A new firmware update for the Lab599 TX-500 transceiver materialized yesterday and is currently available for download.

From the release notes:

v1.10.03 (06.09.2021)

  • Added function: Antenna SWR monitor - determine the characteristics of the antenna (SWR) in the range of the selected band
  • Audio Amplifier path adjustments
  • And about that Antenna SWR monitor function, the English and Russian was also updated to include a description of that function on page 22 in the English manual.

    More about this update once I’ve had a chance to fiddle with it, but the early chatter is that the new antenna SWR monitor function may obviate the need to carry a VNA to the field…

    The SWR monitor is used to determine the characteristics (SWR) of the antenna in the range of the selected band. When measuring, a graph is displayed on the screen, where the Y-axis indicates the SWR value (1-6), the X-axis shows the frequency range (MHz).