Think you mean the hidden menu..
I havent used it since I upgraded to V2.. here is what i found on how to use it..
P25 AGC Settings
To access these settings:,
1. Press [HOLD] while turning on the scanner.
2. Turn on the Digital AGC option.
3. Tune to a digital channel.
4. While receiving a P25 signal, hold F then tap the scroll knob. The scanner displays the current P25 RES TIME parameter setting (see below for option details).
5. Rotate the scroll control to change the setting.
6. F+rotate the scroll to select another setting.
Parameters:
Analog AGC Settings
To access these settings:,
1. Press [HOLD] while turning on the scanner.
2. Turn off the Digital AGC option and turn on the Analog AGC option.
3. Tune to an analog channel.
4. While receiving a signal, hold F then tap the scroll knob. The scanner displays the current ANA RES TIME parameter setting (see below for option details).
5. Rotate the scroll control to change the setting.
6. F+rotate the scroll to select another setting.
Parameters:
http://www.radioreference.com/forums/showthread.php?t=56027&highlight=uniden+digital+menu
http://www.radioreference.com/forums/showthread.php?t=40794&highlight=hidden+digital+menu