Yes
I usually run the display dark at night so it won't keep me awake but accidently turned it on for a few channels. Kept lighting up all night whenever those frequencies hit and waking me! Pain in the backside to finally figure out what the offenders were and fix them.
The thing is, unless you program the scanner by computer, you will have to change the setting one frequency at a time. Tedious, to say the least.
You want to change the backlight mode to "on" and it will light up whenever that particular channel goes active.