 (DAN222M-T2L) to the RF-UNIT. The mod-
ulated low-level VHF transmit signal from the VCO is
passed through diode switch D1029 (DAN222M-T2L) to
amplifier Q1011 (2SC5226-5-TL). The modulated VHF
transmit signal from the VCO is amplified by Q1015
(2SK3475) and RF power amplifier Q1023 (2SK3476) up
to 5 W (depending on the power source). The RF output
passes through TX diode switch D1049. RF output is
passed by T/R switch and low-pass filter to suppress har-
monics and spurious products before output to the an-
tenna at the antenna terminal.
(4) UHF Band Transmission
Modulating audio from the CNTL-UNIT passes
through deviation setting D/A converter Q3011
(M62364FP 600D) to UHF MOD of the VCO-UNIT
mounted on the RF-UNIT. This signal is applied to varac-
tor D4002 in the tank circuit of UHF VCO Q4002
(EC3H07B-TL), which oscillates at the desired UHF trans-
mitting frequency. The modulated VCO signal is buffered
by amplifier Q4006 (EC3H07B-TL) and Q1017
(2SC5555ZD-TR) and delivered through UHF T/R diode
switch D1035 (HN2D01FUTE85R) to the RF-UNIT. The
modulated low-level UHF transmit signal from the VCO
is passed through diode switch D1029 (DAN222M-T2L)
to amplifier Q1011 (2SC5226-5-TL). The modulated UHF
transmit signal from the VCO is amplified by Q1015
(2SK3475) and RF power amplifier Q1023 (2SK3476) up
to 5 W (depending on the power source). The RF output
passes through TX diode switch D1046. RF output is
passed by T/R switch and low-pass filter to suppress har-
monics and spurious products before output to the an-
tenna at the antenna terminal.
PLL Frequency Synthesizer
PLL IC Q1020 (MB15A01PFV1-G-BND-EF) on the RF-
UNIT consists of a data shift register, reference frequency
divider, phase comparator, charge pump, intermittent
operation circuit, and band selector switch. Serial PLL data
from the CPU is converted into parallel data by the shift
register in the PLL IC and is latched into the comparative
frequency divider and reference frequency divider to set
a frequency dividing ratio for each. An 11.7 MHz refer-
ence signal produced by X1001 is input to REF pin 1 of
the PLL IC. The internal reference frequency divider di-
vides the 11.7 MHz reference by 2,050 (or 1,640) to obtain
a reference frequency of 5 kHz (or 6.25 kHz), which is
applied to the phase comparator. Meanwhile, a sample of
the output of VHF VCO Q4004 (EC3H07B-TL) or UHF
VCO Q4002 (EC3H07B-TL) on the VCO-UNIT, buffered
by Q4006 (EC3H07B-TL), is input to the PLL IC, where it
is frequency-divided by the internal comparative frequen-
cy divider to produce a comparative frequency also ap-
plied to the phase comparator. The phase comparator com-
pares the phase between the reference frequency and com-
parative frequency to output a pulse corresponding to the
phase difference between them. This pulse is input to the
charge pump, and the output from the charge pump pass-
es through a loop filter composed of L1043, C1121, R1080,
R1079, and either R1082, C1139, R1093 and C1145 for VHF,
or R1081, C1138, R1092 and C1140 for UHF, which con-
vert the pulse into a corresponding smoothed varactor
control voltage (VCV). The VCV is applied to varactor
D4004 and D4013 in the VHF VCO tank circuit, or to var-
actor D4001 in the UHF VCO tank circuit, to eliminate
phase difference between the reference frequency and
comparative frequency, and so locking the VCO oscilla-
tion frequency to the reference crystal. The VCO frequen-
cy is determined by the frequency-dividing ratio sent from
the CPU to the PLL IC. During receiver power save oper-
ation, the PLL circuit operates intermittently to reduce
current consumption, for which the intermittent opera-
tion control circuit reduces the lock-up time.
9
Circuit Description
Note:
10
Alignment
Introduction
The VX-6R is carefully aligned at the factory for the
specified performance across the amateur band. Realign-
ment should therefore not be necessary except in the event
of a component failure. Only an authorized VERTEX
STANDARD representative should perform all compo-
nent replacement and service, or the warranty policy may
be void. The following procedures cover the adjustments
that are not normally required once the transceiver has
left the factory. However, if damage occurs and some parts
subsequently are replaced, realignment may be required.
