Heathkit HA-14 User Manual

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Assembly
and TABLE OF CONTENTS
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Operation
Construction Notes, .... eee
Introduction, eke 9 bee aw ee ee we
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Proper Soldering Techniques......
SSB LINEAR
Step-By-Step Procedure... 2 ees
AMPLIFIER
Step-By-Step Assembly -
Chassis Frame Paris Mounting, ,
Subchassis Wiring, .. ...ee.
MODEL HA-14
AC Power Socket Wiring.
Resistance Check .,..+-
Initial Test, . oe eae ere
Final Assembly, ....0e.
Installation, . . 6 a ee eee
Operation, .. 6 eee wren
In Case Of Difficulty. ...
Troubleshooting Chart, ..
Service Information -
Service, peseeevene
Replacements, ...40-
Shipping Instructions, .
Warranty... eee ene cee
Specifications, ...eeeeee
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Circuit Description. ....6ee%
DC Power Socket Wiring.....
Schematic, ,.. (fold-out from page),
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BENTON HARBOR,
MICHIGAN
Copyright © 1965
Heath Company
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Heathkit HA-14 Specifications

General

Input Impedance	50 ohms
Type	Linear Amplifier
Output Impedance	50 ohms
Tube Complement	Two 572B
Power Requirements	117 VAC, 50/60 Hz
Frequency Range	3.5 MHz to 30 MHz

Summary

Introduction to the SSB Linear Amplifier

Construction Notes and Tool Requirements

Amplifier Component Parts List

Proper Soldering Techniques

Chassis Wiring and Soldering

Guidelines for wiring chassis components and proper soldering methods.

Step-by-Step Procedure Guide

Illustrations in the Manual

Explains the purpose and use of illustrations within the assembly manual.

Soldering Abbreviations and Notes

Details abbreviations like 'NS' and 'S' used in soldering instructions.

Step-by-Step Assembly Instructions

Chassis Frame Parts Mounting

Instructions for mounting parts onto the chassis frame as per Pictorial 1.

Subchassis Wiring Instructions

AC Power Socket Wiring

Resistance Checks and Readings

Initial Test Procedures

Final Assembly Steps

Unit Installation Guidelines

Location and Air Circulation

Guidance on selecting a suitable mounting location for good air circulation.

Power Source Requirements

Specifies the required DC voltage source for operating the linear amplifier.

Amplifier Connections

SB-400 Transmitter Connection

Instructions for connecting the linear amplifier to the SB-400 transmitter.

HW-12, HW-22, HW-32 Transceiver Connection and Modification

Details on connecting and modifying specific transceivers for external ALC.

Operating the Linear Amplifier

SSB Operation Procedures

Step-by-step guide for operating the amplifier in SSB mode.

SWR Measurements and Tuning

Procedure for measuring SWR and tuning the amplifier for optimal performance.

CW Operation

In Case of Difficulty

Troubleshooting Chart

Service and Technical Support

Product Warranty Information

Technical Specifications

Circuit Description

Input Circuit Description

Explains the function and components of the amplifier's input circuit.

Output Circuit Description

Details the components and operation of the amplifier's output circuit.

Antenna Change-Over, ALC, and Cutoff Bias Circuits

Describes the antenna relay, ALC, and cutoff bias circuitry.