K3S Modifications & Application Notes
Official Elecraft modification procedures and application notes for the K3S transceiver.
For the latest modifications and alerts, see the Elecraft Mods, Notes & Alerts page.
Mechanical Modifications
Section titled “Mechanical Modifications”- VFO B Knob Instructions Rev A (88 KB) - Replacement VFO B knob installation
Application Notes
Section titled “Application Notes”Virtual Serial Ports
Section titled “Virtual Serial Ports”How to configure virtual serial port connections for CAT control and logging.
630 Meter Operation
Section titled “630 Meter Operation”Guide for operating the K3 or K3S on the 630-meter band (472-479 kHz).
- Operating 630M with K3/K3S (320 KB)
K3 Modifications Also Applicable to K3S
Section titled “K3 Modifications Also Applicable to K3S”Many K3 modifications and application notes apply to both models. See the K3 Modifications page for the complete list, particularly:
- Transverter application notes
- Audio-related modifications
- RF immunity improvements