Elecraft K3S
firmware v4.05
Elecraft · Released Jul 20, 2010 · First seen Sep 14, 2026
Source:
elecraft.com
v4.05 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 4.05 / DSP 2.60
- Additional K3->P3 command responses, including BN.
This release required for production P3 users.
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