27FTM-10SR O PERATING M ANUALDIMMER FUNCTIONYou may adjust the display dimmer level.1. Press the top panel / key to select “DIMMER”.2. Press the key.3. Rotate the DIAL knob to select a comfortable brightnesslevel.DIMMER 1 ÅÆ DIMMER 2 ÅÆ DIMMER 3 ÅÆÅÆ DIMMER 4 ÅÆ DIMMER 5Å Dim Bright Æ4. Within two seconds of selecting the brightness level, save the new setting and return tothe VFO or Memory Channel mode.When the key function is set to “DIMMER” via the top panel / key, thekey is used as the Dimmer Level control key.HORN ALERT FEATURE (Default “OFF”)The Horn Alert feature outputs one of four unique sounds to the External Speaker.When an optional MLS-200-M10 External Speaker is connected, the FTM-10SR trans-ceiver may be used as an 8 watt Horn Alert.1. Press the top panel / key to select one of the four functions described below:HORN 1: Sounds a Gong Bell.HORN 2: Sounds a flight sound of a UFO.HORN 3: Sounds a klaxon.HORN 4: Sounds an ambulance siren.2. Press the key to activate the Horn Alert feature.When the Horn Alert function is activated, the volume levelgraphic will be displayed on LCD.3. Press the PTT key.U You may change the PTT key function via Menu Item “F23 PTT MODE”.MOMENT: While pressing the PTT key, the audio is output from the speaker (fac-tory default).TOGGLE: Once the PTT key is pressed the audio is output from the speaker, andwhen the PTT key is pressed once again, the audio output is off.U The unique sound, which was selected in step 1 above, will be output from the speaker.U The “HORN OUT” notation appears in the display while the Horn Alert is activated.U Press the [VOL/SEL] key to adjust the volume (AF level) of the Horn Alert output.While the RED LED is on, the volume level can be ad-justed with the dial knob.U To disable the Horn Alert feature, repeat steps 1 and 2 above.SMART M ENU F EATURESGraphic Bar