KAT500 Software Page

See the bottom of this page to get the latest KAT500 Utility. 

Beta Firmware Revisions


Only the current production firmware release can be downloaded by KAT500 Utility automatically.

Browse KAT500 Beta Firmware FTP Folder

Current KAT500 Firmware Revisions

MCU 1.67, March 12, 2014

This release can be automatically downloaded by KAT500 Utility.tility.

See KAT500 Firmware Release Notes for a complete revision history.

KAT500 Utility or newer. See downloads below.


FAQ: Consolidated Release of K-Line Firmware
(How to setup VFO Tracking for your KAT500 and K3)

  • Change to avoid early search termination by a transient SWR dip. Pause for exciter fold back recovery and average over more coupler samples when tuner setting is "best so far" or reaches "stop tune" threshold. Tuning stutters a bit, but sometimes a better tuning solution is found.

  • Experimental change to Icom AH-4 Start to perform Auto Tune to avoid full search tune on each Icom TUNE button press

  • Perform memory recall tune on transition from mode BYP to MAN or AUTO

  • Speed up some tunes



KAT500 Utilities and Drivers for Windows, Mac and Linux

Use this software to load the latest firmware into your KAT500 

Minimum Operating System Requirements for Elecraft Utilities:

Microsoft Windows: XP Service Pack 3 or later, including Vista, 7, 8, and 8.1.

Apple Mac: OS X 10.6 (Snow Leopard) or later

X86-based Linux: GTK+ 2.8 or later, glibc-2.4, libstdc++.so.6 and cURL. 64-bit Linux requires 32-bit compatibility libraries.


KXUSB Drivers:


KAT500 Utility:

After completing a new firmware download to your KAT500, please power cycle it OFF and then back ON before using it.