Yaesu FT-897 Manual

1
Introduction
This manual provides technical information necessary for servicing the FT-897/D HF/VHF/UHF ALL MODE Trans-
ceiver.
Servicing this equipment requires expertise in handling 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 circuit board in the Transceiver. Each side of is referred to
by the type of the majority of components installed on that side (“leaded” or “chip-only”). In most cases one side has only
chip components, and the other has either a mixture of both chip and leaded components (trimmers, coils, electrolytic
capacitors, ICs, etc.), or leaded components only.
While we believe the technical 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.
©2010 VERTEX STANDARD CO., LTD. EH012M90D
Technical Supplement
FT-897/-897D
HF/VHF/UHF
ALL MODE Transceiver
Specifications ................................................... 2
Exploded View & Miscellaneous Parts ....... 4
Block Diagram.................................................. 5
Circuit Description ......................................... 7
Alignment ....................................................... 10
Contents
Board Unit ( Schematics, Layouts & Parts )
MAIN Unit ............................................................... 23
PLL Unit ....................................................................69
PA Unit ......................................................................89
PANEL Unit ........................................................... 117
MIC Unit ................................................................. 137
VR Unit ................................................................... 140
BATT-CONN Unit ................................................. 141
REF Unit .................................................................. 142
TCXO-9 Unit .......................................................... 143
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 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
VERTEX STANDARD (AUSTRALIA)PTY., LTD.
Normanby Business Park, Unit 14/45 Normanby Road
Notting Hill 3168, Victoria, Australia

2
Specifications
General
Frequency Range:
Emission Modes:
Synthesizer Steps (Min.):
Antenna Impedance:
Operating Temp. Range:
Frequency Stability:
Supply Voltage:
Current Consumption:
Case Size (W x H x D):
Weight (Approx.):
Transmitter
RF Power Output (@13.8 V DC):
Modulation Types:
FM Maximum Deviation:
Spurious Radiation:
Carrier Suppression:
Opp. Sideband Suppression:
SSB Frequency Response:
Microphone Impedance:
Receive: 0.1-56 MHz, 76-108 MHz, 118-164 MHz, 420-470 MHz
Transmit: 160 - 6 Meters, 2 Meters, 70 Centimeters (Amateur bands only)
5.1675 MHz (Alaska Emergency Frequency: USA only)
A1 (CW), A3 (AM), A3J (LSB/USB), F3 (FM), F1 (9600 bps packet), F2 (1200 bps packet)
10 Hz (CW/SSB), 100 Hz (AM/FM/WFM)
50 Ohms, Unbalanced (M)
+14 °F to +140 °F (–10 °C to +60 °C)
±4 ppm from 1 min. to 60 min after power on. @25 °C: 1 ppm/hour
±0.5 ppm/1 hour @25 °C, after warmup (FT-897: with optional TCXO-9)
Normal: 13.8 VDC ±15 %, Negative Ground
FNB-78 (Ni-MH Battery Pack): 13.2 V (Option)
Squelched: 600 mA (Approx.)
Receive: 1 A
Transmit: 22 A
7.87” x 3.15” x 10.3” (200 x 80 x 262 mm)
8.6 lb (3.9 kg) (w/o Ni-MH battery, antenna, Microphone)
SSB/CW/FM AM Carrier
160- 6 Meter: 100 W 25 W
2 Meter: 50 W 12.5 W
70 Centimeter: 20 W 5 W
SSB: Balanced Modulator, AM: Early Stage (Low Level), FM: Variable Reactance
±5 kHz (FM-N: ±2.5 kHz)
–50 dB (1.8-29.7 MHz)
–60 dB (50/144/430 MHz)
>40 dB
>50 dB
400 Hz-2600 Hz (–6 dB)
200-10k Ohms (Nominal: 600 Ohms)

3
Receiver
Circuit Type:
Intermediate Frequencies:
Sensitivity:
Squelch Sensitivity:
Image Rejection:
IF Rejection:
Selectivity (–6/–60 dB):
AF Output:
AF Output Impedance:
Double-Conversion Superheterodyne (SSB/CW/AM/FM)
Superheterodyne (WFM)
1st: 68.33 MHz (SSB/CW/AM/FM); 10.7 MHz (WFM)
2nd: 455 kHz
SSB/CW AM FM
100 kHz-1.8 MHz – 32 μV–
1.8 MHz-28 MHz 0.2 μV2μV–
28 MHz-30 MHz 0.2 μV2μV 0.5 μV
50 MHz-54 MHz 0.125 μV1μV 0.2 μV
144/430 MHz 0.125 μV – 0.2 μV
(SSB/CW/AM = 10 dB S/N, FM = 12 dB SINAD)
SSB/CW/AM FM
100 kHz-1.8 MHz – –
1.8 MHz-28 MHz 2.5 μV–
28 MHz-30 MHz 2.5 μV 0.32 μV
50 MHz-54 MHz 1 μV 0.16 μV
144/430 MHz 0.5 μV 0.16 μV
HF/50 MHz: 70 dB, 144/430 MHz: 60 dB
60 dB
SSB/CW: 2.2 kHz/4.5 kHz
AM: 6 kHz/20 kHz
FM: 15 kHz/30 kHz
FM-N: 9 kHz/25 kHz
SSB (optional YF-122S installed): 2.3 kHz/4.7 kHz (–66 dB)
CW (option YF-122C installed): 500 Hz/2.0 kHz
2.5 W (@4 Ohms, 10% THD or less)
4-16 Ohms
Specifications are subject to change without notice, and are guaranteed within the amateur bands
Specifications