If a sudden problem occurs during normal operation, it is
likely due to component failure; realignment should not
be done until after the faulty component has been re-
placed. We recommend that servicing be performed only
by authorized VERTEX STANDARD service technicians
who are experienced with the circuitry and fully equipped
for repair and alignment. If a fault is suspected, contact
the dealer from whom the transceiver was purchased for
instructions regarding repair. Authorized VERTEX STAN-
DARD service technicians realign all circuits and make
complete performance checks to ensure compliance with
factory specifications after replacing any faulty compo-
nents. Those who do undertake any of the following align-
ments are cautioned to proceed at their own risk. Prob-
lems caused by unauthorized attempts at realignment are
not covered by the warranty policy. Also, VERTEX STAN-
DARD reserves 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 at-
tempted unless the normal function and operation of the
transceiver are clearly understood, the cause of the mal-
function has been clearly pinpointed and any faulty com-
ponents replaced, and realignment determined to be ab-
solutely necessary.
The following test equipment (and familiarity with its
use) is necessary for complete realignment. Correction of
problems caused by misalignment resulting from use of
improper test equipment is not covered under the war-
ranty 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
P RF Signal Generator with calibrated output level at 500 MHz
P Deviation Meter (linear detector)
P In-line Wattmeter with 5% accuracy at 500 MHz
P 50-ohm, 10-W RF Dummy Load
P 8-ohm AF Dummy Load
P Regulated DC Power Supply adjustable from 3 to 15 V DC, 3A
P Frequency Counter: 0.2-ppm accuracy at 500 MHz
P AF Signal Generator
P AC Voltmeter
P DC Voltmeter: high impedance
P UHF Sampling Coupler
P SINAD Meter
Alignment Preparation & Precautions
A 10 W RF dummy load and in-line wattmeter must
be connected to the main antenna jack in all procedures
that call for transmission, alignment is not possible with
an antenna. After completing one step, read the next step
to see if the same test equipment is required. If not, re-
move the test equipment (except dummy load and watt-
meter, if connected) before proceeding.
Correct alignment requires that the ambient tempera-
ture be the same as that of the transceiver and test equip-
ment, and that this temperature be held constant between
68 ~ 86 °F (20 ~ 30 °C). When the transceiver is brought
into the shop from hot or cold air, it should be allowed
some 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 the alignment procedure
are based on 0 dBµ=0.5 µV (closed circuit).
Test Setup
Set up the test equipment as shown below for transceiv-
er alignment, and apply 8.9 V DC power to the transceiver.
Refer to the drawings for Alignment Points.
RF Signal
Generator
In-Line
Wattmeter
50-ohm RF
Dummy Load
Deviation
Meter
Frequency
Counter
Sampling
Coupler
Alignment Setup
8-ohm
AF Load
SINAD
Meter
11
Alignment
Internal System Alignment Routine
This uses a programmed routine in the transceiver
which simplifies many previously complex discrete com-
ponent settings and adjustments with digitally-controlled
settings via front panel buttons and LCD indications.
To begin, set the transceiver to the center of the 144
MHz, 220 MHz and 430 MHz bands. Next, select the 430
MHz band, then turn the transceiver off.
[
Now, press and hold the [BAND] ,
(at the same time) while powering the radio on again. The
display will show the first setting.
Note: that the first few settings are not adjustable and are
left as set from the factory.
In the alignment process, each adjustment is selected
by rotating the DIAL. Alignment is performed by:
P Pressing the
P Injecting a signal of the required frequency and level;
[
V/M] button;
then
P Pressing the
[
V/M] button after a level setting or adjust-
ment is made. This second pressing of the [V/M] button
stores the entry.
To exit the alignment routine, press the [HOME] but-
ton. After performing the system alignment in its entire-
ty, individual settings can be returned to and adjust should
the need arise
In the section to follow, typical default values (as set
at the factory) are shown in brackets (e.g. [119]), to serve
as a general guideline. As each transceiver is individual-
ly optimized at the factory, the precise settings for the
transceiver on your bench may be slightly different.
