Note that the battery sense wire is reacted to in real-time, not just at power-on. I have mine grounded through a SPST button. I normally run low power but switch to high when conditions warrant. Also useful for tuning. This causes a power reduction in all bands, not just HF.
With default settings, the display will go off after 3 seconds when battery sense is grounded. This feature can be disabled via Menu 044 DISP MODE.
Peter
