Elecraft KAT500
firmware v1.10
Elecraft · Released Nov 4, 2012 · First seen Sep 14, 2026
Source:
elecraft.com
v1.10 is not the latest firmware for the Elecraft KAT500: the current version is v2.16 (May 29, 2024). Go to v2.16
In short — summary by updatemystuff.com
Attenuator deployment now conditional on power level and SWR recovery delay added.
- Conditional attenuator deployment based on power during tuning
- Attenuator disconnect when forward power inadequate
- Post-tuning delay for amplifier SWR recovery
Written from Elecraft's release notes, which are printed in full below.
Was this useful? Thanks.
What's in this update
Deploy the attenuator on each full tune unless power is too high. Disconnect attenuator if we don't have enough VFWD. Add a short delay after tuning but before releasing the amplifier key interrupt relay to give the amplifier a little time to forget SWR during tuning
updatemystuff.com never hosts firmware files — always download from the official source.
Get it from ElecraftWatch the KAT500 for updates
Create a free account and get an email the moment Elecraft publishes new firmware.
Create account & watch