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Make/Model Information:

  • Brand:   Yaesu
  • Models included:
    • Yaesu FT-897

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English (EN)
  • Number of pages:   85
  • File size:  ∼ 9.10 MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   ROYA-0012

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Introduction
This manual provides technical information necessary for servicing the FT-897 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, electrolyt-
ic 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.
2002 VERTEX STANDARD CO., LTD. Printed in Japan.
Technical Supplement
FT-897
HF/VHF/UHF
ALL MODE Transceiver
Specifications
Exploded View & Miscellaneous Parts
Block Diagram
Circuit Description
Alignment
Contents
Board Unit ( Schematics, Layouts & Parts )
MAIN Unit
PLL Unit
PA Unit
PANEL Unit
MIC Unit
VR Unit
BATT-CONN Unit
REF Unit
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.
International Division
8350 N.W. 52nd Terrace, Suite 201, Miami, FL 33166, 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
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 (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)
400 Hz-2600 Hz (6 dB)
200-10k Ohms (Nominal: 600 Ohms)
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 V
1.8 MHz-28 MHz 0.2 V 2 V
28 MHz-30 MHz 0.2 V 2 V 0.5 V
50 MHz-54 MHz 0.125 V 1 V 0.2 V
144/430 MHz 0.125 V 0.2 V
(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 V
28 MHz-30 MHz 2.5 V 0.32 V
50 MHz-54 MHz 1 V 0.16 V
144/430 MHz 0.5 V 0.16 V
HF/50 MHz: 70 dB, 144/430 MHz: 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
Exploded View & Miscellaneous Parts
RA0413400
SP HOLDER
RA0398000
SP NET (VND-100)
RA0412300
PANEL ASSY
RA0412100
ROTARY KNOB (AF)
RA0412000
ROTARY KNOB (SQL)
RA0411800
ROTARY KNOB (VFO)
RA0411900
ROTARY KNOB (CLAR)
RA0415100
MAIN KNOB ASSY
PANEL Unit
M2090029
FAN (x 2 pcs)
M4090150
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
RA0397800
BOTTOM CASE (A)
RA0412600
HOLDER HANDLE (x 2 pcs)
RA0412500
HANDLE
RA0397900
SHIELD (CENTER)
R6054387B
SPECIAL NUT
S5000057
LEAD CLAMPER (x 2 pcs)
S4000043
CASE LEG FF-003 (x 2 pcs)
S4000047
CASE LEG FF-003
(w/o RIVET) x 4 pcs
RA0397700
TOP CASE
RA3100700A
FOOT (x 2 pcs)
RA0411600
RUBBER RING
S4000043
CASE LEG FF-003
No. VXSTD P/N DISCRIPTION QTY.
1 U24306001 TAPTITE SCREW M3X6 4
2 U9900144 BINDING HEAD SCREW M3X7B 4
3 U24308002 TAPTITE SCREW M3X8NI 4
4 U31306007 OVAL HEAD SCREW M3X6B 8
5 U31205007 OVAL HEAD SCREW M2.6X5B 2
6 U20408007 BINDING HEAD SCREW M4X8B 2
7 U24206001 TAPTITE SCREW M2.6X6 10
8 U02208002 PAN HEAD SCREW SM2.6X8NI 2
9 U24208001 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
R3135000A
WASHER
R0136380
COIL SPRING
RA0411200
DOUBLE FACE (LCD)
RA0411300
LCD HOLDER
RA0423800
REFLECTOR SHEET
RA0411400
LIGHT GUIDE (LCD)
RA0423700
DIFFUSER SHEET
RA0283900
SPONG RUBBER (SP-B)
RA0416500
HEATSINK PLATE
RA039760A
CHASSIS (MAIN)
RA0452600
PACKING PAD (SHIELD)
RA0460300
SHIELD SHEET (DSP)


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