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Elecraft K3 Docs

Programmer's Reference PDFs

The programmer’s references document the serial CAT (Computer Aided Transceiver) command protocols used to control Elecraft equipment from external software. The original PDF documents are available for download below, and full markdown versions are available for online browsing.

For a task-oriented guide to building applications with these commands, see the K3/K3S Programming Guide — covering connection setup, state machines, event handling, error recovery, and full station integration.

Online Command References

Section titled “Online Command References”

Browse the complete command documentation directly in your browser:

Original PDF Downloads

Section titled “Original PDF Downloads”

K3S/K3/KX3/KX2 Programmer’s Reference

Section titled “K3S/K3/KX3/KX2 Programmer’s Reference”

This shared reference covers the CAT command set for all current Elecraft transceivers.

P3 Programmer’s Reference

Section titled “P3 Programmer’s Reference”

CAT commands specific to the P3 panadapter.

KPA500 Programmer’s Reference

Section titled “KPA500 Programmer’s Reference”

Remote control commands for the KPA500 amplifier.

KAT500 Serial Command Reference

Section titled “KAT500 Serial Command Reference”

Serial control commands for the KAT500 automatic antenna tuner.

Serial Port Configuration

Section titled “Serial Port Configuration”

For guidance on setting up serial connections:

Section titled “Related Resources”