Eagle UHF 250 WATT POWER AMPLIFIER User Manual

UHF 250 WATT POWER AMPLIFIER

USER Manual

EAGLE WIRELESS INTERNATIONAL

www.eglw.com [e-mail]

101 Courageous Drive

League City, TX 77573

Telephone: [phone]

Fax: [phone]

Toll Free: 1-800-628-3910

Preface

Preface

Scope

This user manual contains a high level description of the UHF 250 Watt Power
Amplifier as well as a detailed technical description. The scope of this document
is to provide the reader with a general understanding, system description, and
operation of the UHF 250 Watt Power Amplifier.

Section 1 – Presents a general introduction of the UHF 250 Watt Power
Amplifier who are familiarizing themselves with the system for the first time.

Section 2 – Highlights the major features and specifications of the power
amplifier.

Section 3 – Outlines the major system components.

Section 5 – Appendices and Schematics.

Copyright

This document contains proprietary information protected by copyright. All rights
reserved. No part of this document may be photocopied, reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any
language in any form by any means, electronic, mechanical, magnetic, optical,
chemical, hydraulic, manual or otherwise without prior written consent of EAGLE

WIRELESS INTERNATIONAL, INC.

EAGLE WIRELESS INTERNATIONAL, INC. software and firmware programs

used in the UHF 250 WATT POWER AMPLIFIER is protected by copyright.
Therefore, no software or firmware may be copied or reproduced in any manner
written consent of EAGLE WIRELESS INTERNATIONAL, INC.

Notice

Some EAGLE WIRELESS INTERNATIONAL products may be labeled Eagle
Telecom International. These are simply trade names for certain EAGLE

product lines.

EAGLE WIRELESS INTERNATIONAL, INC. provides this publication as is with
no warranty of any kind, either express or implied including, but not limited to the
implied warranties of merchantability or fitness for a particular purpose. Some
states do not allow disclaimer or express or implied warranties in certain
transactions; therefore, this statement may not apply in all instances.

Version 3 i 07/18/01

Preface

This publication may have technical inaccuracies or typographical errors.
Therefore, the information contained in this manual is subject to change or
revision. Changes or revisions will be incorporated in all new editions of the
publication. EAGLE WIRELESS INTERNATIONAL, INC. may at any time make
improvements and/or changes in product(s) and/or program(s) described in this
publication.

Products are stocked at the address below. Requests for copies of this
publication and for technical information should be directed to EAGLE

WIRELESS INTERNATIONAL, INC.

Customer Service

Eagle Wireless International’s Customer Service Department is dedicated to
provide complete product support to all its customers.

For Technical Assistance only, call the toll-free number 1-800-628-3910,
between the hours of 8:00 A.M. and 5:00 P.M. (CST).

For after hours emergencies, call [phone] for instructions. If you reach
voice mail, please leave a message and your call will be returned promptly.

Customers should maintain a stock of replacement parts or units for emergency
backup.

Eagle Wireless International’s factory trained field service engineers are available
for system installation and optimization. For assistance, write or call:

EAGLE WIRELESS INTERNATIONAL, INC.

101 Courageous Drive, League City, TX 77573

Telephone [phone]

Fax [phone] Toll Free 1-800-628-3910

Version 3 ii 07/18/01

Preface

Cautions & Safety Regulations

All RF power transistor and RF termination resistors in this power amplifier
contain the toxic substance beryllium oxide. These assemblies are located on
the combiner, splitter and power amplifier boards. The fumes and dust of
beryllium oxide is also toxic and should only be treated by trained personnel
using proper precautions. Federal law and most state laws strictly prohibit
disposal of beryllium oxide as a public waste.

FCC Requirements

FCC regulations state that:

1. Radio transmitters may be tuned or adjusted only by persons holding a
general class commercial radiotelephone operator’s license, a registered
engineer or by personnel working under their immediate supervision.

