4TK-61101. Controls and Functions1-1. Front PanelOPERATING FEATURESMON A B C SCN13 4 5 6 7 8 9 10Display 2 SpeakerVolume controlTurn clockwise to increase the volume. Turn counter-clockwise to decrease the volume./ keysPress these keys to activate their programmable func-tions. The default settings of these keys are “Channel Up”( ) and “Channel Down” ( ).Microphone jackInsert the microphone plug into this jack.IO (Power) switchPress to switch the power ON. Press and hold for ap-proximately 1 second to switch the power OFF.MON keyPress MON to activate its programmable function. Thedefault setting of this key is “Monitor”.A keyB keyC keySCN keyPress SCN to activate its programmable function. Thedefault setting of this key is “Scan”.LEDLights red while transmitting. Lights green while the se-lected channel is busy. Blinks orange when you receive acall by 2-Tone or DTMF.123456789Press these PF (programmable function)keys to activate their programmable func-tions. The default setting of these keys is“No Function”.101-2. DisplayDisplays the operating Channel number,the Channel name, and the transceiverstatus.Displays the operating channel numberand the channel status:P indicates a Priority channelHC indicates a Home ChanneltA indicates Talk Around modeFlashes when a call is received by DTMFor 2-Tone signaling. Appears during andafter transmitting if set by the dealer.Appears when signaling squelch isturned OFF.Appears while scanning is in progress.Appears when the optional scramblerboard is enabled.Appears when the selected channel is inthe scanning sequence.Appears when Aux is ON.Appears when Operator Selectable Toneis enabled.1-3. Rear Panel1-4. MicrophoneTK-6110Antennaconnector Power inputconnector15 pin connector(for accessories)PTT (Push To Talk) switchPress and hold to transmit,then speak into the microphone.Release to receive.