TK-71604OPERATING FEATURES1. Controls and Functions1-1. Front Panelqi o !0 !1 !2 !3 !4w e r t y u1-2. Microphone!5q (Power) switchPress to switch the transceiver ON or OFF.w keyPress to activate its programmable function. The defaultsetting is Volume Up.e keyPress to activate its programmable function. The defaultsetting is Volume Down.r DisplayRefer to right.t keyPress to activate its programmable function. The defaultsetting is Zone Up.y keyPress to activate its programmable function. The defaultsetting is Zone Down.u SpeakerInternal speaker.i Microphone jackInsert the microphone plug into this jack.o TX/RX IndicatorLights red while transmitting. Lights green while receiv-ing a signal.!0 keyPress to activate its programmable function. The defaultsetting is Squelch Off Momentary.!1 keyPress to activate its programmable function. The defaultsetting is None (no function).!2 keyPress to activate its programmable function. The defaultsetting is Channel Down.!3 keyPress to activate its programmable function. The defaultsetting is Channel Up.!4 keyPress to activate its programmable function. The defaultsetting is None (no function).!5 PTT switchPress this switch, then speak into the microphone to call astation.1-3. DisplayIndicator DescriptionAppears when the key programmed asMonitor or Squelch Off is pressed.Appears when the DTMF or 2-tone code ofa call matches the code in your transceiver.Appears while using the Talk Aroundfunction.The selected zone is added to thescanning sequence.Appears while scanning.Appears when a message is stored in thetransceiver stack memory. Appears andblinks when a new message has arrived.Appears when the AUX port has beenactivated.The selected channel is set as a Prioritychannel.Appears when the Horn Alert functionhas been activated.The selected channel is added to thescanning sequence.Appears when Scrambler function hasbeen selected.Appears when the Public Addressfunction has been activated.Displays the currently selected zone andchannel number, or the channel name.1-4. Rear PanelExternalspeakerjackPower inputconnectorAntennaconnector