Elecraft KX3 firmware v2.02

Elecraft · Released May 12, 2014 · First seen Sep 14, 2026

Source: elecraft.com

v2.02 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

Faster 2-M excess drive reduction, tripled temp/RF switching settling time, and XVn offset applied.

  • 2-M excess drive reduction faster; can disable via DISP on power-up
  • 2-M temp/RF switching settling time increased 3x
  • XVn offset applied (not for internal transverters)

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

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What's in this update

MCU 2.02 / DSP 1.29

  • EXPERIMENTAL: XVn OFS NOW APPLIED (synthUpdate1()). Not r​ecommended for internal transverters since they're keyed to the Si570 anyway.
  • EXPERIMENTAL: 2-M EXCESS DRIVE REDUCTION HAPPENS MUCH FASTER. Can also disable drive roll-back completely by holding DIS​P on power-up.
  • EXPERIMENTAL: 2-M TEMP/RF SWITCHING SETTLING TIME INCREASED 3X. See txMeter().

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Other versions for this product

See the full firmware history for the KX3