KX2 Software Page

KX2 Beta Firmware Revision

See KX2 Beta Release Instructions for a complete revision history.
This release can be automatically downloaded by KX2 Utility


KX2 Production Firmware Revision

See KX2 Firmware Release Notes for a complete revision history.
This release can be automatically downloaded by KX2 Utility

MCU 2.89 / DSP 1.52, 12/14/2017

  • ADDED FM MODE: FM mode can be used on any band, but it is intended for use with 10-meter repeaters (or 10 meter FM simplex DXing) as well as with external transverters. (For transverter band display setup instructions, see owner’s manual.) FM is considered experimental on the KX2 pending field test results.
    FM Instructions:
    - FM mode can be enabled or disabled using MENU:FM MODE
    - To adjust squelch, tap FIL, then rotate the AF GAIN knob
    - To select +/-/SIMPLEX repeater offset, hold SPLIT
    - Set up repeater splits per-band/per-memory using MENU:RPT OFS
    - Adjust FM deviation using MENU:FM DEV
    - To adjust PL tone deviation, locate MENU:FM DEV, then tap ‘1’ (PRE)
    - To select PL tone, use MENU:FM TONE. Tap ‘1’ to turn tone on/off.
    Note: 1750 Hz tone not usable at this time.
  • MIC REMOTE FUNCTIONS: These functions are being redesigned and have been temporarily disabled.

MCU 2.86 / DSP 1.52, 11/30/2017

  • MAX POWER OUTPUT NOW 12 W ON 80-20 METERS. This power level is intended for light-duty cycle operation, e.g. hunt and pounce. (Note: When using 12 W, recommended supply voltage is 13.5-14 V; minimum 12.8 V. 12 W output is not guaranteed. If current drain is excessive, reduce power.)


KX2 Utility and Drivers for Windows


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.


Elecraft KXUSB Cable for the KX2

Elecraft offers the KXUSB cable for USB only computers etc.  It uses the FTDI chip set.

Before plugging in this cable to any of your computer's USB ports, you may need to install the correct FTDI USB drivers for your computer's operating system.   Drivers are available for most Windows, Mac, and Linux OS's.  Note that most of the latest Windows 7 operating systems already have the proper drivers for the FTDI chip set and will automatically install them if you just plug the KXUSB cable into a USB port.

Connecting the KX2 to a Computer

If your computer has a standard serial port, all you will need is our KXSER cable for the KX2.

Most modern computers no longer have serial ports but instead use USB (Universal Serial Bus) ports for connecting to external devices. Elecraft provides the KXUSB cable to connect the KX2 to these computers.

KX2 Utility Download