Yaesu FT-223 Manuale utente

INSTRUCTION

MANUAL

FT-223

AESU

MUSEN

CO.,

LTD.

TOKYO

JAPAN

TABLE

CONTENTS

GENERAL

Page

SPECIFICATIONS

Page

INSTALLATION

General

Page

Mobile

Installation

Page

Base

Station

Installation

Page

CONTROLS

SWITCHES

Page

REAR

PANEL

CONNECTIONS

Page

OPERATION

Page

THEORY

OPERATION

General

Page

Transmitter

Section

Page

Receiver

Section

Page

Tone

Burst

Circuit

Page

Tone

Squelch

Circuit

(Optional)

Page

MAINTENANCE

---=

General

Page

Routine

Maintenance

Page

Adjustments

Page

Expanding

Channel

Capabilities

Page

Trouble

-shooting

Page

RESISTANCE/VOLTAGE

CHARTS

Page

PARTS

LIST

Page

FT-223

METER

TRANSCEIVER

GENERAL

The

model

FT-223

compact

transceiver

specifically

designed

provide

high

performance

for

amateur

VHF

/FM

service.

The

transceiver

completely

solid

state

with

provision

for

operation

crystal

controlled

channels

between

144

and

148

MHz.

The

advanced

circuit

design

features

prevent

damage

the

transistors

case

high

antenna

VSWR,

reversed

power

supply

polarity,

while

adjustable

"tone-burst"

generator

included

for

repeater

actuation.

additional

feature,

optional

tone

squelch

circuit

for

selective

calling

system.

The

heavy

gauge

metal

case

provides

extremely

rugged

package,

light

weight,

yet

virtually

immune

the

effects

shock

and

vibration.

The

FT-223

VHF

/FM

transceiver

supplied

complete

with

all

mounting

hardware,

cables,

connectors

and

accessories

required

for

mobile

installation,

shown

Figure

- 1 -

(J)

Figure

Transceiver

with

built-in

speaker

channels

factory

installed).

Dynamic

push-to-talk

microphone

with

retractable

coiled

cord.

Universal

mounting

bracket

(with

screws,

washers

and

nuts).

Power

cable

(with

cigarette

lighter

adapter).

Spare

£uses.

Microphone

hanger.

Miniature

phone

plug

for

external

speaker.

Alignment

tool.

Tap

connector.

- 2 -

HOW

USE

THE

TAP

CONNECTOR

NOT

strip

lation

from

wires.

The

tap

connector

will

handle

most

wire

sizes

used

automotive

instrument

panels.

Slide

the

"hot"

lead

into

tap

connector

shown.

Insert

transceiver

power

lead

the

way

into

connector

(just

past

metal

connector

element).

Using

pliers,

press

the

metal

connector

element

until

FLUSH.

Fold

the

hinged

cover

over

the

connector

element

and

snap

firmly

place.

PLASTIC

INSULATOR

WITH

HINGED

"SNAP-IN''

COVER

CONNECTION

MADE

WITH

ANY

PLIERS

TYPE

TOOL

DRIVING

ELEMENT

OVER

WIRES

_POWER

TRANSCEIVER

SLOT

FOR

SIDE

ENTRY

"HOT"

WIRE

Figure

- 3 -

~WIRES

SELF-STRIPPING

''U''

TYPE

SPRING

PRESSURE

CONNECTOR

ELEMENT

The

compact

design

the

FT-223

transceiver

makes

ideal

for

mobile

installation,

operating

directly

from

the

vehicle

Volt

battery.

For

base

station

use,

accessory

model

FP-2

Two-Way

Power

Supply,

provides

operating

voltage

plus

large

external

speaker.

SPECIFICATIONS

GENERAL

Frequency

Coverage

Number

Channels

Speaker

Microphone

Power

Requirement

Current

Consumption

Metering

Dimensions

Weight

TRANSMITTER

Output

Frequency

Stability

Crystal

Multiplication

Modulation

Deviation

- 4 -

144

146

MHz

146

148

MHz

channels

supplied)

optional

external

VFO

can

used

Internal

dynamic

speaker

with

provision

for

connecting

external

ohm

dynamic

speaker

Dynamic

push-to-talk

microphone

with

retractable

coiled

cord

13.

Volts

DC,

+10%

Amp

receive

Amp

transmit

(LOW)

Amp

transmit

(HI)

Illuminated

front

panel

meter

indicates

relative

received

signal

strength

and

transmitter

power

output

180

(W)

(H) x

220

(D)

Watts

(HI)

Watt

(LOW)

into

ohm

load

13.

Volts

+0.002%

times

(phase

modulation)

±_10

kHz

(factory

adjusted

kHz)

Audio

Response

Spurious

Emissions

Tone

Burst

RECEIVER

Type

Intermediate

Frequency

Sensitivity

Selectivity

Audio

Output

-3

Octave

pre

-emphasis

characteristic

from

300

2500

below

carrier

minimum

Nominally

one

second

1800

(adjustable

between

1300

3000

Hz)

Double

conversion

superheterodyne

(

crystal

controlled)

10.