4
Exploded View & Miscellaneous Parts
RA0572200 (Lot. 25~)
RA0413400 (Lot. 1~)
SP HOLDER
RA0398000
SP NET (VND-100)
RA041230A (Lot. 5~)
RA0412300 (Lot. 1~)
PANEL ASSY
RA0412100
ROTARY KNOB (AF)
RA0412000
ROTARY KNOB (SQL)
RA0411800
ROTARY KNOB (VFO)
RA0411900
ROTARY KNOB (CLAR)
RA041510A
MAIN KNOB ASSY
PANEL Unit
M2090029
FAN (x 2 pcs)
M4090165 (Lot. 25~)
M4090150 (Lot. 1~)
SPEAKER
MIC Unit
VR Unit
MAIN Unit
BATT-CONN Unit
RA041290A
HOLDER
(BATT SW)
RA0413100
SUPPORT (x 2 pcs)
RA0411700
HOLDER PLATE (MIC)
RA0420000
SPONGE RUBBER
RA0398100
SPONGE RUBBER (SP)
RA0398200
STAND
RA0397800
BOTTOM CASE (A)
RA0412600
HOLDER HANDLE (x 2 pcs)
RA0412500
HANDLE
RA0397900
SHIELD (CENTER)
R6054387B
SPECIAL NUT
S5000057
LEAD CLAMPER (x 2 pcs)
S4000054 (Lot.91~)
S4000043 (Lot.1~)
CASE LEG (x 2 pcs)
S4000056 (Lot.89~)
S4000047 (Lot.1~)
CASE LEG FF-003
(w/o RIVET) x 4 pcs
RA039770A (Lot.124~)
RA0397700 (Lot.1~)
TOP CASE
R3100700A
FOOT (x 2 pcs)
RA0411600
RUBBER RING S4000043
CASE LEG FF-003
No. VXSTD P/N DISCRIPTION QTY.
1U24306001 TAPTITE SCREW M3X6 4
2U9900144 BINDING HEAD SCREW M3X7B 4
3U24308002 TAPTITE SCREW M3X8NI 4
4U31306007 OVAL HEAD SCREW M3X6B 8
5U31205007 OVAL HEAD SCREW M2.6X5B 2
6U20408007 BINDING HEAD SCREW M4X8B 2
7U24206001 TAPTITE SCREW M2.6X6 10
8U02208002 PAN HEAD SCREW SM2.6X8NI 2
9U24208001 TAPTITE SCREW M2.6X8 2
10 U02308002 SEMS SCREW SM3X8NI 6
11 U20306002 BINDING HEAD SCREW M3X6NI 2
12 U00330007 PAN HEAD SCREW M3X30B 8
13 U9900076 HEX HEAD BOLT HSM4X16NI 1
14 U72004002 TOOTHED LOCK WASHER OW4NI 1
15 U20420007 BINDING HEAD SCREW M4X20B 2
16 U23206001 TAPTITE SCREW M2.6X6 5
17 U23105001 TAPTITE SCREW M2X5 2
18 U9900063 TAPTITE SCREW 2X3.3NI 1
RA0423600
SPONGE RUBBER (LED)
S3000022
WIRE BIND PLT-1M BK-1
RA0412200
SUPONGE RUBBER (MIC)
R6144801
NUT
R3135000A
WASHER
R0136380
COIL SPRING
RA0411200
DOUBLE FACE (LCD)
RA0411300
LCD HOLDER
RA0423800
REFLECTOR SHEET
LCD
RA0411400
LIGHT GUIDE (LCD)
RA042370A (Lot. 8~)
RA0423700 (Lot. 1~)
DIFFUSER SHEET
RA0572100 (Lot. 25~)
RA0283900 (Lot. 1~)
SPONG RUBBER
RA0416500
HEATSINK PLATE
RA0639400 (Lot.41~)
RA039760B (Lot.4~)
RA039760A (Lot.1~)
CHASSIS (MAIN)
RA0452600
PACKING PAD (SHIELD)
RA0460300
SHIELD SHEET (DSP)
4
4
4
4
4
4
4
4
5
5
4
4
4
4
4
4
2
2
2
2
3
3
33
15
15
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
10
1
1
1
1
1
1
1
1
1
1
1
1
6
6
11
12 12
12 12
16
16
16
16
16
17
17
17
18
13
14
8
8
9
9
9
9
N2090071
ROCKER SWITCH
RA0455700
BLIND SHEET
T9207008
CW-ASSY
T9206999
FW-ASSY
T9207004
CW-ASSY
Q9000709A
ROTARY ENCODER
P1090352
CONNECTOR
P1090352 (USA)
P1090547
(AUS, EXP, FRA)
CONNECTOR
RA0443700
PACKING PAD (SHIELD)
RA0446300
PACKING SHEET
(GAP PAD)
RA0471400 (Lot. 21~)
RA0460100 (Lot. 1~) (x 2 pcs)
SPONGE RUBBER

Block Diagram
5

Interconnection Diagram
6

7
Circuit Description
The FT-897 internal assembly consists of the MAIN
Unit, PLL Unit, PA Unit, Panel Unit, BATT-CONN Unit,
REF Unit, MIC Unit, and the VR Unit.
Receive Signal Circuitry
RF Stages
Signals between 0.1 and 56 MHz received at the an-
tenna terminal pass through a low-pass filter, selected ac-
cording to the receiving frequency, then pass to another
low-pass filter, to remove unwanted out-of-band signals.
The filtered receiving signal passes, through one of the
following circuits, to the 1st Mixer Q1128 (SPM5001):
(1) an attenuator network (-10dB) which consists of resis-
tors R1101, R1108, R1109; (2) a “through” circuit en-
abled via diodes D1011 and D1012 (both DAP236U); or
(3) RF amplifier Q1025 (2SC5374).
Received 430 MHz signals, after passing through a
high-pass filter composed of L3052, L3059, C3209,
C3210, C3219, C3223, and C3319, are passed through
low-pass filter composed of L3042, L3045, C3165, C3168,
C3177, C3180, C3192, and C3196, and through a direc-
tional coupler, to the UHF T/R switch circuit composed
of diode switch D3015/D3021 (both UM9957F), D3022,
and D3066 (both HSU277). Then the signals are fed to
the 1st Mixer Q1128 via the RF-AMP, Q1026 (2SK2685.)
Received 145 MHz signals, after passing through a
high-pass filter composed of L3060, L3050, L3047,
C3200, C3203, C3220, and C3221, are passed through a
low-pass filter composed of L3043, L3044, C3167, C3169,
C3176, C3179, and C3191, and a directional coupler, to
the VHF T/R switch circuit, composed of diode switch
D3018/D3020 (both UM9957F). Then the signals are fed
to 1st Mixer Q1128 via the RF-AMP, Q1024
(BB304CDW).
Received 76-108 MHz signals, after passing through a
high-pass filter composed of L3060, L3050, L3047,
C3200, C3203, C3220, and C3221, are passed through
low-pass filter composed of L3043, L3044, C3167, C3169,
C3176, C3179, and C3191, and a directional coupler, to
the T/R switch circuit, composed of diode switch D3018/
D3020 (both UM9957F). Then it is fed to the Wide-FM
IF IC Q1058 (CXA1611N) on the MAIN Unit.
1st Mixer Circuit/1st IF Circuit
The 1st mixer on the MAIN Unit consists of quad MOS
FET Q1128 (SPN5001), where the receiving signal is
mixed with the 1st local signal (68.430-538.330 MHz)
from the PLL Unit. The resulting output signal (68.33
MHz) passes through monolithic crystal filter (MCF)
XF1001 (MF68Q, BW: ±6.0 kHz) to obtain the 1st IF
signal with a center frequency of 68.33 MHz. The IF sig-
nal passes through the 1st IF amplifier Q1073
(BB305CEW) to the 2nd Mixer, Q1083 and Q1084 (both
2SK302Y).
2nd Mixer Circuit/2nd IF Circuit
The 2nd Mixer consists of FETs Q1083 and Q1084
(both 2SK302Y) on the MAIN Unit, where the 1st IF
signal is mixed with the 2nd local signal (67.875 MHz).
The resulting output signal (455 kHz) is applied to the
2nd IF filter which is matched to the receiving mode: ei-
ther CF1004, CF1005 or an optional mechanical filter.
Noise Blanker Circuit
A portion of the 2nd IF signal is amplified by Noise
Blanker Amplifiers Q1075 and Q1079 (both
BB305CEW) on the MAIN Unit, and then rectified by
D1064 (1SS372). This output is applied to the Noise
Blanker Controllers, Q1093 (2SC4154E) and Q1099
(2SA1602A), which a yield Blanking signal according
to the timing of the incoming noise pulses. Then Blanking
signal controls the Noise Blanker Gate D1066 (BAS316),
to slice out the impulse noise from the signal.
AGC Circuit
The AGC circuit consists of D1061 (1SS372), tran-
sistor Q1090 (2SC4154E), and associated parts on the
MAIN Unit. Output from the AGC circuit is fed back to
the IF AGC circuit that controls the gain of the IF ampli-
fier FETs.
FM IF Circuit/FM Demodulator Circuit
On FM, the 2nd IF signal passes through the buffer
amplifier Q1094 (2SC4154E) and 2nd IF filters (CF1002
and CF1003) to the FM IF IC Q1080 (TA31135FN)
which contains a mixer, limiter amplifier, filter amplifier,
squelch trigger, and demodulator. The demodulated au-
dio signal at Q1080 passes through a low-pass filter (R1339
and C1282) and a de-emphasis circuit (R1303 and C1345),
then proceeds to the Audio Amplifier Circuit.
The squelch circuit selectively amplifies the noise com-
ponent of the demodulator output using the filter amplifi-
er inside the FM IF IC and an active band-pass filter con-
sisting of an externally attached resistor and capacitor.
Signal detection is performed by D1057 (DA221).

