Elecraft KX3
firmware v0.99
Elecraft · Released Apr 26, 2012 · First seen Sep 14, 2026
Source:
elecraft.com
v0.99 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
Fixed preamp losing gain with noise blanket, prevented TX in ACC2 menu, improved wattmeter calibration.
- Preamp no longer loses gain when noise blanket is on
- TX disabled in ACC2 IO menu to prevent accidents
- Wattmeter can be calibrated at any power level
Written from Elecraft's release notes, which are printed in full below.
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What's in this update
MCU 0.99 / DSP 0.85
- NO TX IN ACC2 IO MENU ENTRY: While in the ACC2 IO menu entry, the KX3 cannot transmit. This will prevent accidental transmit when the parameter is set to HI=PTT, etc.
- “MP” DIRECT MENU PARAMETER SET COMMAND IMPROVED: When MP is used to GET or SET menu parameters that involve only specific bits out of the 8 bit MPnnn value, other bits can no longer be inadvertently modified by a SET and always read 0 on a GET. See example in Programmers Reference.
- HOLDING DISP SWITCH on POWER-UP OVERRIDES TX ERRORS (TXC, TXS, TXN, TXO). This is intended for engineering and troubleshooting use.
- TRANSMIT OK IN WATTMTR MENU ENTRY EVEN IF TX CAL NOT COMPLETE. This allows the watt meter to be calibrated at any desired power level earlier in the alignment process.
- DSP 0.85 BUG FIX: When the NB is on, turning the PREAMP on/off no longer results in a loss of gain.
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