Elecraft KX2 firmware v2.77

Elecraft · Released May 26, 2017 · First seen Sep 14, 2026

Source: elecraft.com

v2.77 is not the latest firmware for the Elecraft KX2: the current version is v3.02 (April 8, 2022). Go to v3.02

In short — summary by updatemystuff.com

Adds built-in logging to capture transmitted CW and data text with time and band.

  • Logs transmitted text (up to 2048 characters) in CW and data modes
  • Time stamping with KXIO2 real-time clock or manual time setting
  • Display interface to browse logs and command dump capability

Written from Elecraft's release notes, which are printed in full below.

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What's in this update

MCU 2.77 / DSP 1.50

  • BUILT-IN LOGGING (CW and DATA MODES): When using the KX2 hand-held, logging may be difficult. The KX2 can now capture up to 2048 transmitted characters, a​long with time, band, and mode, so you can update a paper or electronic log later on.

To enable logging, set MENU: LOGGING to ON.

Logging applies to CW (C), PSK-D (P) and FSK-D (F) modes, and only when using the internal keyer.

To take advantage of time stamping, either set the time (MENU: TIME) on every power-up of the KX2, or install a KXIO2, which includes a real-time clock powered by the internal battery.

When logging is enabled, the DVR icon (above the S-meter) flashes slowly.

Outgoing text decode is turned on, allowing you to make sure youve sent call signs accurately.

If you fill the log, LOG FULL will be ​shown briefly, and the DVR icon will stop flashing.

To review logged text, tap DISP and rotate VFO B to find the LOG display.

The VFO A knob can then be used to scroll through text.

Time/mode/band are shown on VFO A (e.g., “0023 C14”); text is shown on VFO B.

Holding CLR erases the entire log.

To “dump” the log, send “LG;” to the KX2 via KX2 Utilitys Command Tester screen.

Tips: To conserve space, use message buffers (MSG) to send CQs, name/QTH, etc.

Messages are not recorded in the log.

To start/stop logging quickly, assign the LOGGING menu entry to a programmable function switch (PF1-PF4).

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Other versions for this product

See the full firmware history for the KX2