8
Circuit Description
SSB/CW Demodulator Circuit
The 2nd IF SSB/CW signal passes through buffer am-
plifiers Q1088 and Q1081 (both BB305CEW) to the SSB
balanced demodulator Q1071 (SA602AD) which produc-
es audio by applying the carrier signal from the CAR-
DDS IC Q1062 (AD9835BRU). The demodulated audio
signal is stripped of high-frequency components by an
active low-pass filter, op-amp IC Q1120 (NJM2902V),
then is applied to the Audio Amplifier Circuit.
AM Demodulator Circuit
The 2nd IF AM signal passes through buffer amplifi-
ers Q1088 and Q1081 (both BB305CEW) to the AM de-
modulator D1055 (BAS316), yielding demodulated au-
dio signal which is applied to the Audio Amplifier Cir-
cuit.
Audio Amplifier Circuit
The demodulated audio signal is passed through AF
pre-amplifier Q1119 (NJM2902V) and electronic volume
control IC Q1087 (M62364EP) to the AF Amplifier IC
Q1105 (TDA2003H) which drives the internal or exter-
nal speaker to a maximum output of approximately 2.5
Watts.
Transmit Signal Circuitry
Microphone Amplifier Circuit
The audio signal from microphone jack on the MIC
Unit is amplified by audio amplifier Q1109 (2SC4154E)
on the MAIN Unit, and then is applied to electronic vol-
ume control IC Q1087 (M62364EP), the level of which
is set via the User Menu.
SSB Modulator Circuit
The output (audio signal) from the electronic volume
control IC is passed through audio amplifier Q1118
(NJM2902V) to the balanced modulator IC Q1071
(SA602AD) which produces a Double Sideband (DSB)
signal by applying the carrier signal from the CAR-DDS
IC Q1062 (AD9835BRU). The DSB modulated signal
(455 kHz) is fed to ceramic filter CF1004 (or the optional
mechanical filter) which strips residual carrier and the
undesired sideband, resulting in a Single Sideband (SSB)
signal.
AM Modulator Circuit
As in the SSB modulator circuit, a carrier signal ap-
propriate to the transmitting mode (AM) from the CAR-
DDS Unit and an audio signal from the microphone are
applied to balanced modulator IC Q1071 (SA602AD).
The control signal from Mode Switch IC Q1003
(BU4094BCFV) causes a voltage (“AM 5V”) to be sent
from transistor Q1058 (2SC4154E). This voltage is ap-
plied to IC Q1071 via D1059 (BAS316), causing the bal-
anced modulator to lose balance. The restored carrier sig-
nal and modulated signal are then fed to the TX mixer via
ceramic filter CF1004.
FM Modulator Circuit
The output (audio signal) from the electronic volume
control IC is passed through the pre-emphasis circuit which
consists capacitor C1492 and resistors R1493 and R1477,
and Instantaneous Deviation Control Q1119
(NJM2902V), to the splatter filter which consists Q1119,
capacitor C1430, and resistors R1358 and R1384. The fil-
tered audio signal is applied to the FM modulator circuit,
which produces the FM signal. The FM modulator circuit
uses a voltage controlled crystal oscillator (VCXO) which
consists Q1055 (2SC4400), D1046 (1SV229), and
X1002 (22.7767 MHz).
1st IF Circuit/1st Mixer Circuit
The modulated SSB/AM signal is applied to the 2nd
Mixer Q1082 (SA602AD), which produces the 68.33
MHz 2nd IF signal utilizing the 2nd local signal (68.875
MHz). The 2nd IF signal is fed through the 2nd IF filter
XF1004 which strips away unwanted mixer products, then
passes through the 2nd IF amplifier Q1061 (BB304CDW)
to the double balanced mixer D1034 (HSB88WS) which
produces the transmit frequency by applying the local sig-
nal (68.430-538.330 MHz) from the PLL Unit. The trans-
mit signal is passed through a low-pass filter (1.8-29.7
MHz), a high-pass filter (50-54 MHz), a band-pass filter
(144-146 MHz), or a band-pass filter (430-450 MHz)
which consists of various inductors and capacitors. The
filtered transmit signal is amplified by Q1017 (2SC3357),
Q1011 (2SK2596), Q1006/Q1007 (2SK2973), and
Q1001/1002 (2SK2975), and is applied to the Power
Amplifier: Q3017/Q3018 (2SC5125: HF/50 MHz) or
Q3016 (2SC3102: 144/430 MHz).

