FT-8800R-Service_manual.pdf

Dual Band FM Transceiver

FT-8800R

Technical Supplement

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

PWR

VOL

SQL

VOL

KEY2

LOW

V/M

SCN

LOW V/M

SCN

Introduction

This manual provides technical information necessary for servicing the FT-8800R Transceiver.

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 thr board 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 dam-

age that may occur as a result of typographical or other errors that may be present. Your cooperation in pointing out any

inconsistencies in the technical information would be appreciated.

Contents

Specifications ..................................................... 2

Exploded View & Miscellaneous Parts ......... 3

Block Diagram .................................................... 5

Circuit Description ............................................ 7

Alignment ......................................................... 11

Board Unit (Schematics, Layouts & Parts)

Main Unit ...................................................................... 17

Panel Unit ..................................................................... 45

Panel-Sub Unit ............................................................. 51

VR-L Unit ...................................................................... 53

VR-R Unit ...................................................................... 54

Specifications

G ENERAL

Frequency Range:

RX:

108.000 - 520.000 MHz,

700.000 - 999.995 MHz (Cellular Blocked)

TX:

144.000 - 146.000 MHz (or 144.000 - 148.000 MHz),

430.000 - 440.000 MHz (or 430.00 - 450.000 MHz)

Channel Steps:

5/10/12.5/15/20/25/50 kHz

Modes of Emission:

F3, F2

Antenna Impedance:

50-Ohms, unbalanced (Antenna Duplexer built-in)

Frequency Stability:

±5 ppm @ 14° F ~ +140° F (–10 °C ~ +60 °C)

Operating Temperature Range:

–4° F ~ +140° F (–20 °C ~ +60 °C)

Supply Voltage:

13.8 VDC (±15%), negative ground

Current Consumption (Approx.):

RX: 0.5 A (Squelched)

TX: 8.5 A (144 MHz), 8.0 A (430 MHz)

Case Size (W x H x D):

5.5” x 1.6” x 6.6” (140 x 41.5 x 168 mm) (w/o knobs & connectors)

Weight (Approx.):

2.2 lb (1 kg)

T RANSMITTER

Output Power:

50/20/10/5 W (144 MHz),

35/20/10/5 W (430 MHz)

Modulation Type:

Variable Reactance

Maximum Deviation:

±5 kHz

Spurious Radiation:

Better than –60 dB

Microphone Impedance:

2 k

DATA Jack Impedance:

10 k

Ω

R ECEIVER

Circuit Type:

Double-conversion superheterodyne

Intermediate Frequencies:

45.05 MHz/450 kHz (Main band),

47.25 MHz/450 kHz (Sub band)

Sensitivity (for 12dB SINAD):

Better than 0.2 µV

Squelch Sensitivity:

Better than 0.16 µV

Selectivity (–6dB/–60dB):

8 kHz/30 kHz

Maximum AF Output:

2 W @ 8

Ω

for 5% THD

AF Output Impedance:

4-16

Ω

Specifications are subject to change without notice, and are guaranteed within the 144 and 430 MHz amateur bands only. Frequen-

cy ranges will vary according to transceiver version; check with your dealer.

Ω

Exploded View & Miscellaneous Parts

CS1770001

CASE (W/O NYLON NET)

RA02132A0

HIMERON TAPE

M4090149

SPEAKER

RA0415200 (x2 pcs)

GROUND PLATE

T9206228

WIRE ASSY

T9206438A

WIRE ASSY

R0150630

HOLDER

S5000206

FAN GUARD

MAIN UNIT

RA0441300

PAD

RA0446200

LEAF SPRING

RA0438700

RUBBER

M2090034A

FAN

R0137550

COIL SPRING

RA02668AA

CHASSIS

RA026900A

RELEASE KNOB

PANEL Unit

P1090984

CONNECTOR

RA0396900 (x2 pcs)

INTER CONNECTOR

T9101509

CT CABLE

VR-L Unit

No. VXSTD P/N

DESCRIPTION

QTY.

RA040480A

SUB PANEL ASSY

(W/ COIL SPRING, RELEASE KNOB)

U23116007 TAPTITE SCREW M2X16B

RA0397100

REFLECTOR SHEET

U31206007 OVAL HEAD SCREW M2.6X6B

U44308002 TAPTITE SCREW M3X8NI

G6090147A

LCD

RA0396800

LCD HOLDER

U03310002 SEMS SCREW ASM3X10NI

RA0396100

REAR PANEL

RA0507300

FRONT PANEL ASSY

U20308002 BINDING HEAD SCREW M3X8NI

U20318007 BINDING HEAD SCREW M3X18B

RA0404200 (x2 pcs)

ENCODER KNOB

RA0407200

SPACER

SUPPLIED ACCESSORIES

VXSTD P/N

DESCRIPTION

QTY.

T9207010A

WIRE ASSY

A07530005 MH-42 B6JS (depending on transceiver version)

T9021715

R6054387B (x2 pcs)

SPECIAL NUT

RA0396700

LIGHT GUIDE

VR-R UNIT

PANEL-SUB UNIT

DC POWER CORD W/FUSE

RA0404300 (x2 pcs)

KNOB

Q0000081 SPARE FUSE 15 A

RA0397000

DIFFUSER SHEET

RA0404400 (x2 pcs)

KNOB

RA040710A

LIGHT SHEET

Non-designated parts are available only

as part of a designated assembly.

AAA43X001 MH-48 A6J

Exploded View & Miscellaneous Parts

Note:

Block Diagram

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