]
and [0] buttons
Squelch Preset Tight (TLG) [136]
P Press the
[
V/M] button, then adjust the generator level
to –4.0 dBµ, then press the [V/M] button. Rotate the DIAL
to select the next setting.
S-Meter S-1 Adjustment (S1) [27]
P Press the
[
V/M] button, then adjust the generator level
to –8.0 dBµ (1 kHz tone @ ±3.5 kHz deviation), then
press the [V/M] button. Rotate the DIAL to select the next
setting.
S-Meter Full-Scale Adjustment (S9) [66]
P Press the
[
V/M] button, then adjust the generator level
to +20 dBµ (1 kHz tone @ ±3.5 kHz deviation), then press
the [V/M] button. Rotate the DIAL to select the next set-
ting.
Wide-FM S-Meter S-1 Adjustment (S1) [53]
P Press the
[
V/M] button, then adjust the generator level
to 0 dBµ (1 kHz tone @ ±20 kHz deviation), then press
the [V/M] button. Rotate the DIAL to select the next set-
ting.
Wide-FM S-Meter Full-Scale Adjustment (S9) [77]
P Press the
[
V/M] button, then adjust the generator level
to +20 dBµ (1 kHz tone @ ±20 kHz deviation), then press
the [V/M] button. Rotate the DIAL to select the next set-
ting.
High TX Power Adjustment (HP) [220]
P Press the
[
V/M] button, then transmit, and adjust the
output power level for 5.0 W ±0.3 W by rotating the
DIAL, then press the [V/M] button. Rotate the DIAL to
select the next setting.
PLL Reference Frequency (REF)
Press the [V/M] button, then transmit and adjust the
counter frequency to 440.000 (±300 Hz) by rotating the
DIAL, then press the [V/M] button. Rotate the DIAL to se-
lect the next setting.
430 MHz band Alignment
Squelch Preset Threshold (THL) [167]
P Press the
(1 kHz tone @ ±3.5 kHz deviation), then rotate the DIAL
for minimum squelch hysteresis, then press the [V/M
button. Rotate the DIAL to select the next setting.
12
[
V/M] button, then inject a –12.0 dBµ RF signal
LOW3 Tx Power Adjustment (LP3) [166]
P Press the
[
V/M] button, then transmit, and adjust the
output power level for 2.5 W ±0.2 W by rotating the
DIAL, then press the [V/M] button. Rotate the DIAL to
select the next setting.
L2 Tx Power Adjustment (LP2) [125]
P Press the
[
V/M] button, then transmit, and adjust the
output power level for 1.0 W ±0.1 W by rotating the
DIAL, then press the [V/M] button. Rotate the DIAL to
select the next setting.
]
L1 Tx Power Adjustment (LP1) [95]
P Press the
[
V/M] button, then transmit, and adjust the
output power level for 0.3 W ±0.1 W by rotating the
DIAL, then press the [V/M] button. Rotate the DIAL to
select the next setting.
Alignment
TX Deviation Adjustment (DEU) [65]
P Inject a 1 kHz audio tone at a level of 50mV (rms) to the
MIC jack. Press the [V/M] button, then transmit and ad-
just the deviation for 4.2 kHz ±0.2 kHz by rotating DIAL,
then press the [V/M] button. Rotate the DIAL to select
the next setting.
CTCSS Tx Deviation Adjustment (100) [15]
P Press the
[
V/M] button, then transmit and adjust the de-
viation for 0.6 kHz ±0.05 kHz by rotating DIAL, then
press the [V/M] button. Rotate the DIAL to select the next
setting.
DCS Tx Deviation Adjustment (DCS) [15]
P Press the
[
V/M] button, then transmit and adjust the de-
viation for 0.6 kHz ±0.05 kHz by rotating DIAL, then
press the [V/M] button. Rotate the DIAL to select the next
setting.
This completes the 430 MHz band internal alignment rou-
tine; press the [BAND] button to activate the 50 MHz band
internal alignment routine.
50 MHz band Alignment
Squelch Preset Threshold (THL) [156]
P Press the
(1 kHz tone @ ±3.5 kHz deviation), then press the [V/M
button. Rotate the DIAL to select the next setting.
Squelch Preset Tight (TLG) [124]
P Press the
to 0 dBµ, then press the [V/M] button. Rotate the DIAL
to select the next setting.
