Elecraft K3S
firmware v4.60
Elecraft · Released Nov 17, 2012 · First seen Sep 14, 2026
Source:
elecraft.com
v4.60 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
FM filter available for ESSB transmit; transverter frequency entry fixed.
- FM filter now assignable to ESSB transmit
- Transverter direct frequency entry fixed
Written from Elecraft's release notes, which are printed in full below.
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What's in this update
MCU 4.60 / DSP 2.80
- ESSB TRANSMIT CAN USE THE FM FILTER: The wide (FM) crystal filter can now be assigned to ESSB transmit as well as FM and AM. This can potentially free up a crystal filter slot for customers who were using the 6-kHz filter only for AM/ESSB. NOTE: The 6-kHz filter is still recommended for high-performance ESSB and AM receive, as it will provide significantly better close-in dynamic range than the FM filter.
- TRANSVERTER FREQUENCY ENTRY FIXED: The previous release did not handle direct frequency entry to transverter bands correctly (e.g., 144 MHz came out as 180 MHz).
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