Elecraft KX3
firmware v1.91
Elecraft · Released Jan 22, 2014 · First seen Sep 14, 2026
Source:
elecraft.com
v1.91 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
2-meter power output limited to 3.0W maximum with automatic reduction based on SWR or current.
- 2-meter power capped at 3.0 watts for safe operation
- Automatic power reduction if SWR or current drain gets too high
- Configure maximum power setting via XVn PWR menu
Written from Elecraft's release notes, which are printed in full below.
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What's in this update
MCU 1.91 / DSP 1.28
- 2-METER POWER CONTROL CHANGES: Power output from the KX3-2M module is limited to 3.0 watts or lower to ensure safe and reliable operation. The KX3 will automatically reduce the 2-meter power setting if SWR or current drain is too high. The maximum desired setting of the PWR control on 2 meters must be configured using the XVn PWR menu entry.
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