9
Circuit Description
ALC Circuit
The output from the directional coupler is routed from
connector J3002 and applied to the ALC circuit via con-
nector J1001 on the MAIN Unit.
The ALC circuit consists of an op-amp circuit for am-
plifying the forward and reflected voltage, a time-constant
ALC amplifier, and a transmit signal control circuit on
the MAIN Unit. The forward voltage from connector J1001
on the MAIN Unit is added with a DC control voltage and
is then applied to op-amp IC Q1111 (NJM2902V). The
reflected voltage is added with a DC control voltage and
is then applied to op-amp IC Q1112 (NJM2904V). In the
event of high SWR conditions (SWR 3:1 or more), trans-
mitter output is reduced, thus protecting the PA Unit from
potential damage; a “HI SWR” indication also appears on
the LCD, alerting the user to an antenna problem.
The ALC amplifier magnifies the forward wave out-
put via transistor Q1009 (2SC4154). This output then
passes through a fast-attack, slow-delay RC time-constant
circuit, which consists of R1051 and C1051, for input to
the TX signal control circuit on the MAIN Unit. The TX
control circuit adjusts the IF amplifier gain via gate 2 of
FET Q1061 (BB304CDW) of the 2nd IF amplifier cir-
cuit, to prevent the TX output from exceeding the preset
level.
PLL Frequency Synthesizer
The PLL Frequency Synthesizer consists mainly of the
master reference oscillator circuit, 2nd local oscillator cir-
cuit, PLL IC, and CAR-DDS and REF-DDS units, which
digitally synthesize carrier outputs, plus a PLL circuit
which contains a voltage controlled oscillator (VCO).
Master Reference Oscillator Circuit
The master reference oscillator uses a Crystal Oscilla-
tor (oscillation frequency: 22.625 MHz) composed of
Q5001 (2SC4400-4), X5001, TC5001, C5001, and
R5005. The reference oscillator signal passes through a
buffer amplifier Q5002 (2SC4400-4), and is then fed to
the MAIN Unit via J5002.
CAR-DDS Circuit REF-DDS Circuit
DDS ICs Q1062 (AD9835BRU), and Q2016
(AD9850BAS) each contain a shift register, selector,
phase accumulator, and ROM. The reference oscillation
frequency (22.625 MHz) that is delivered to each of the
DDS Units is applied to each DDS IC after amplification
by transistors Q1043, Q1046, Q1048, and Q1059 (all
2SC4400-3).
The DDS outputs contain digital amplitude data corre-
sponding to serial frequency data from CPU IC Q1049.
The DDS frequency range is 453.5 ~ 466.5 kHz (center
frequency = 455.0 kHz) for the CAR-DDS, and 7.2-8.0
MHz for the REF DDS.
1st Local Oscillator Circuit
VCO output is buffer-amplified by Q2011 (2SC5374)
and Q2022 (UPC2713T), and passes through a low-pass
filter. It is then fed to the TX/RX frequency mixer circuit-
ry of the MAIN Unit.
2nd Local Oscillator Circuit
The 2nd LO circuit is a Hartley-type overtone oscilla-
tor circuit (frequency: 67.875 MHz) composed of Q1052
(2SC4400-3) on the MAIN Unit.
PLL Circuit
The PLL circuit is a frequency mixing type composed
of a VCO, mixer, PLL IC, and loop filter. The VCO con-
sists of five circuits (VCO1, VCO2, VCO3, VCO4 and
VCO5), with a frequency range of 68.430-538.330 MHz
divided into five bands, allocated to the five VCO cir-
cuits. VCO1-VCO5 consist mainly of FETs Q2004,
Q2005, and Q2006 (all 2SK210GR); transistors Q2009
and Q2010 (both 2SC5374); diodes D2001-D2006 (all
HVC362), D2007 (1SV282), D2008 (1SV281), and
D2009 (1SV286); and coils T2001-T2003, L2010, and
L2011.
The VCO switching signal from the connector J2002
is used to drive switching transistors Q2001, Q2002,
Q2003, Q2012, and Q2013 (all DTC124EU) to switch
the source terminal of the oscillator FET.
The 68.430-538.330 MHz VCO signal is buffer-am-
plified by Q2023 (UPC1688G), and fed to PLL IC Q2021
(FQ7925.)
The REF-DDS signal (7.2-8.0 MHz) is fed to PLL IC
Q2021 after it passes through a low-pass filter composed
of C2064, C2067, C2069, C2071, C2075, L2014, L2015,
and L2016, and is fed to PLL IC Q2021 (FQ7925.) The
phase of the reference frequency and that of the signal
input to the PLL IC are compared, and a signal whose
pulse corresponds to the phase difference is produced.

10
Alignment
Introduction and Precautions
The following procedures cover adjustments that are
not normally required once the transceiver has left the fac-
tory. However, if damage occurs and some parts subse-
quently be 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 replaced.
We recommend that servicing be performed by autho-
rized Vertex Standard service technicians, experienced with
the circuitry and fully equipped for repair and alignment.
If a fault is suspected, contact the selling dealer for in-
structions regarding repair. Authorized Vertex Standard
service technicians have the latest configuration informa-
tion, and realign all circuits and make complete perfor-
mance checks to ensure compliance with factory specifi-
cations after repairs.
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 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 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 the need for realignment determined
to be absolutely necessary.
The following test equipment (and thorough familiar-
ity with its correct use) is necessary for complete realign-
ment. Most steps do not require all of the equipment listed,
but the interactions of some adjustments may require that
more complex adjustments be performed in a sequence.
Do not attempt to perform only a single step unless it is
clearly isolated electrically from all other steps. Rather,
have all test equipment ready before beginning, and fol-
low all of the steps in a section in the order they are pre-
sented.
Required Test Equipment
PDigital DC Voltmeter (high-Z, 1 M-Ohm/V)
PDC Ammeter
PRF Millivoltmeter
PAC Voltmeter
PRF Standard Signal Generator w/calibrated output and
dB scale, 0 dBμ= 0.5μV
PSignal Generator with calibrated output
PSpectrum Analyzer good to at least 1 GHz.
PFrequency Counter
P50-Ohm Dummy Load (200 watts)
P100-Ohm Dummy Load (200 watts)
P150-Ohm Dummy Load (200 watts)
PIn-Line Wattmeter (200 watts, 50-Ohm)
PLinear Detector
PRF Coupler
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 other-
wise. Correct alignment is not possible with an antenna.
After completing one step, read the following step to
determine whether the same test equipment will be re-
quired. If not, remove the test equipment (except dummy
load and wattmeter, 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
time to come to room temperature before alignment.
Whenever possible, alignments should be made with
oscillator 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= 0.5 μV (closed circuit).

11
Local Oscillator Adjustment (FT-897 Only)
Reference Frequency Adjustment
UConnect the frequency counter to TP1032
UAdjust the trimmer capacitor (TC5001) for 67.875000
MHz (± 5 Hz) on the frequency counter.
UConnect an RF millivoltmeter or an oscilloscope to pin
2 of J5002 (TP1032) and confirm that the output level
is 115 mv (± 30 mV) rms or 315 mv (± 80mV) p-p.
3ad Local Adjustment
UConnect an RF millivoltmeter or an oscilloscope to
TP1037.
UKey the transceiver on CW, and adjust T1025 for maxi-
mum indication on the RF millivolt-meter.
UConfirm that the indicated voltage is 100 mv (± 30
mV) rms or 300 mv (± 100mV) p-p.
PLL Adjustment
VCO VCV Adjustment
UConnect the DC voltmeter to pin 6 of J2002 (TP1028)
and, referring to the table below, tune the transformer/
inductor on each frequency listed. Then confirm that
the correct voltage is present, or adjust the listed com-
ponent for the required voltage.
Tune to : Adjust / Confirm For
13.895 MHz Adjust T2001 6.0V ±0.1V
76.000 MHz Confirm At least 0.9V
32.995 MHz Adjust T2002 6.0V ±0.1V
13.900 MHz Confirm At least 0.9V
55.995 MHz Adjust T2003 6.0V ±0.1V
88.000 MHz Confirm At least 0.9V
163.995 MHz Adjust L2010 5.5V ±0.5V
118.000 MHz Confirm At least 0.8V
469.995 MHz Adjust L2011 5.5V ±0.5V
420.000 MHz Confirm At least 0.8V
1st Local Output Level
UConnect the RF millivoltmeter to pin 11 of J2002
(TP1029), and set the transceiver to 28.000 MHz.
UConfirm that the RF level is at least +3 dBm or 300
mV rms.
TP1032
TP1037
T1025
TP1028
TC5001
TP1029
Alignment