S-Meter S-1 Adjustment (S1) [40]
P Press the
to –3.0 dBµ (1 kHz tone @ ±3.5 kHz deviation), then
press the [V/M] button. Rotate the DIAL to select the next
setting.
S-Meter Full-Scale Adjustment (S9) [71]
P Press the
to +20 dBµ (1 kHz tone @ ±3.5 kHz deviation), then press
the [V/M] button. Rotate the DIAL to select the next set-
ting.
Wide-FM S-Meter S-1 Adjustment (S1) [62]
P Press the
to +8 dBµ (1 kHz tone @ ±20 kHz deviation), then press
the [V/M] button. Rotate the DIAL to select the next set-
ting.
[
V/M] button, then inject a –8.0 dBµ RF signal
[
V/M] button, then adjust the generator level
[
V/M] button, then adjust the generator level
[
V/M] button, then adjust the generator level
[
V/M] button, then adjust the generator level
Wide-FM S-Meter Full-Scale Adjustment (S9) [83]
P Press the
[
V/M] button, then adjust the generator level
to +25 dBµ (1 kHz tone @ ±20 kHz deviation), then press
the [V/M] button. Rotate the DIAL to select the next set-
ting.
This completes the 50 MHz band internal alignment rou-
tine; press the [BAND] button to activate the 145 MHz band
internal alignment routine.
144 MHz Band Alignment
Squelch Preset Threshold (THL) [171]
P Press the
(1 kHz tone @ ±3.5 kHz deviation), then press the [V/M
button. Rotate the DIAL to select the next setting.
Squelch Preset Tight (TLG) [142]
P Press the
to –4.0 dBµ, then press the [V/M] button. Rotate the DIAL
to select the next setting.
S-Meter S-1 Adjustment (S1) [27]
P Press the
to –8.0 dBµ (1 kHz tone @ ±3.5 kHz deviation), then
press the [V/M] button. Rotate the DIAL to select the next
setting.
]
S-Meter Full-Scale Adjustment (S9) [65]
P Press the
to +20 dBµ (1 kHz tone @ ±3.5 kHz deviation), then press
the [V/M] button. Rotate the DIAL to select the next set-
ting.
Wide-FM S-Meter S-1 Adjustment (S1) [55]
P Press the
to 0 dBµ (1 kHz tone @ ±20 kHz deviation), then press
the [V/M] button. Rotate the DIAL to select the next set-
ting.
Wide-FM S-Meter Full-Scale Adjustment (S9) [79]
P Press the
to +20 dBµ (1 kHz tone @ ±20 kHz deviation), then press
the [V/M] button. Rotate the DIAL to select the next set-
ting.
High TX Power Adjustment (HP) [198]
P Press the
output power level for 5.0 W ±0.3 W by rotating the
DIAL, then press the [V/M] button. Rotate the DIAL to
select the next setting.
[
V/M] button, then inject a –12.0 dBµ RF signal
[
V/M] button, then adjust the generator level
[
V/M] button, then adjust the generator level
[
V/M] button, then adjust the generator level
[
V/M] button, then adjust the generator level
[
V/M] button, then adjust the generator level
[
V/M] button, then transmit, and adjust the
]
13
Alignment
L3 Tx Power Adjustment (LP3) [159]
P Press the
[
V/M] button, then transmit, and adjust the
output power level for 2.5 W ±0.2 W by rotating the
DIAL, then press the [V/M] button. Rotate the DIAL to
select the next setting.
L2 Tx Power Adjustment (LP2) [124]
P Press the
[
V/M] button, then transmit, and adjust the
output power level for 1.0 W ±0.1 W by rotating the
DIAL, then press the [V/M] button. Rotate the DIAL to
select the next setting.
L1 Tx Power Adjustment (LP1) [96]
P Press the
[
V/M] button, then transmit, and adjust the
output power level for 0.3 W ±0.1 W by rotating the
DIAL, then press the [V/M] button. Rotate the DIAL to
select the next setting.
TX Deviation Adjustment (DEU) [100]
P Inject a 1 kHz audio tone at a level of 50mV (rms) to the
MIC jack. Press the [V/M] button, then transmit and ad-
just the deviation for 4.2 kHz ±0.2 kHz by rotating DIAL,
then press the [V/M] button. Rotate the DIAL to select
the next setting.
