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Heathkit HD-1410 - User Manual

Heathkit HD-1410
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HEATHKIT
HD-1410
ELECTRONIC KEYER
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Summary

Introduction to the HD-1410 Electronic Keyer

Operating the HD-1410 Electronic Keyer

HD-1410 Electronic Keyer Specifications

Circuit Description of the HD-1410

Clock Circuit

Describes the clock circuit functionality and components.

Bit Generator Functionality

Explains how the bit generator forms dots and dashes.

Next-Bit Memories (NBM)

Details the NBM flip-flop circuit for dot/dash sequencing.

Present-Bit Memory (PBM)

Describes the PBM's role in determining the next bit.

Reset Circuitry Logic

Explains the circuitry for resetting the PBM based on paddle input.

Keyer Output Circuitry

Explains how the keyer output is generated.

Sidetone Oscillator Circuit

Describes the sidetone oscillator circuit.

Power Supply Circuit

Details the power supply circuit.

Block Diagram of the Electronic Keyer

Circuit Board X-Ray View

Circuit Board Voltage Chart

Chassis Photograph Overview

Schematic Diagram of the HD-1410

Summary

Introduction to the HD-1410 Electronic Keyer

Operating the HD-1410 Electronic Keyer

HD-1410 Electronic Keyer Specifications

Circuit Description of the HD-1410

Clock Circuit

Describes the clock circuit functionality and components.

Bit Generator Functionality

Explains how the bit generator forms dots and dashes.

Next-Bit Memories (NBM)

Details the NBM flip-flop circuit for dot/dash sequencing.

Present-Bit Memory (PBM)

Describes the PBM's role in determining the next bit.

Reset Circuitry Logic

Explains the circuitry for resetting the PBM based on paddle input.

Keyer Output Circuitry

Explains how the keyer output is generated.

Sidetone Oscillator Circuit

Describes the sidetone oscillator circuit.

Power Supply Circuit

Details the power supply circuit.

Block Diagram of the Electronic Keyer

Circuit Board X-Ray View

Circuit Board Voltage Chart

Chassis Photograph Overview

Schematic Diagram of the HD-1410

Heathkit HD-1410 Specifications

General IconGeneral
Output Impedance600 ohms
Year Introduced1976
Operational Amplifiers2
Sine Wave Output0-10 V peak-to-peak
Square Wave Output0 to 10 V p-p
Power SupplyInternal
Input/Output ConnectorsBNC

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