39Basic OperationsReceiving3 Press .The display switches to VFO mode and returns to the previous receive frequency.Selecting communication modeThe FTM-100DR transceiver is equipped with the AMS (Automatic Mode Select)function which automatically selects from 4 modes of transmission corresponding to thesignal being received.The transmit mode is selected according to the received signal so that C4FM digitalsignals, and analog signals are received and transmitted automatically.Press to display “▀○○*” on the screen.*The display differs depending on the received signal.Display example when in AMS modeTo operate in fixed communication mode, press to switch the communication mode.Each time is pressed, the communication mode changes in the following order:“ (AMS)”→“DN (V/D mode)”→“VW/DW (FR mode)”→“FM (analog)”Operation mode Icon Description of modesAMS(Automatic Mode Select)▀○○ Transmission mode is automatically selected from 4 types accordingto the signal received.(“○○” icon differs depending on the received signal.)The AMS function operation can be changed from the Setup menusetting. See “Setting the transmission mode when using the AMSfunction (3 AMS TX MODE)” on page 125.V/D Mode(Voice/Data simultaneoustransmission mode)DN Calls are less prone to interruptions due to detection and correctionof voice signals during digital voice signal transmission. This is thestandard mode for C4FM Digital.Voice FR Mode(Voice Full Rate Mode)VW Digital voice data transmission using the entire 12.5 kHz band.Enables high-quality voice communication.Data FR Mode(High Speed DataCommunication Mode)DW High speed data communication using the entire 12.5 kHz band.The transceiver automatically switches to this mode during imagetransmission.Analog FM Mode FM Analog communication using FM mode.Effective when the signal is weak and audio is susceptible tointerruption in digital mode.Cautionsz In V/D mode (“DN” on the screen), location information is included in the transmitted signal duringvoice communication, however, location information is not included with the Voice in the FR mode(“VW” on the LCD).
