Elecraft KX2
firmware v2.81
Elecraft · Released Oct 5, 2017 · First seen Sep 14, 2026
Source:
elecraft.com
v2.81 is not the latest firmware for the Elecraft KX2: the current version is v3.02 (April 8, 2022). Go to v3.02
In short — summary by updatemystuff.com
MH3 PTT double-tap reports frequency in Morse code, plus extended radio control features.
- PTT double-tap reports current frequency as Morse code audio
- MH3 mic extended radio controls added
Written from Elecraft's release notes, which are printed in full below.
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What's in this update
MCU 2.81 / DSP 1.52
- MH3 MIC EXTENDED RADIO CONTROLS: See separate document, “KX2 Remote Control Using the MH3 Mic.”
- MH3 PTT DOUBLE-TAP FREQUENCY REPORT: Tapping PTT twice quickly reports the current operating frequency as 3 digits in Morse code audio. For example, if youre on 14.285 MHz USB, the report will be “U 285”. This is useful in conjunction with MH3 extended radio controls (see above), as well as during mobile operation.
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