Elecraft K3S
firmware v1.77
Elecraft · Released Mar 12, 2008 · First seen Sep 14, 2026
Source:
elecraft.com
v1.77 is not the latest firmware for the Elecraft K3S: the current version is v5.67 (January 22, 2019). Go to v5.67
What's in this update
MCU 1.77 / DSP 1.58
- SSB TX power overshoot corrected.
- DUAL-PASSBAND CW now working correctly (was acting like a single-BW 150-Hz filter).
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