12
Alignment
PLL Unlock
UConnect the DC voltmeter to pin 1 of J2002 (TP1027).
UDisconnect the reference oscillator input by unplug-
ging the cable; confirm that the voltmeter shows less
than 0.5 V and that “UNLOCKUNLOCK
UNLOCKUNLOCK
UNLOCK” is displayed on the LCD.
URe-connect the reference input, and confirm that the
voltmeter shows at least 3.5 V and tat the LCD returns
to its normal display.
Idling Current Adjustment
Before alignment, set the mode to CW and tune the
transceiver to 1.800 MHz. Nothing should be connected
to the CW Key Jack. Switch off S1001.
Pre-Driver Stage Idling Current
UConnect the ammeter between TP1019 and TP1020.
UPress the PTT, and adjust VR1004 for an indication of
30 mA (±5 mA) on the ammeter.
Driver Stage Idling Current
UConnect the ammeter between TP1017 and TP1018.
UPress the PTT and adjust VR1003 for an indication of
60 mA (±5mA) on the ammeter.
Exciter Stage Idling Current
UTerminate J1004 into a ammeter.
UTurn both VR1001 and VR1002 fully counterclock-
wise.
UPress the PTT and adjust VR1002 for an indication of
50mA (±10 mA) on the ammeter.
UPress the PTT and adjust VR1001 for an indication of
100mA (±10 mA) on the ammeter.
URe-connect J1004 and switch on S1001.
TX IF Adjustment
SSB/CW TX IF Adjustment
UTune the frequency to the 14 MHz band. Connect the
RF millivoltmeter to TP1033, and terminate J1002
into a 50-Ohm dummy load.
UInject a 1 kHz tone at 1 mV level to the MIC jack.
TP1027
S1001 TP1017
TP1018
TP1019
TP1020
VR1003
VR1004
VR1002
VR1001
J1004
TP1033
T1033
J1002
T1014
T1021
T1023
L1049
VR1005
T1013 T1012 T1011
J1003
UKey the transmitter, and adjust T1033, T1023, T1021
for maximum indication on the RF millivoltmeter.
GND
PTT
MICMIC GND

13
Alignment
FM TX IF Adjustment
UTune the frequency to the 28 MHz band. Connect the
RF millivoltmeter to TP1033 and leave J1002 termi-
nated into a 50-Ohm dummy load.
UKey the transmitter in the FM mode, and adjust T1014
alternately for maximum indication on the RF
millivoltmeter.
UConnect the frequency counter to TP1033.
UKey the transmitter in the FM mode without micro-
phone input. Adjust L1049 for a reading of 68.3300
MHz (±100 Hz).
Carrier Balance Adjustment
UTune the frequency to the 14 MHz band. Terminate
J1002 into a 50-Ohm dummy load and connect a spec-
trum analyzer or a RF millivoltmeter at this point.
UKey the transmitter in the USB mode without micro-
phone input. Adjust VR1005 for maxi-mum carrier
suppression on the spectrum analyzer or for minimum
indication on the RF millivoltmeter.
VHF TX BPF Adjustment
USet the frequency to 145.995 MHz. Connect the spec-
trum analyzer to J1002, which should be terminated
into a 50-Ohm dummy load.
UInject a 1 kHz tone at 1 mV level to the MIC jack.
UKey the transceiver in the USB mode, and adjust
T1013, T1012, and T1011 alternately for maximum
indication on spectrum analyzer.
UHF TX BPF Adjustment
USet the frequency to 430.000 MHz. Connect the spec-
trum analyzer to J1002, which should be terminated
into a 50-Ohm dummy load.
UInject a 1 kHz tone at 1 mV level to the MIC jack.
UKey the transceiver in the USB mode, and adjust
TC1004, TC1003 and TC1002 alternately for maxi-
mum indication on the spectrum analyzer.
T1019T1018
T1004
T1005
T1008
TP1043
TP1044
T1027
T1028
TC1003 TC1002
TC1001
T1036
T1037
T1030
T1026
T1024
T1035
T1034
T1029
T1010
T1009
T1006
TC1005
T1031

14
Alignment
RX Adjustment
The PA Unit must be connected during RX adjustments.
The signal generator should not be connected to J1003
directly because DC voltage is present there.
RX IF Adjustment
Connect the signal generator to the antenna connector,
and the SINAD meter to the speaker jack.
SSB IF Adjustment
UTune the transceiver to 51.995 MHz. Inject an RF sig-
nal from a signal generator at 0 dBμoutput.
UAdjust T1018, T1019, T1024, T1026, T1028,
T1030, T1035, T1036, T1037, T1034 and T1029
alternately for maximum indication on the DC volt-
meter. Several passes may be necessary, as the adjust-
ments inter-react to some degree.
FM IF Adjustment
UTune the transceiver to 51.995 MHz. Inject an RF sig-
nal from a signal generator at +5 dBμoutput, with 1
kHz AF FM modulation at ±3.5 kHz deviation.
UAdjust T1024, T1026, and T1028 alternately for
maximum level on the S-meter.
Air-Band Reception Adjustment
UConnect the DC voltmeter to TP1044.
UTune the transceiver to 128.00 MHz in the AM mode.
Inject an RF signal from the signal generator at 20 dBμ
output, with 30% AM modulation at 400 Hz audio fre-
quency.
UAdjust T1005 and T1008 for minimum indication on
the DC voltmeter.
VHF Band Alignment
UConnect the DC voltmeter to TP1044.
UTune the transceiver to 145.995 MHz in the CW mode.
Inject an RF signal from a signal generator at 20 dBμ
output.
UAdjust T1006, T1009 and T1010 alternately for mini-
mum indication on the DC voltmeter.
UHF Band Alignment
UConnect the DC voltmeter to TP1044.
UTune the transceiver to 439.995 MHz in the CW mode.
Inject a RF signal from the signal generator at 20 dBμ
output.
UAdjust TC1001 for minimum indication on the DC
voltmeter.
W-FM Reception Adjustment
UConnect the SINAD meter to the speaker jack.
UTune the transceiver to 88.00 MHz. Inject a RF signal
from the signal generator at 30dBu output, with ±22.5
kHz deviation FM modulation of a 1 kHz audio signal.
UAdjust TC1005 for the best SINAD sensitivity. Then
reduce the output level of the signal generator to where
the signal just begins to sound slightly “noisy,” and
adjust TC1005 again for best SINAD.
Image Rejection Trap Adjustment
UConnect the AF millivoltmeter to the speaker jack.
UTune the transceiver to 51.995 MHz in the FM mode.
Inject an RF signal from the signal generator at 68.330
MHz, with 70 dBμoutput.
UAdjust T1004 for minimum indication on the AF
millivoltmeter. Then increase the output level of the
signal generator slightly and adjust T1004 again, so
as to ensure maximum notching of the image.
Noise Blanker Adjustment
UConnect the DC voltmeter to TP1043. Tune the trans-
ceiver to 51.995 MHz and inject an RF signal from the
signal generator at 20 dBμoutput.
UActivate the noise blanker, and adjust T1027 and
T1031 for minimum indication on the DC voltmeter
connected to TP1043.

