All VHF radios require some form of illumination for the display and controls if they are to be operated in different light levels, that is day/night. This is obtained by the "DIM" or a light symbol control.

Practice on VHF radio simulator

We can adjust the display’s backlight in order to be able to read the information on the display. There are five levels of brightness – press and hold the backlight key to step through and release when the required level is shown.


Adjusting the display's backlight to the maximum level of brightness and switching the backlight off

Last modified: Friday, 13 November 2020, 3:24 PM