Elecraft K3S
firmware v5.51
Elecraft · Released Jul 16, 2016 · First seen Sep 14, 2026
Source:
elecraft.com
v5.51 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 5.51 / DSP 2.88
- TX MONITOR to LINE OUT: Transmit monitor audio (voice or sidetone) is now available at LINE OUT. At present the level is fixed. A future release will allow adjustment.
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