Elecraft KX3 firmware `v2.30`

Elecraft · Released Dec 3, 2014 · First seen Sep 14, 2026

v2.30 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

Improved 2-M/4-M power output and speech compression with consistent CW dot timing, frequency entry fixed.

Written from Elecraft's release notes, which are printed in full below.

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SPEECH COMPRESSION IMPROVED: Corrected internal DSP stage gain, resulting in higher output levels with compression turned on.
2-M/4-M SSB POWER OUTPUT IMPROVED: Max power output improved with and without speech compression turned on. Note: The KX3 will automatically reduce 2-m/4-m power output if safe levels of SWR, current, or temperature are exceeded. (Youll see HI SWR, HI CUR, or HI TEMP flashed on the VFO B display.) This is more likely to happen when heavy speech compression is used, or when using a whip connected directly to the radio. We recommend reducing power to 2 to 2.5 W as required in this case to avoid the automatic power rollbacks or RFI problems.
2-M/4-M CW TIMING IMPROVED: Dot length is now more consistent.
4-M/6-M DIRECT FREQ ENTRY FIXED: Direct frequency entry to 6 or 4 meters now works correctly with a KX3-4M module installed.

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