Elecraft K3S
firmware v4.13
Elecraft · Released Sep 23, 2010 · First seen Sep 14, 2026
Source:
elecraft.com
v4.13 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
P3 now correctly tracks VFO after A/B and REV switch presses; band changes faster
- P3 correctly updates when A/B switch is pressed
- Fixed P3 losing VFO tracking when REV switch is used
- Remote band change command executes faster
Written from Elecraft's release notes, which are printed in full below.
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What's in this update
MCU 4.13 / DSP 2.60 / FPF 1.13
- P3 UPDATED CORRECTLY ON K3 A/B SWITCH PRESS.
- P3 FUNCTIONS CORRECTLY AFTER REV SWITCH PRESS:
Previously, holding REV at the K3 would cause the P3 to stop tracking K3 VFO movement. Note: At present, holding REV does not result in any change in the P3 display. This will be corrected in a future revision of K3 firmware.
- BN REMOTE CONTROL COMMAND (BAND CHANGE):
This command now changes bands more quickly.
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