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ELECRAFT KXPA100 - User Manual

ELECRAFT KXPA100
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ELECRAFT
KXPA100
100-WATT AMPLIFIER
OWNERS MANUAL
Revision A6, February 23, 2016
E740199
Copyright © 2016, Elecraft, Inc.
All Rights Reserved

Table of Contents

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Summary

Introduction

Key to Symbols, Abbreviations and Text Styles

In the Box

KXPA100 Amplifier and ATU

Lists the main unit and optional tuner.

Carrying Handle

Describes the unit's handle for portability.

Supplied Accessories

Lists included cables and accessories.

Getting Started

Installation

Instructions for positioning and connecting the unit.

Connections to the Amplifier

Amplifier Connections using the KX3 to KXPA100 Adapter Cable

Details connecting the amplifier to a KX3 transceiver.

Amplifier Connections using the FT-817 Interface Cable

Details connecting the amplifier to an FT-817 transceiver.

Amplifier Connections for Basic Operation

Details connecting the amplifier to other transceivers.

Connections to an External Amplifier

Measuring Key Line Voltage and Current

How to measure voltage/current for external amp key lines.

Operation

Front Panel Controls and Indicators

Explains buttons and lights on the front panel.

Rear Panel Attenuator Switch

Explains the function of the rear panel attenuator switch.

Operation with a KX3 Transceiver

Initial Settings

Setup steps for KX3 operation.

Amplifier Operation

How to operate the amplifier with a KX3.

ATU Operation

How to control the ATU via the KX3.

Operation with a Yaesu FT-817

Initial Settings

Setup steps for FT-817 operation.

Amplifier Operation

How to operate the amplifier with an FT-817.

ATU Operation

How to control the ATU via the FT-817.

Basic Operation with any Transceiver

Initial Settings

Setup steps for general transceiver operation.

Amplifier Basic Operation

How to operate the amplifier generally.

ATU Basic Operation

General procedures for using the ATU.

Faults

Utility Program

Starting the Utility Program

Instructions for launching the software.

Updating KXPA100 Firmware

Steps to update the amplifier's software.

Forcing a Firmware Load

Recovery for firmware loading errors.

Monitoring with Utility Program

Using software to monitor amplifier status.

Faults Reported by the KXPA Utility

Utility error codes and their meanings.

Antenna Tuner

Configuration Save and Restore

Saving and loading ATU configurations.

Updating KX3 Firmware

Updating KX3 firmware using the utility.

Specifications

KXPA100 Amplifier Specifications

Technical specifications for the amplifier.

KXAT100 Antenna Tuning Unit Specifications

Technical specifications for the ATU.

Theory of Operation

KXPA100 Amplifier Block Diagram

Functional overview of the amplifier's internal workings.

KXAT100 Antenna Tuning Unit Block Diagram

Functional overview of the ATU's internal workings.

Control Connector Signals

Cable Schematics

KX3-KXPA100 Adapter Cable Schematic

Wiring diagram for the KX3 adapter cable.

Serial Interface Cable Schematic

Wiring diagram for the serial interface cable.

FT-817 Interface Cable Schematic

Wiring diagram for the FT-817 interface cable.

Appendix A: ALC Adjustment

Adjusting the KXPA ALC

Procedure to set ALC for output power control.

Removing and Replacing Bottom Cover

Instructions for accessing internal components.

Appendix B: KX3 Power Output Display Calibration

What You Will Need

Lists the items required for calibration.

Calibration Procedure

Step-by-step guide to calibrate output display.

Viewing Calibration Results

How to check the calibration outcome.

Reverting to Factory Calibration

Restoring the amplifier's default calibration.

Customer Service and Support

Technical Assistance

Contact information for technical help.

Repair and Alignment Service

Information on returning the product for service.

1-Year Limited Warranty

Details of the product's warranty coverage.

ELECRAFT KXPA100 Specifications

General IconGeneral
Power Output100 W
Frequency Range1.8 - 54 MHz
Input Impedance50 ohms
Frequency Coverage1.8 - 54 MHz
Supply Voltage13.8V DC
Current Drain20 A
ModesSSB, CW
Harmonic Distortion> -50 dB
IMD-30 dB

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