Designated DSC Distress Call 1. Lift the spring-loaded door, and then press and release the DISTRESS key. 2. Use the Channel knob to select the type of distress call. 3. Press and hold the DISTRESS key for at least three seconds. Scanning Priority Channels 1. Press the 16/9 key (North American models) or the 16+ key (International models) to switch to Channel 16. 2. Press the 16/9 key or the 16+ key again to switch to the second-priority channel. 3. Press the 16/9 key or the 16+ key a third time to return to the original channel. Radio Controls PTT (Push-to-talk)—press to exit the current menu and to return to the Home screen to begin broadcasting. HI/LO—press to display options for selecting between LOCAL and DISTANT reception or for selecting between 1 W and 25 W transmission. DSC—press to display a menu of DSC options. Press again to return to the Home screen. MENU—press to display a menu of configuration options. Press again to return to the Home screen. CLEAR—press to return to the previous screen when you are in the menu options. This key also cancels or mutes an incoming DSC call. Channel—rotate to change the channel, volume, or squelch on the radio, or press to select a menu item. VOL/SQL—press to toggle the function of the Channel knob to adjust the volume and squelch levels. ...