Elecraft KX3
firmware v2.03
Elecraft · Released May 20, 2014 · First seen Sep 14, 2026
Source:
elecraft.com
v2.03 is not the latest firmware for the Elecraft KX3: the current version is v3.02 (April 8, 2022). Go to v3.02
In short — summary by updatemystuff.com
Transmit monitoring checks supply current, PA temperature, SWR, and drive, rolling back power or stopping transmit if out of range.
- Supply current, PA temperature, SWR, and drive monitoring
- Power rollback when parameters exceed limits
- Stops transmit in critical cases
Written from Elecraft's release notes, which are printed in full below.
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What's in this update
MCU 2.03 / DSP 1.29
- KX3-2M TRANSMIT MONITORING IMPROVEMENTS: Now checking for excess supply current, high PA temperature, high SWR, and excessive drive. If any parameter is out of range, power will be rolled back, and in some cases transmit will be terminated.
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