2. The RF power output of a radio transmitter shall be no more than that
required for satisfactory technical operation considering the area to be
covered and local conditions.

3. The frequency, deviation, and power of a base station transmitter must be
maintained within specified limits. It is recommended, therefor, that these
three parameters be checked before the station is placed in service.

4. The power input to the final radio frequency stage shall not exceed the
maximum figure specified on the current station authorization. This power
input shall be measured and the results recorded:

a. When the transmitter is initially installed.
b. When any change is made in the transmitter, which may

increase the power input.

c. At intervals not to exceed on year.

FCC Interference Warning

FCC regulations state that:

This equipment generates, uses, and can radiate radio frequency energy and if
not installed and used in accordance with the instructions manual, may cause
interference to radio communications. As temporarily permitted by regulation it
has not been tested for compliance with the limits for Class A computing devices
pursuant to Sub-part J of Part 15 of FCC Rules, which are designed to provide
reasonable protection against such interference. Operation of this equipment in
a residential area is likely to cause interference in which case the user at his own

Version 3 iii 07/18/01

Preface

expense will be required to take whatever measures may be required to correct
the interference.

OSHA Safety Standards

The United States Department of Labor, through the provisions of the
Occupational Safety and Health Act, has established an electromagnetic energy
safety standard with applies to the use of this equipment. Proper use of this
radio equipment will result in exposure below the OSHA limit. The following
precautions are recommended:

DO NOT operate the transmitter of a fixed radio (base station, radio paging
transmitter RF equipment) when someone is within two feet (0.6 meters) of the
antenna.

DO NOT operate the transmitter of any radio unless all RF connectors are secure
and any open connectors are properly terminated.

In addition, all equipment must be properly grounded according to National &
Local Electrical Codes.

Lightning Protection Considerations

The Transmitters and Power Amplifiers have protection against high voltages but
for all external connections, added protection against lightning attack should be
considered. For Transmitters used for high power applications with tower
antennas, the following measures will provide sufficient protection against minor
lighting attacks.

− Keep the antenna tower grounding resistance as low as possible.

− The ground rods should be made of copper and be at least eight feet

long. Multiple rods should be used over a single rod, if possible.

− All transmission line bends should be made according to
manufacturer’s exact specifications. All ground line bend should be
made as large as possible.

− Ground the transmission line sheath at every opportunity. Also,
ground the transmission line where it is supported on poles and where
it enters the building.

− Whenever possible, run at least a part of the transmission line through
a length of ground conduit.

− Tie all equipment grounds together to a single point. Then, ground that
point to a grounding rod using as short and as straight a ground wire
as possible.

− The ground wire must never be bundled with other wires in the system.
Also, ground wires must not run along a metal plane.

Version 3 iv 07/18/01

Preface

Integrated Circuit Handling Procedure

Care should be taken in handling the circuit boards during installation and
service. A number of IC’s (Integrated Circuits) used in the equipment are from
the MOS (Metal Oxide Semiconductor) family and are vulnerable to damage from
static discharges.

Exercise the following precautions when handling these components.

− Before handling components, ground yourself by touching a ground
rod or the grounded chassis of the equipment momentarily.

− Whenever, either installing or servicing the equipment, take proper
static protection (e.g. wearing a conductive wrist-strap) and stand on a
conductive mat, which is connected to the ground through a 100K ohm
resistor.

− Ground all test equipment and soldering stations that are electrically
powered.

Always connect the ground lead of the test equipment to the Base Station,
Extend-A-Page, and/or Power Amplifier, (which ever is being serviced) first and
then the test probe. While disconnecting, remove the test probe prior to the
ground lead.

Equipment Unpacking and Inspecting

Remove all hardware from the shipping carton and inspect the unit for damage.
If shipping damage has occurred, contact the carrier immediately. Obtain an
RMA number from Eagle Wireless International and return the damaged unit.
Use the original customized package for shipment. All damages must be
reported within 15 days of shipment.

