Elecraft KX3
firmware v3.02
Elecraft · Released Apr 8, 2022 · First seen Sep 6, 2026
Source:
elecraft.com
v3.02 is the latest firmware for the Elecraft KX3, released April 8, 2022.
In short — summary by updatemystuff.com
Extended CW mode operation at lower supply voltage and fixed ACC IO sidetone.
- CW mode provides 10W down to 9.0V supply voltage
- Fixed stuck sidetone with ACC IO TX inhibit
Written from Elecraft's release notes, which are printed in full below.
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What's in this update
MCU 3.02 / DSP 1.52
- FIXED TX INHIBIT PROBLEM WITH ACC IO OUTPUT: Previously, when ACC IO was used as a TX inhibit output, keying in CW mode could lead to a “stuck” sidetone. This has been corrected for both the LO=INH and HI=INH settings of the ACC IO menu entry.
- MORE OPERATIMG TIME AT 10 W IN CW MODE: In CW mode, the KX3 now provides up to 10 W output as long as the supply is above 9.0 V (on key-down). In other modes the criteria for 10 W output is still 10.0 V. This is required to preserve low transmit IMD.
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