CTCSS Tx Deviation Adjustment (100) [18]
P Press the
[
V/M] button, then transmit and adjust the de-
viation for 0.6 kHz ±0.05 kHz by rotating DIAL, then
press the [V/M] button. Rotate the DIAL to select the next
setting.
DCS Tx Deviation Adjustment (DCS) [56]
P Press the
[
V/M] button, then transmit and adjust the de-
viation for 0.6 kHz ±0.05 kHz by rotating DIAL, then
press the [V/M] button. Rotate the DIAL to select the next
setting.
This completes the 144 MHz band internal alignment rou-
tine; press the [BAND] button to activate the 220 MHz band
internal alignment routine.
220 MHz Band Alignment
Squelch Preset Threshold (THL) [167]
P Press the
(1 kHz tone @ ±3.5 kHz deviation). Press the [V/M] but-
ton, then rotate the DIAL to select the next setting.
Squelch Preset Tight (TLG) [136]
P Press the
to –4.0 dBµ, then press the [V/M] button. Rotate the DIAL
to select the next setting.
[
V/M] button, then inject a –12.0 dBµ RF signal
[
V/M] button, then adjust the generator level
S-Meter S-1 Adjustment (S1) [27]
P Press the
[
V/M] button, then adjust the generator level
to –8.0 dBµ (1 kHz tone @ ±3.5 kHz deviation), then
press the [V/M] button. Rotate the DIAL to select the next
setting.
S-Meter Full-Scale Adjustment (S9) [66]
P Press the
[
V/M] button, then adjust the generator level
to +20 dBµ (1 kHz tone @ ±3.5 kHz deviation), then press
the [V/M] button. Rotate the DIAL to select the next set-
ting.
Wide-FM S-Meter S-1 Adjustment (S1) [53]
P Press the
[
V/M] button, then adjust the generator level
to 0 dBµ (1 kHz tone @ ±20 kHz deviation), then press
the [V/M] button. Rotate the DIAL to select the next set-
ting.
Wide-FM S-Meter Full-Scale Adjustment (S9) [77]
P Press the
[
V/M] button, then adjust the generator level
to +20 dBµ (1 kHz tone @ ±20 kHz deviation), then press
the [V/M] button. Rotate the DIAL to select the next set-
ting.
High TX Power Adjustment (HP) [132] (USA version only)
P Press the
[
V/M] button, then transmit, and adjust the
output power level for 1.5 W ±0.3 W by rotating the
DIAL, then press the [V/M] button. Rotate the DIAL to
select the next setting.
LOW3 Tx Power Adjustment (LP3) [120] (USA version
only)
P Press the
[
V/M] button, then transmit, and adjust the
output power level for 1.0 W ±0.2 W by rotating the
DIAL, then press the [V/M] button. Rotate the DIAL to
select the next setting.
L2 Tx Power Adjustment (LP2) [103] (USA version only)
P Press the
[
V/M] button, then transmit, and adjust the
output power level for 0.5 W ±0.1 W by rotating the
DIAL, then press the [V/M] button. Rotate the DIAL to
select the next setting.
L1 Tx Power Adjustment (LP1) [89] (USA version only)
P Press the
[
V/M] button, then transmit, and adjust the
output power level for 0.2 W ±0.1 W by rotating the
DIAL, then press the [V/M] button. Rotate the DIAL to
select the next setting.
14
TX Deviation Adjustment (DEU) [62] (USA version only)
P Press the
a level of 50mV (rms) to the MIC jack. Press the [V/M
button, then transmit and adjust the deviation for 4.2
kHz ±0.2 kHz by rotating DIAL, then press the [V/M
button. Rotate the DIAL to select the next setting.
CTCSS Tx Deviation Adjustment (100) [29] (USA version
only)
P Press the
viation for 0.6 kHz ±0.05 kHz by rotating DIAL, then
press the [V/M] button. Rotate the DIAL to select the next
setting.
DCS Tx Deviation Adjustment (DCS) [30] (USA version
only)
P Press the
viation for 0.8 kHz ±0.05 kHz by rotating DIAL, then
press the [V/M] button.