MHz

first

IF;

455

kHz

second

-4

for

quieting

±_6

kHz

dB;

kHz

Watts

ohms

INSTALLATION

GENERAL

The

model

FT-223

transceiver

designed

primarily

for

mobile

service,

requiring

only

antenna

and

13.

Volts

power

source

for

operation.

However,

when

operated

conjunction

with

model

FP-2

Two-Way

Power

Supply,

the

transceiver

provides

efficient

compact

base

station.

The

- 2

power

supply

provides

13.

Volts

operate

the

transceiver

from

power

source.

The

transceiver

has

been

factory

pre-tuned

and

requires

adjustments

for

normal

operation

into

ohm

load.

The

antenna

location

the

most

important

consideration

either

base

mobile

installation,

with

effective

communication

range

directly

antenna

height.

The

antenna

should

always

the

clear

and

high

possible,

however,

minimum

distance

feet

should

maintained

between

the

VHF

and

other

antennas.

Also,

mobile

installation,

advisable

locate

the

antenna

far

from

the

engine

practical,

order

minimize

ignition

noise

pick-up.

all

installations

ensure

that

the

antenna

VSWR

less

than

1.5:1.

For

mobile

installation,

the

most

popular

antenna

types

are

either

a 1

wave

whip

with

unity

gain,

a 5 / 8

wave

affording

approximately

gain.

Mobile

antennas

are

available

from

most

dealers

who

handle

two-way

mobile

radip

equipment,

other

local

electronic

suppliers.

- 5 -

minimize

losses

the

antenna

system,

use

the

shortest

length

coaxial

cable

that

practical,

avoiding

any

sharp

angles

kinks.

Use

type

RG-8

cable

the

transmission

line

length

exceeds

feet,

while

RG-58

suitable

for

shorter

lengths.

For

all

bends,

form

the

cable

into

radius

not

less

than

times

its

diameter.

MOBILE

INSTALLATION

mobile

service

the

FT-223

should

installed

where

the

controls,

indicators,

and

microphone

are

easily

visible

and

accessible

for

operation.

The

unit

may

mounted

any

position

without

loss

performance

.Suitable

locations

are

under

the

dash,

atop

the

transmission

tunnel,

etc.

universal

bracket

supplied

with

the

transceiver

for

this

purpose.

Install

the

FT-223

follows

(

refer

Figure

3):

Use

the

universal

mounting

bracket

template

locate

the

mounting

holes.

Use

a 3 /

16"

diameter

drill

for

these

holes

and

allow

clearance

for

the

transceiver,

its

controls

and

the

connecting

cables.

Secure

the

mounting

bracket

with

the

screws,

washers

and

nuts

supplied

shown

"3A

Figure

3A.

Install

the

transceiver

the

mounting

bracket,

securing

with

the

four

knurled

head

screws

and

washers

shown

Figure

3B.

- 6 -

Figure

The

supplied

power

cable

may

plugged

directly

into

the

vehicle

cigarette

lighter

receptacle

for

casual

operation

desired.

For

permanent

installation,

the

lighter

plug

may

removed

and

the

leads

routed

directly

the

battery

(

red

positive,

black

negative

ground),

the

nearest

termination

the

battery;

i.e.

ignition

switch,

fuse

block,

etc.

necessary

extend

the

power

leads,

use

#16

AWG

insulated

copper

wire

and

not

extend

the

leads

further

than

required

prevent

excessive

voltage

drop.

CAUTION

--------------

Before

connecting

the

power

cable

the

transceiver,

check

the

battery

voltage

with

the

engine

running

(battery

charging).

the

voltage

exceeds

Volts

DC,

the

regulator

should

readjusted

the

highest

charging

rate

does

not

exceed

Volts.

Also,

sure

observe

proper

polarity

when

making

battery

connections

(

reversed

polarity

will

not

damage

the

FT-223

due

the

protective

circuitry

incorporated

the

design,

however,

the

equipment

will

not

operate

under

this

condition).

- 7 -

Connect

the

power

cable

the

POWER

receptacle

the

rear

panel.

Connect

the

ohm

antenna

cable

the

ANT

receptacle

the

rear

panel.

Connect

the

microphone

cable

the

4-pin

microphone

receptacle

the

front

panel.

external

ohm

speaker

may

connected

the

receptacle

the

rear

panel

desired

(this

automatically

disconnects

the

internal

speaker).

Use

the

external

speaker

plug

supplied.

BASE

STATION

INSTALLATION

base

station,

the

FT-223

requires

source

13.

Volts

amperes.

This

source

may

obtained

from

the

accessory,

FP-2

power

supply.

CONTROLS

SWITCHES

The

FT-223

VHF

transceiver

has

been

designed

for

ease

operation.

sure

you

thoroughly

understand

the

function

each

control

and

indicator

before

operating

the

equipment.

The

operating

functions

are

follows.

FT-223

VHF

/FM

TRANSCEIVER

Figure

- 8 -

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