Codan Radio Communications AMP 3 150 User Manual

VHF 30W
POWER AMPLIFIER
INSTRUCTION MANUAL

AMP-3/150 136-174 MHZ

Covers Models:
AMP-3/140-30 AMP-3/160-30

Copyright © 2003 Daniels Electronics Ltd. All rights reserved. No
part of this publication may be reproduced, stored in a retrieval system
or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording or otherwise, without the prior written consent
of Daniels Electronics Ltd.

Document Number:

Revision:

Revision Date:

DE™ is a registered trademark of Daniels Electronic Ltd. registered in
the U.S. Patent and Trademark Offi ce.

IM71-AMP3150-30
1-1-0
Nov 2003

Daniels Electronics Ltd.

Victoria, BC

PRINTED IN CANADA

ii

DOCUMENT CONTROL

This document has been produced, verifi ed and
controlled in accordance with Daniels Electronics’
Quality Management System requirements.
Please report any errors or problems to Daniels
Electronics’ Customer Service Department.

NOTE

The user’s authority to operate this equipment could
be revoked through any changes or modifi cations not
expressly approved by Daniels Electronics Ltd.
The design of this equipment is subject to change
due to continuous development. This equipment may
incorporate minor changes in detail from the information
contained in this manual.

VHF 30W Power Amplifi er Instruction Manual
IM71-AMP3150-30

RF Exposure Warning

Exposure to radio frequency (RF) energy has been identifi ed as a potential environmental factor that must be
considered before a radio transmitter can be authorized or licensed. The FCC has therefore developed maximum
permissible exposure (MPE) limits for fi eld strength and power density, listed in FCC 47 CFR § 1.1310. The
FCC has furthermore determined that determination of compliance with these exposure limits, and preparation
of an Environmental Assessment (EA) if the limits are exceeded, is necessary only for facilities, operations and
transmitters that fall into certain risk categories, listed in FCC 47 CFR § 1.1307 (b), Table 1. All other facilities,
operations and transmitters are categorically excluded from making such studies or preparing an EA, except as
indicated in FCC 47 CFR §§ 1.1307 (c) and (d).

Revised FCC OET Bulletin 65 (Edition 97-01) provides assistance in determining whether a proposed or existing
transmitting facility, operation or device complies with RF exposure limits. In accordance with OET Bulletin 65
and FCC 47 CFR § 1.1307 (b), this Daniels Electronics Ltd. transmitter is categorically excluded from routine
evaluation or preparing an EA for RF emissions and this exclusion is suffi cient basis for assuming compliance
with FCC MPE limits. This exclusion is subject to the limits specifi ed in FCC 47 CFR §§ 1.1307 (b) and 1.1310.
Daniels Electronics Ltd. has no reason to believe that this excluded transmitter encompasses exceptional
characteristics that could cause non-compliance.

Notes: • The FCC’s exposure guidelines constitute exposure limits, not emission limits. They are relevant to

locations that are accessible to workers or members of the public. Such access can be restricted or
controlled by appropriate means (i.e. fences, warning signs, etc.).

• The FCC’s limits apply cumulatively to all sources of RF emissions affecting a given site. Sites
exceeding these limits are subject to an EA and must provide test reports indicating compliance.

iii

RF Safety Guidelines and Information

Base and Repeater radio transmitters are designed to generate and radiate RF energy by means of an external
antenna, typically mounted at a signifi cant height above ground to provide adequate signal coverage. The
following antenna installation guidelines are extracted from Appendix A to OET Bulletin 65 and must be adhered
to in order to ensure RF exposure compliance:

Non-building-mounted Antennas:
Height above ground level to lowest point of antenna ≥ 10 m or
Power ≤ 1000W ERP (1640 W EIRP)

Building-mounted Antennas:
Power ≤ 1000 W ERP (1640 W EIRP)

The following RF Safety Guidelines should be observed when working in or around transmitter sites:

• Do not work on or around any transmitting antenna while RF power is applied.

• Before working on an antenna, disable the appropriate transmitter and ensure a

“DO NOT USE” or similar sign is placed on or near the PTT or key-up control.

• Assume all antennas are active unless specifi cally indicated otherwise.

• Never operate a transmitter with the cover removed.

• Ensure all personnel entering a transmitter site have electromagnetic energy awareness

training.

For more information on RF energy exposure and compliance, please refer to the following:

1) FCC Code of Regulations; 47 CFR §§ 1.1307 and 1.1310.

2) FCC OET Bulletin 65, Edition 97-01, “Evaluating Compliance with FCC Guidelines for

Human Exposure to Radiofrequency Electromagnetic Fields”.

3) http://www.fcc.gov/oet/rfsafety/

VHF 30W Power Amplifi er Instruction Manual

IM71-AMP3150-30

Contents

General Information ...............................................................1

Introduction ................................................................................................1

Performance Specifi cations .......................................................................2

Physical Specifi cations ..............................................................................3

Theory of Operation ...............................................................5

General ...................................................................................................... 5

Amplifi er PCB Circuitry .............................................................................. 5

Control PCB Circuitry................................................................................. 6

Alignment & Installation .........................................................9

Recommended Test Equipment ................................................................. 9

Amplifi er Board Alignment.......................................................................... 9

Control Board Alignment.......................................................................... 10

Power Amplifi er Installation...................................................................... 11

v

Illustrations and Schematics ................................................ 13

VHF 30W Power Amplifi er Block Diagram ............................................... 14

VHF 30W Power Amplifi er Exploded View Diagram ................................ 15

VHF 30W Power Amplifi er RF AMP Board Component Layout (Top) ...... 16

VHF 30W Power Amplifi er RF Amp Board Schematic ............................. 17

VHF 30W Power Amplifi er Control Board Component Layout (Top)........ 18

VHF 30W Power Amplifi er Control Board Schematic .............................. 19

Parts List .............................................................................. 21

Amplifi er Board Electrical Parts List ......................................................... 21

Control Board Electrical Parts List ........................................................... 24

Mechanical Parts List............................................................................... 26

Revision History ................................................................... 27

VHF 30W Power Amplifi er Instruction Manual

IM71-AMP3150-30