15
Alignment
Power Amplifier Adjustment (Lot. 1 ~ 68)
HF/50 MHz Idling Current Adjustment
UTune the transceiver to any HF band, or to the 50 MHz
band.
UDisconnect the jumper between TP3021 and TP3022.
UConnect the ammeter between TP3021 and TP3022.
UTurn VR3002 fully counterclockwise.
UPress the PTT, and adjust VR3002 for an indication of
100 mA (±10 mA) on the ammeter.
UDisconnect the ammeter, and re-connect TP3021 and
TP3022.
V/UHF Idling Current Adjustment
UTune the transceiver to the 430 MHz band.
UConnect the ammeter between TP3021 and TP3022.
UConnect the ammeter between TP3021 and TP3022.
UTurn VR3001 fully counterclockwise.
UPress the PTT, and adjust VR3001 for an indication of
300 mA (±10 mA) on the ammeter.
UDisconnect the ammeter, and re-connect TP3021 and
TP3022.
Directional Coupler Balance Adjustment
UTerminate the antenna jack into a 50-Ohm dummy load.
Set the mode to CW, and connect the DC voltmeter to
TP3001.
UTune the transceiver to the 28 MHz band, and key the
transceiver.
UAdjust TC3002 for minimum indication on the DC
voltmeter.
UTune the transceiver to 439.995 MHz, and key the trans-
ceiver.
UAdjust VR3003 for minimum indication on the DC
voltmeter.
ULeave the transceiver on 439.995 MHz band and key
the transceiver.
UAdjust TC3001 for maximum indication on the RF
Power meter.
TP3021
TP3022
VR3003
VR3002 VR3001
TP3001
TC3002
TC3001
PA Unit (Lot. 1 ~ 68)Alignment Points

16
Alignment
Power Amplifier Adjustment (Lot. 69 ~)
HF/50 MHz Idling Current Adjustment
UTune the transceiver to any HF band, or to the 50 MHz
band.
UDisconnect the wire jumper from TP3021 and TP3022
on the PA Unit, then connect the ammeter between
TP3021 (+) and TP3022 (–).
UTurn VR3001 fully counterclockwise.
UPress the PTT, and adjust VR3001 for an indication
of 600 mA (±10 mA) on the ammeter.
UDisconnect the ammeter, and re-connect TP3021 and
TP3022 using the wire jumper.
V/UHF Idling Current Adjustment
UTune the transceiver to the 430 MHz band.
UDisconnect the wire jumper from TP3021 and TP3022
on the PA Unit, then connect the ammeter between
TP3021 (+) and TP3022 (–).
UTurn VR3002 fully counterclockwise.
UPress the PTT, and adjust VR3002 for an indication
of 1000 mA (±50 mA) on the ammeter.
UDisconnect the ammeter, and re-connect TP3021 and
TP3022 using the wire jumper.
Directional Coupler Balance Adjustment
UTerminate the antenna jack into a 50-Ohm dummy load.
Set the mode to CW, and connect the DC voltmeter to
TP3001.
UTune the transceiver to the 28 MHz band, and key the
transceiver.
UAdjust TC3002 for minimum indication on the DC
voltmeter.
UTune the transceiver to 439.995 MHz, and key the trans-
ceiver.
UAdjust VR3003 for minimum indication on the DC
voltmeter.
ULeave the transceiver on 439.995 MHz band and key
the transceiver.
UAdjust TC3001 for maximum indication on the RF
Power meter.
TP3021
TP3022
VR3003
VR3002 VR3001
TP3001
TC3002
TC3001
PA Unit (Lot. 69 ~)Alignment Points

17
Software Menu Alignment
The antenna connector should be connected to a dummy
load (in cases where transmission is involved) or the signal
generator (in the case of reception). General alignment con-
ditions are as follows unless otherwise noted.
AF-gain knob: Center
RF-gain knob: Fully clockwise
SQL: Fully counterclockwise
ATT/IPO/CTCSS/DCS: Off
Output power: High
AGC: Auto
Break-in:On
CW Keyer: Off
VOX: Off
Press and hold in the Multi Function Keys [A], [B],
[C] simultaneously and turn on the transceiver while hold-
ing them in; the alignment menu will then be activated (you
will hear a “diddle-diddle-diddle” opening tone sequence
to confirm that the alignment menu has been activated).
In the alignment procedures, each alignment parameter
is selected by rotating the MAIN dial. Each Alignment item
is selected by rotating the MEM/VFO CH knob.
To store the alignment parameters when you are satis-
fied with the adjustment, press the [MENU] key for longer
than a half second.
VR4001 JP4007
Alignment
Battery Indicator Alignment
UConnect a DC power supply to pin 4 of JP4007, and
connect pin 6 to the ground lead from the power sup-
ply.
UAdjust the power supply voltage exactly to 11.0 V.
UAdjust VR4001 until you see an orange blink on the
BATT-A indicator.