[
V/M] button, then inject a 1 kHz audio tone at
[
V/M] button, then transmit and adjust the de-
[
V/M] button, then transmit and adjust the de-
Alignment
]
]
This completes the internal alignment routine for all bands.
To save all settings and exit, press the [HM/RV] button.
15
Alignment
Note:
16
Circuit Diagram
6.8V:LAMP on
(5.9V):LAMP off
0V:LAMP on
(0.57V):LAMP off
6.25V
(6.6V)
2.95V
(0V)
0.75V
(0V)
6.9V
(6.4V)
0V (2.95V)
0V
(1V)
1.2V(1.2V)
1.2V(1.2V)
6.8V:LAMP on
(6.3V):LAMP off
1.99V:LAMP on
(0.8V):LAMP off
5.8V
(5.7V)
0V
(0V)
1.2V
(1.2V)
0V (0V)
2.93V
(2.93V)
0.8V
(0.8V)
0V
(0.8V)
0.8V
(1.7V)
0V (0V)
0V (0V)
1.1V
(1.1V)
2.98V
(2.98V)
0.8V (0.8V)
0.6V
(0.6V)
1.2V (1.2V)
0V
(0.8V)
0.8V
(0.8V)
0V (0V)
0.8V
(1.6V)
0.56V
(0.32V)
0V (1.0V)
0V
(1.4V)
1.2V (1.2V)
0V (0V)
0.46V (0.65V)
1.4V
(0.8V)
3.0V
(3.0V)
2.15V
(2.15V)
0.43V
(0V)
1.2V
(0V)
0V (0.6V)
0V (1.7V)
0.3V
(0.63V)
0V (0V)
0.58V (0.33V)
0.42V
(0V)
0V (0.4V)
1.89V
(0V)
1.0V
(1.5V)
3.0V
(3.0V)
6.5V
(6.5V)
6.52V
(6.52V)
0V
(0V)
0V
(0V)
3V
(3V)
2.98V (0V)
3.0V
(3.0V)
0V
(0V)
3V (3V)
3.18V (3.18V)
3V
(3V)
0V(0V)
8.0V(8.0V)
2.8V
(2.8V)
1.27V
2.46V
(2.46V)
8.3V
(8.3V)
8.2V
(8.1V)
7.63V
(7.58V)
8.4V
(8.3V)
2.9V
(2.9V)
8.2V
(8.1V)
3.0V
(3.0V)
2.95V
(2.95V)
0V(0V)
2.68V
(2.68V)
2.98V
(2.98V)
2.79V
(2.79V)
CNTL Unit (Lot. 1~2)
3V(3V)
2.68V
(2.68V)
3.0V
(3.0V)
NOTE:
RESISTOR VALUES ARE IN Ω. 1/16W ;
CAPACITOR VALUES ARE IN µF. 50V ;
(T) CAPACITOR VALUES ARE TANTALUM ;
ELECTOROLYTIC CAPACITORS ARE IN µF. 16V ;
INDUCTOR VALUES ARE IN H ;
COIL VALUES ARE IN H ;
UNLESS OTHERWISE NOTED.
2.98V
(1.3V)
××××
×× : RX
××××
××××
(
××) : TX
××××
2.98V
(1.3V)
1.23V
2.98V
(1.3V)
(1.23V)
0V
(2.92V)
1.23V (1.23V)
2.98V
(2.98V)
Frequency:145.000 MHz, TX Power:Low1, EXT DC:8.4 V
0V
(2.95V)
2.95V
(0V)
2.8V
(2.8V)
2.9V
(2.9V)
0V
(0V)
1.17V
(1.17V)
0V
(0V)
1.27V
(1.27V)
2.4V (0V)
2.1V(2.1V)
0V(0V)
0V
(2V)
0V
(3V)
0V
(0V)
1.3V
(1.3V)
2.1V(6V)
2.5V(0V)
0V
(0.3V)
1.0V
(1.5V)
2V
(6V)
0V
(0V)
3V
(3V)
3V
(0.3V)
0V(0V)
1V
(1V)
2V
(2V)
3V
(3V)
1.5V
(1.5V)
2.95V (2.95V)
0V
(2V)
0V
(0V)
2.9V (2.9V)
0V (0V)
17
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