Elecraft KX3
firmware v2.34
Elecraft · Released Aug 16, 2015 · First seen Sep 14, 2026
Source:
elecraft.com
v2.34 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
10 W output from 10-V supply enabled; 2-m and 4-m transmit current increased
- 10-W RF output supported at 10-V supply voltage
- 2-meter and 4-meter module transmit current limit increased
Written from Elecraft's release notes, which are printed in full below.
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What's in this update
MCU 2.34 / DSP 1.33
- 10 W OUTPUT DOWN TO 10-V SUPPLY: The KX3 can now put out up to 10 W from a supply voltage as low as 10 V on key-down, assuming that other parameters remain within range (current, temperature, and SWR). This will allow the use of up to 10 W for much longer when running from an 11-V battery, such as a 3-cell Li-ion pack. While we still recommend the use of 11 V or higher when using 10 watts output, this change will allow you to get a few extra dB in the field when you really need it.
- 2 METER/4 METER TX CURRENT LIMIT INCREASED: Transmit current can now be somewhat higher when using the internal 2-m or 4-m module. Previously, some units were not able to attain full power output.
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