17CODE SQUELCH (ID CODE)Code Squelch is enabled or disabled by your dealer. This function turns thetransceiver squelch OFF only when it receives the DTMF ID code that has beenset up in your transceiver. Transceivers that do not transmit the correct code willnot be heard. Consequently, you can communicate with a specific party withoutlistening to other parties using the same channel.Your dealer may also activate Group Call for your transceiver. This is usefulwhen you want to send information to a number of units in a fleet. Ask yourdealer for details.Note: Code Squelch cannot be used on this transceiver if Selective Call {page 18} or DTMF NumberDisplay {page 28} have been programmed.RECEIVINGWhen you receive a signal containing the correct ID code, the squelch opensand you will hear the call.• The icon (TK-7160/ TK-8160) appears on the display and blinks.• The TX/RX indicator flashes orange.• To mute the speaker after the squelch opens, press the key programmed as Monitor.• Your dealer can program the transceiver to mute the speaker after a specified timeperiod elapses.• If Transpond is programmed, an acknowledgment signal is returned to the callingstation. Transpond does not function when you are called with a Group code.Transpond can send an alert tone, a transceiver ID code, or autodial memory locationnumber 1 (refer to “S TORING DTMF N UMBERS ” on page 14).• If Call Alert is programmed, an alert tone will sound when the correct ID code isreceived.TRANSMITTING1 Press and hold the microphone PTT switch.2 Enter the ID code of the transceiver you want to call or enter a Group code onthe microphone keypad.3 Use the transceiver the same as in a regular call; press the microphone PTTswitch to transmit and release it to receive. Your dealer can program yourtransceiver with the following additional features:• The icon (TK-7160/ TK-8160) appears on the display.• When you release the microphone PTT switch, the squelch opens. If no signal isreceived for a pre-determined time, the speaker will mute.• Pressing the key programmed as Monitor at any time will mute the speaker.