Elecraft K3S firmware `v1.68`

Elecraft · Released Jan 30, 2008 · First seen Sep 14, 2026

v1.68 is not the latest firmware for the Elecraft K3S: the current version is v5.67 (January 22, 2019). Go to v5.67

In short — summary by updatemystuff.com

CW-to-PSK transmit added; UP/DN remote commands enhanced for parameters; data mode stored per-band and per-memory.

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

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CW-to-PSK transmit added. It works, but now that QSOs are possible in this mode, we need to look into the +10 to +16 Hz receive offset reported by users.
"UP" and "DN" remote control commands now work for parameter setup, such as NB, TEXT DEC, DATA MD, NR ADJ, etc. Adding 'B' (e.g., "UPB;", "DNB;") controls the VFO B parameter; otherwise, the VFO A parameter is controlled.
DATA MODE selection is now stored per-band, per-memory.
MIC Source is now independent for voice/data modes. See micCtrlVoice, micCtrlData.
Milliwatt power display now correctly shows "-9.0" dB between -8 and -10.
Synthesizer control improvements (eliminated some ERR VCO cases during VCO CAL, as well as 30-m transmit problems).

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