Version 3 v 07/18/01

Warranty

Limited Warranty

1. The product line of paging and mobile equipment, base stations/power
amplifiers, receivers, transmitters, security and transmitter control equipment
sold by EAGLE WIRELESS INTERNATIONAL, INC. is warranted to the
original buyer to meet the then current published specifications, drawings
and/or such modifications thereof as Buyer and Seller have agreed to in
writing and to be free from defects in workmanship and materials. Seller’s
entire warranty obligations are limited to making adjustments by repairing or
replacing any product which fails to meet this warranty and which is returned
to Seller. Replacement, repairs, or adjustment under this warranty shall be

F.O.B. League City, Texas and does not reinstate the warranty set forth
herein. Under all circumstances, the warranty will expire not later than one

(1) year after date of such first shipment.

2. This warranty is void and adjustment will not be allowed for products which
have been subjected to abuse, improper application or installation,
unauthorized alteration, or accidental/negligent damage in use, storage,
transportation or handling.

3. This warranty does not apply to:

a. Incandescent lamps, LEDs, batteries, fuses and other consumable type

goods, operable upon arrival only.

b. Parts and accessories (other than those in the equipment) sold by Eagle

Wireless International, Inc.

c. Service calls and/or shipping charges necessary to transport the equipment

between customer’s location and the factory.

d. Routine checkout and/or tuning equipment.

e. Equipment damaged by an act of God and/or nature, war or terrorism.

f. Equipment that has been sold, rented, or acquired in bankruptcy

proceedings.

g. Equipment where the serial number has been removed, defaced, or

changed.

Version 3 vi 07/18/01

Warranty

4. The Seller shall have the right of final determination as to the following: (a) existence
of cause and defect, (b) whether adjustment will be allowed, and (c) if allowed,
whether adjustment will be by repair or replacement. When adjustment is not
allowed, a reasonable charge will be made to the Buyer to cover the Seller’s cost of
inspection and handling. During the first 30 days from the date of original shipment
the seller may elect to accept a returned item for full credit less all shipping charges.
After this thirty day period the buyer will be required to pay a restocking fee of twenty
five percent of the invoice amount if the Seller elects to accept the returned item.

5. In the event the Seller determines that any product claimed to be defective is not
subject to the warranty provisions set forth herein, the Buyer will be notified that the
product is not subject to adjustment. Unless the Buyer furnishes disposition
instructions for the product within thirty (30) days after such notification, Seller may
return product “as is” to Buyer, transportation collect.

6. In returning products under this warranty, Buyer shall comply with terms set forth in
the Warranty Return Procedures. Buyer shall comply with terms set forth in the
Warranty Return Procedures. Buyer in all cases will obtain and comply with Seller’s
packaging and shipping instructions. Buyer will pay for packing, transportation and
transit insurance costs for return of products. Where adjustment is not allowed,
products will be returned to the Buyer, transportation collect.

7. Replacement parts may be secured on an immediate exchange basis, with the
Buyer being billed F.O.B. League City, Texas for parts and shipping. Credit will be
issued for exchange items and shipping upon their receipt, shipping prepaid, at
Eagle Wireless International, Inc.

8. There are no warranties, express or implied, that extend beyond the description on
the face of this contract. Seller shall not be liable for consequential damages. No
change in this warranty shall be binding upon the Seller unless it shall be in writing
and signed by a duly authorized representative of Eagle Wireless International,
Inc.

Version 3 vii 07/18/01

Table of Contents

Page

Preface ………………………………………………………….. i

Limited Warranty ……………………………………………….. vi

Introduction ……………………………………………………… 1-1

Features and Specifications…………………………………… 2-1

Major System Components …………………………………… 3-1

Schematics and Appendices. ………………………………… 4-1

Introduction

Section 1 – Introduction

UHF 250 WATT POWER AMPLIFIER

Version 3 1-1 07/18/01