Yaesu FT-817 Operating Manual

Also see for FT-817 -: Brochure & specs Operating manual Technical supplement Manual Modification Instructions

36 FT-817 Operating ManualDCS OperationAnother form of tone access control is Digital Code Squelch, or DCS. It is a newer, moreadvanced tone system that is less susceptible to false triggering than CTCSS. A DCS En-coder/Decoder is built into your transceiver, and operation is very similar to that describedabove for CTCSS.1. Set the desired DCS code via Menu #23 (DCS CODE).2. Press the key momentarily, then rotate the knob, as needed, until OperatingFunction Row 4 [RPT, REV, TON] appears on the display.3. Press the (TON) key three times to activate the DCS Encoder/Decoder (the “ ”icon will appear on the display). The receiver will remain muted until a matching DCScode is received on an incoming signal.4. Press the (TON) key once to cancel DCS operation (the “ ” icon will disappear).DSC Search ScanningIn operating situations where you don’t know the DCS code being used by anotherstation, you can command the radio to listen to the incoming signal and scan in searchof the code being used.To scan for the DCS code in use:1. Press the key momentarily, then rotate the knob, as needed, until Oper-ating Function Row 12 [TCH, DCH] appears on the display.2. Press the (DCH) key to activate DCS Encoder/Decoder; (the “ ” iconwill appear on the display) and start scanning for the incoming DCS code.3. When the radio detects the correct code, it will halt on that code, and audio willbe allowed to pass.4. Press and hold in the (DCH) key for one second; the DCS code detected willbe stored as the “current” code, so it may be used for memory storage purposes,and you may now exit to normal operation.TRANSMITTER O PERATIONFM T RANSMISSION