Elecraft KX3
firmware v2.46
Elecraft · Released Feb 2, 2016 · First seen Sep 14, 2026
Source:
elecraft.com
v2.46 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
AM transmit bandwidth expanded and ALC power control algorithm fixed with improved power display.
- AM transmit bandwidth increased to 100-4000 Hz
- Fixed AM power control algorithm causing incorrect power ramping
- Peak power output now displayed instead of 25%
Written from Elecraft's release notes, which are printed in full below.
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What's in this update
MCU 2.46 / DSP 1.37
- AM TX BANDWIDTH INCREASED: The AM transmit bandwidth is now approximately 100-4000 Hz (was 100-3000). TX EQ can be used to further shape the passband.
- AM TX ALC IMPROVEMENTS: Fixed a bug in the AM power-control algorithm that was causing power output to start too high, then decrease over time when the operator is speaking. In addition, peak power output is now displayed, rather than power/4 (25%). This is intended to make the operator aware of the actual output from the radio, which accounts for the observed current drain, stress on dummy loads or antennas, etc.
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