18
Alignment
RX Gain Adjustment
USelect the CW mode. Tune the transceiver to the 1.8
MHz band. Select “HF1RXGHF1RXG
HF1RXGHF1RXG
HF1RXG” in the menu by rotating
the MEM/VFO CH knob, if necessary. Inject an RF
signal from the signal generator at 9 dBμoutput.
UAdjust the “HF1RXGHF1RXG
HF1RXGHF1RXG
HF1RXG” parameter by rotating the main
dial to the point where the first dot of the S-meter (S1)
appears.
UThe other RX gain adjustments (see the chart below)
should be performed in the same way. The output lev-
els of the signal generator at each frequency are shown
below.
Menu Frequency Output Level of SG
01: HF1RXG01: HF1RXG
01: HF1RXG01: HF1RXG
01: HF1RXG 1.8 MHz Band 9 dBu
02: HF2RXG02: HF2RXG
02: HF2RXG02: HF2RXG
02: HF2RXG 7 MHz Band 9 dBu
03: HF#RXG03: HF#RXG
03: HF#RXG03: HF#RXG
03: HF#RXG 21 MHz Band 6 dBu
04: 50MRXG04: 50MRXG
04: 50MRXG04: 50MRXG
04: 50MRXG 50 MHz Band 0 dBu
05: VHFRXG05: VHFRXG
05: VHFRXG05: VHFRXG
05: VHFRXG 144 MHz Band 0 dBu
06: UFFRXG06: UFFRXG
06: UFFRXG06: UFFRXG
06: UFFRXG 430 MHz Band 0 dBu
SSB S-Meter Adjustment
UTune the transceiver to the 21 MHz band in the CW
mode. Inject an RF signal from the signal generator at
36 dBμoutput.
USelect menu item “07: SSB-S907: SSB-S9
07: SSB-S907: SSB-S9
07: SSB-S9” and press the [A]
key to set this parameter.
UTune the transceiver to the 21 MHz band in the CW
mode. Inject an RF signal from the signal generator at
86 dBμoutput.
USelect menu item “08: SSB-FS08: SSB-FS
08: SSB-FS08: SSB-FS
08: SSB-FS” and press the [A] key
to set this parameter.
FM S-Meter Adjustment
UTune the transceiver to the 144 MHz band in the FM
mode. Inject an RF signal from the signal generator at
0 dBμoutput, with ±3.5 kHz deviation FM Modula-
tion of a 1 kHz tone.
USelect menu item “09: FM-S109: FM-S1
09: FM-S109: FM-S1
09: FM-S1” and press the [A] key
to set this parameter.
UIncrease the output level of the signal generator up to
25 dBμ. Select menu item “10: FM-FS10: FM-FS
10: FM-FS10: FM-FS
10: FM-FS” and press [A]
key to set this parameter.
FM Center Meter Adjustment
UTune the transceiver to the 144 MHz band in the FM
mode. Inject an RF signal from the signal generator at
10 dBμoutput, with ±3.5 kHz deviation FM Modula-
tion of a 1 kHz tone.
USet the frequency of the signal generator 3 kHz below
the receiving frequency of the transceiver. Select menu
item “11: DISC-L11: DISC-L
11: DISC-L11: DISC-L
11: DISC-L” and press the [A] key to set this
parameter.
USet the frequency of the signal generator 3 kHz above
the receiving frequency of the trans-ceiver. Select menu
item “12: DISC-H12: DISC-H
12: DISC-H12: DISC-H
12: DISC-H” and press the [A] key to set this
parameter.
FM Squelch Adjustment
UTune the transceiver to the 144 MHz band in the FM
mode. Confirm that the squelch knob is turned fully
counterclockwise.
UInject an RF signal from the signal generator at -15
dBμoutput, with ±3.5 kHz deviation FM Modulation
of a 1 kHz tone. Select menu item “13: FM-TH113: FM-TH1
13: FM-TH113: FM-TH1
13: FM-TH1” and
press the [A] key to set this parameter. Select menu
item “14: FM-TH214: FM-TH2
14: FM-TH214: FM-TH2
14: FM-TH2” and press the [A] key again.
UInject an RF signal from the signal generator at 0 dBμ
output, with ±3.5 kHz deviation FM Modulation of a 1
kHz tone. Select menu item “15: FM-TI1
15: FM-TI1
15: FM-TI115: FM-TI1
15: FM-TI1” and press
the [A] key to set this parameter. Select menu item
“16: FM-TI216: FM-TI2
16: FM-TI216: FM-TI2
16: FM-TI2” and press the [A] key again.
Power Supply Voltage Display Adjustment
UTune the transceiver to the 144 MHz band in the FM
mode. Confirm that the power supply voltage is 13.8
V (±0.1 V).
USelect menu item “17: VCC17: VCC
17: VCC17: VCC
17: VCC” and adjust this parameter
such that “138138
138138
138” is displayed on the LCD.

19
Over-current Protection Adjustment
USet the mode to CW. Select menu item “18: HF1-IC18: HF1-IC
18: HF1-IC18: HF1-IC
18: HF1-IC.”
Tune the transceiver to the 1.8 MHz band and key the
transceiver. Adjust this parameter for 140 Watts of trans-
mission power.
USelect menu item “19: HF2-IC19: HF2-IC
19: HF2-IC19: HF2-IC
19: HF2-IC.” Tune the transceiver
to the 7 MHz band and key the trans-ceiver. Adjust
this parameter for 130 Watts of transmission power.
USelect menu item “20: HF3-IC20: HF3-IC
20: HF3-IC20: HF3-IC
20: HF3-IC.” Tune the transceiver
to the 21 MHz band and key the transceiver. Adjust
this parameter for 130 Watts of transmission power.
USelect menu item “21: 50M-IC21: 50M-IC
21: 50M-IC21: 50M-IC
21: 50M-IC.” Tune the transceiver
to the 50 MHz band and key the transceiver. Adjust
this parameter for 120 Watts of transmission power.
USelect menu item “22: VHF-IC22: VHF-IC
22: VHF-IC22: VHF-IC
22: VHF-IC.” Tune the transceiver
to the 144 MHz band and key the transceiver. Adjust
this parameter for 60 Watts of transmission power.
USelect menu item “23: UHF-IC23: UHF-IC
23: UHF-IC23: UHF-IC
23: UHF-IC.” Tune the transceiver
to 430.000 MHz and key the trans-ceiver. Adjust this
parameter for 25 Watts of transmission power.
Alignment
RF Power Adjustment
UTune the transceiver to the 1.8 MHz band in the CW
mode. Select menu item “24: HF1-MAX24: HF1-MAX
24: HF1-MAX24: HF1-MAX
24: HF1-MAX.” Key the
transmitter, and adjust this parameter for 100 Watts (±5
W) of transmission power.
USelect menu item “25: HF1-MID225: HF1-MID2
25: HF1-MID225: HF1-MID2
25: HF1-MID2.” Key the trans-
mitter, and confirm that the output power is 50 W
(±5W). In case the transmission power is not within the
specified tolerance, adjust this parameter for 50 W (±5
W) of transmission power.
USelect menu item “26: HF1-MID126: HF1-MID1
26: HF1-MID126: HF1-MID1
26: HF1-MID1.” Key the transmit-
ter, and confirm that the output power is 10 W (±1 W).
In case the power is not within the specified tolerance,
adjust this parameter for 10 W (±1 W) of transmission
power.
USelect menu item “27: HF1-MIN27: HF1-MIN
27: HF1-MIN27: HF1-MIN
27: HF1-MIN.” Key the transmit-
ter, and confirm that the output power is 5 W (±1 W).
In case the power is not within the specified tolerance,
adjust this parameter for 5 W (±1 W) of transmission
power.
UThe other RF power adjustment menus, [HF2-**] and
[HF3-**], should be adjusted in the same manner as
shown above for the 7 MHz and 21 MHz bands re-
spectively.
UTune the transceiver to the 50 MHz band in the CW
mode. Select menu item “36: 50M-MAX36: 50M-MAX
36: 50M-MAX36: 50M-MAX
36: 50M-MAX.” Key the
transmitter, and adjust this parameter for 100 W (±5
W) of transmission power.
USelect menu item “37: 50M-MID237: 50M-MID2
37: 50M-MID237: 50M-MID2
37: 50M-MID2.” Key the trans-
mitter, and confirm that the output power is 50 W (±5
W). In case the transmission power is not within the
specified tolerance, adjust this parameter for 50 W (±5
W) of transmission power.
USelect menu item “38: 50M-MID138: 50M-MID1
38: 50M-MID138: 50M-MID1
38: 50M-MID1.” Key the trans-
mitter, and confirm that the output power is 20 W (±
2W). In case the power is not within the specified tol-
erance, adjust this parameter for 20 W (±2 W) of trans-
mission power.
USelect menu item “39: 50M-MIN39: 50M-MIN
39: 50M-MIN39: 50M-MIN
39: 50M-MIN.” Key the transmit-
ter, and confirm that the output power is 5 W (±1 W).
In case the power is not within the specified tolerance,
adjust this parameter for 5 W (±1 W) of transmission
power.
UTune the transceiver to the 144 MHz band in the CW
mode. Select menu item “40: VHF-MAX40: VHF-MAX
40: VHF-MAX40: VHF-MAX
40: VHF-MAX.” Key the
transmitter, and adjust this parameter for 50 W (±2.5
W) of transmission power.
USelect menu item “41: VHF-MID41: VHF-MID
41: VHF-MID41: VHF-MID
41: VHF-MID.” Key the transmit-
ter, and confirm that the output power is 20 W (±2 W).
In case the transmission power is not within the speci-
fied tolerance, adjust this parameter for 20 W (±2 W)
of transmission power.

