Midland 70-1526A Bedienungsanleitung

441

DLAN

LAND

MOBILE

RADIO

SERVICE

MANUAL

MOBILE

TRANSCEIVER

UHF

BAND

[406

430

MHz,

450

470

MHz)

15-25

WATT

MANUAL

NO.:

70-152600

09-1526-SM-4/91-2M

This

manual

section

designed

facilitate

the

set-up

and

service

the

Midland

70-1526

transceivers.

necessary,

service

maual

supplements

will

published

and

distributed

the

following

forms:

Manual

Addition

(MA)

.For

supplemental

information

useful

product

service

improvement.

Printed

BLUE

paper.

Change

Notice

(CN).For

details

about

changes

made

during

production

model

and

serial

number.

Printed

YELLOW

paper.

Manual

Correction

(MC).For

correcting

literature

errors

not

production

changes.

Printed

GREEN

paper.

Technical

Bulletin

(TB)

.......

For

solutions

field

problems

and

tips

for

performance

improvement.

Printed

PINK

paper.

Comments

suggestions

concerning

areas

manual

improvement

are

welcome.

TABLE

CONTENTS

Manual

Supplement

Information.......

.11

Table

Contents

......

lil

SECTION

GENERAL

INFORMATION

Description...1-3

Specifications.....1-3

SECTION

PREPARATION

Pre-Installation

Check.2-3

Complete

Realignment.

SECTION

INSTALLATION

Installation

..3-3

SECTION

SERVICING

Component

Replacement.......4-3

Eliminating

Radio

Interference

.....

Voltage

Charts.

Troubleshooting

Charts

........

-14

SECTION

CIRCUIT

DESCRIPTIONS

Section

.5-3

25-Watt

Section...5-5

Logic

Section.5-5

SECTION

DIAGRAMS

Block

Diagram...6-3

Wiring

Diagram

.6-4

CX-103

Layout.....6-4

CX-104

Layout....

TR-423

Layout

—

Bottom

View

...6-5

TR-423

Layout

—

Top

View

.6-6

TR-423

Schematic...6-7

Component

Layout.

Diode

Pinouts......

Transistor

Pinouts.......6-9

Exploded

View.

SECTION

PARTS

Parts

List....7-3

Replacement

Parts

Ordering

...

SECTION

—

General

Information

SECTION

—

Preparation

SECTION

—

installation

SECTION

—

Servicing

SECTION

—

Circuit

Descriptions

SECTION

—

Diagrams

SECTION

—

Parts

GENERAL

INFORMATION

70-1526

NOTES

GENERAL

INFORMATION

70-1526

DESCRIPTION

The

70-1526

Midland

8-Channel

Wide

Band

transceivers

are

programmable

frequency-synthesized

two-

way

mobile

radios

that

operate

the

UHF

frequency

range.

They

are

programmable

for

eight

channels.

The

70-1526

designed

operate

within

either

two

frequency

ranges:

406—430

MHz

(A-Band),

450—470

MHz

(B-Band).

Transmit

power

adjustable

for

15—25

Watts.

SPECIFICATIONS

Refer

EIA-152-C,

EIA/TIA-204-D,

EIA-220-B,

and

DOC

RSS-119

for

standard

performance

and

method

measurement.

GENERAL

OPERATING

FREQUENCY

RANGE:

A-Band:

406^430

MHz

B-Band:

450—470

MHz

CHANNEL

SEPARATION:

MHz

CHANNEL

SPACING:

kHz

CHANNEL

STEPPING:

12.5

kHz/5

kHz

optional

CHANNEL

CAPACITY:

Programmable

for

eight

channels

POWER

SUPPLY:

13.6

negative

ground

CURRENT

DRAIN:

Transmit

(at

W):

10.0

Receive

rated

audio):

2.0

Standby

(std,

varies

with

options):

400

OPERATING

TEMPERATURE:

-30°

60°

DIMENSIONS

xWxD):

2x7x87/

(50x

178x225mm)

WEIGHT:

2.5

GENERAL

INFORMATION

70-1526

TRANSMITTER

POWER

OUTPUT

(adjustable):

FREQUENCY

STABILITY:

MODULATION

(FOR

100%

1000

Hz):

BANDWIDTH:

SPURIOUS

AND

HARMONICS:

HUM

AND

NOISE:

AUDIO

RESPONSE:

AUDIO

DISTORTION

(±3

kHz

deviation):

OUTPUT

IMPEDANCE:

15—25

±0.0005%

(—30°C

60°

16K0F3E

±5.0

kHz

24/20

MHz

without

retuning

-60

-50

per

EIA

and

DOC

specifications

Less

than

kHz

RECEIVER

FREQUENCY

STABILITY:

SENSITIVITY:

SINAD:

Quieting:

SELECTIVITY:

BANDWIDTH:

ACCEPTABLE

RADIO

FREQUENCY

DISPLACEMENT:

SPURIOUS

REJECTION:

INTERMODULATION:

SQUELCH

SENSITIVITY:

AUDIO

OUTPUT:

Internal

Speaker:

External

Speaker:

±0.0005%

(-30°

60°

0.30

fiV

0.5/fV

-75

±25

kHz

24/20

MHz

without

retuning

±3.0

kHz

-80

-75

0.2/A/

maximum

less

than

distortion

5W@

less

than

distortion

3.2

INPUT

IMPEDANCE:

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