ELECRAFT K2/100 User Manual

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Appendix G, 100-W Stage and RS-232 I/O (K2/100) Rev H3, July 24, 2017
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ELECRAFT K2/100 Specifications

General

Type	HF Transceiver
Power Output	100 W
Receiver Type	Superheterodyne
Power Supply	13.8 V DC
Modes	SSB, CW, AM, FM
Tuning Steps	10 Hz
IF Bandwidth	500 Hz, 2.4 kHz, 6 kHz
Dynamic Range	100 dB
Frequency Range	160m - 10m

Summary

Appendix G, 100-W Stage and RS-232 I/O (K2/100)

Introduction to the KPA100

Tools Required for KPA100 Assembly

Customer Service and Warranty Information

Elecraft 1-Year Limited Warranty Details

Outlines the coverage, terms, and limitations of the product's warranty.

KPA100 Parts Inventory and Preparation

Assembly Part I: Initial Component Installation

Visual Inspection and Initial Electrical Tests

Performing Initial KPA100 Electrical Tests

Steps for conducting essential electrical tests to verify the KPA100's basic functionality.

KPA100 Board Installation and Cable Connections

KPA100 DC Voltage Measurements

Assembly Part II: Winding Toroids and Transformers

Mounting Power Transistors and Heat Sink Assembly

Alignment and Installation Procedures

Final KPA100 Board Connections and Checks

Receiver and Transmitter Test Procedures

Performing Transmitter Tests

Steps to test transmitter output, signal quality, and power levels across different bands.

SWR Bridge Adjustment and Power Calibration

KPA100 Power Supply and Menu Configuration

Fan Test, Keying Tests, and Bias Current Adjustment

Shield Assembly and Ground Strap Installation

KPA100 Installation and Final Steps

Installing KPA100 in K2 and Panel Preparation

Final Checks and High Power Operation Prep

Crucial final checks, including transistor hardware tightening and preparing for high-power transmission.

Using the K2/100 at High Power

Controls, Fan, and Power Settings

Transmit Warnings and Operating Modes

Remote Control via RS-232 Port

RS-232 Interface Setup and Serial Cable Assembly

Serial Interface Testing and Computer Control Setup

Software Configuration for K2/KPA100 Operation

K2/100 Technical Specifications

Troubleshooting and Repair Guide

Diagnosing Receiver and Transmitter Problems

Common issues related to receiver problems and transmitter malfunctions, with solutions.

Troubleshooting Common KPA100 Faults

Troubleshooting steps for specific error messages like HI CUR, HI REFL, and PA HOT.

Circuit Details Explanation

Schematic Diagrams

Parts Placement Drawings (Top Side)

Parts Placement Drawing (Bottom Side)