20
Alignment
USelect menu item “42: VHF-MIN42: VHF-MIN
42: VHF-MIN42: VHF-MIN
42: VHF-MIN.” Key the transmit-
ter, and confirm that the output power is 5 W (±1 W).
In case the power is not within the specified tolerance,
adjust this parameter for 5 W (±1 W) of transmission
power.
UTune the transceiver to the 430 MHz band in the CW
mode. Select the menu item “43: UHF-MAX43: UHF-MAX
43: UHF-MAX43: UHF-MAX
43: UHF-MAX.” Key the
transmitter, and adjust this parameter for 22 W (±1 W)
of transmission power.
USelect menu item “44: UHF-MID44: UHF-MID
44: UHF-MID44: UHF-MID
44: UHF-MID.” Key the transmit-
ter, and confirm that the output power is 2 W (±0.3 W).
In case the transmission power is not within the speci-
fied tolerance, adjust this parameter for 2 W (±0.3 W)
of transmission power.
TX Gain Adjustment
USelect the USB mode. Inject a 1 mV audio signal at a
frequency of 1 kHz from the AF generator into the MIC
jack.
UTune the transceiver to the 1.8 MHz band and key the
transmitter. Select menu item “45: HF1TXG45: HF1TXG
45: HF1TXG45: HF1TXG
45: HF1TXG” and ad-
just this parameter for 70 W (±10 W) of transmission
power.
UThe other TX gain adjustment menus, “46: HF2TXG46: HF2TXG
46: HF2TXG46: HF2TXG
46: HF2TXG”,
“47: HF3TXG47: HF3TXG
47: HF3TXG47: HF3TXG
47: HF3TXG”, and “48: 50MTXG48: 50MTXG
48: 50MTXG48: 50MTXG
48: 50MTXG”, should be ad-
justed in the same manner as detailed above on the 7
MHz, 21 MHz, and 50 MHz bands, respectively.
UTune the transceiver to the 144 MHz band and key the
transmitter. Select menu item “49: VHFTXG49: VHFTXG
49: VHFTXG49: VHFTXG
49: VHFTXG” and ad-
just this parameter for 35 W (±5 W) of transmission
power.
UTune the transceiver to the 430 MHz band and key the
transmitter. Select menu item “50: UHFTXG50: UHFTXG
50: UHFTXG50: UHFTXG
50: UHFTXG” and ad-
just this parameter for 14 W (±2 W) of transmission
power.
ALC Meter Adjustment
UTune the transceiver to the 21 MHz band in the USB
mode. Select menu item “51: ALC-151: ALC-1
51: ALC-1
51: ALC-1
51: ALC-1.” Key the trans-
ceiver without microphone input and press the [A] key.
Now, a value which the microprocessor computes will
be displayed on the LCD.
URotate the main dial to adjust this parameter to a read-
ing four digits lower than the parame-ter value dis-
played in the previous step.
UAfter setting the parameter, confirm that all the dots of
the ALC meter have gone out.
USelect menu item “52: ALC-M52: ALC-M
52: ALC-M52: ALC-M
52: ALC-M.” Inject a 4.0mV AF
signal at 1 kHz audio frequency from an audio genera-
tor and key the transceiver.
UPress the [A] key and confirm that 9 dots of the ALC
meter light up on the LCD.
Reverse ALC Adjustment
USet the mode on CW, and connect a 150-Ohm dummy
load to the antenna connector.
UKey the transceiver on the 1.8 MHz band, and select
menu item “53: HF1-RV53: HF1-RV
53: HF1-RV53: HF1-RV
53: HF1-RV;” adjust this parameter for an
“S-8” S-meter reading on the LCD.
UThe other reverse ALC adjustment menus, “54: HF2-54: HF2-
54: HF2-54: HF2-
54: HF2-
RVRV
RVRV
RV”, “55: HF3-RV55: HF3-RV
55: HF3-RV55: HF3-RV
55: HF3-RV”, and “56: 50M-RV56: 50M-RV
56: 50M-RV56: 50M-RV
56: 50M-RV”, should be
adjusted in the same manner as shown above on the 7
MHz, 21 MHz, and 50 MHz bands, respectively.
UKey the transceiver on the 144 MHz band and select
menu item “57: VHF-RV57: VHF-RV
57: VHF-RV57: VHF-RV
57: VHF-RV;” adjust this parameter for an
“S-6” S-meter reading on the LCD.
UKey the transceiver on the 430 MHz band and select
menu item “58: UHF-RV58: UHF-RV
58: UHF-RV58: UHF-RV
58: UHF-RV;” adjust this parameter for an
“S-3” S-meter reading on the LCD.
Carrier Level Adjustment
UTune the transceiver to the 21 MHz band in the CW
mode. Connect a 50-Ohm dummy load to the antenna
connector. Select menu item “59: CW-CAR59: CW-CAR
59: CW-CAR59: CW-CAR
59: CW-CAR” and key
the transceiver.
USet this parameter such that the center of the meter on
the LCD lights up.
UConnect the oscilloscope to the antenna connector via
an appropriate attenuator.
USet the mode to AM. Select menu item “60: AM-CAR60: AM-CAR
60: AM-CAR60: AM-CAR
60: AM-CAR.”
Inject a 1.5 mV audio signal at a frequency of 1 kHz
from the audio generator into the microphone jack.
UKey the transceiver and adjust this parameter for 33%
AM modulation on the oscilloscope.