Uniden UM425 English Owners Manual - Page 23

Using Your Radio • The currently selected item is highlighted in reversed out text. • Press the CHANNEL UP button on the radio or the▲button on the microphone to move up a line in the menu; if you are at the top line in the menu, the cursor jumps to the bottom of the menu. • Press the SELECT-1W/25W button to choose the selected item. • Press the CHANNEL DOWN button on the radio or the▼ button on the microphone to move down a line in the menu; if you are at the bottom line of the menu, the cursor jumps to the top of the menu. • Press the MENU-PA button to go back to the previous menu screen. • From any menu screen, choose Exit or press the 16/9-TRI button to close the menu screen. Making a voice MAYDAY call (see inside front cover) Setting the volume Turn the volume knob clockwise to increase the speaker volume; turn it counter-clockwise to decrease the volume. Setting the squelch level The squelch feature reduces the level of static on the speaker by filtering out the background channel noise. At the lowest squelch level, the speaker plays all radio signals, including any noise on the channel. Setting the squelch level higher filters out channel noise and lets only actual radio transmissions through. Strong signals Weak signals Noise No Squelch Medium Squelch E-19 High Squelch