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Heathkit GD-125 User Manual

Heathkit GD-125
11 pages
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This manual was downloaded from BAMA’s
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Heathkit GD-125 Specifications

General IconGeneral
BrandHeathkit
ModelGD-125
CategoryConference System
LanguageEnglish

Summary

Introduction

Parts List

Component Categories

Lists major component types like resistors, capacitors, hardware, and miscellaneous parts.

Installation

Connection to the Receiver

Explains how to connect the Q Multiplier to a receiver using a coaxial cable.

Safety Precautions

Warns about potential shock hazard with AC-DC receivers and how to mitigate it.

Alignment Procedure

Alignment Tool and Initial Setup

Describes creating an alignment tool and initial receiver preparation steps.

Tuning Adjustments

Covers tuning coil L1 for peak signal and preparing for null adjustment.

Final Alignment and Assembly

Details tuning coil L2 for null and completing cabinet assembly steps.

Operation

Control Functions

Explains the operation of the Q Multiplier in each function switch position (Off, Peak, Null, Broad).

Troubleshooting and Specifications

Troubleshooting Guide

Provides steps to diagnose and resolve common operational difficulties.

Technical Specifications

Lists key performance metrics including frequency, power, and dimensions.

Circuit Description

Circuit Theory

Explains the principles behind the Q Multiplier's peak and null functions.

Circuit Operation

Details how the Q Multiplier circuit achieves its functions through components.

Power Supply

Describes the power supply circuit and its components.