RPV516/RPU416 Brief Introduction- 2 -Brief Introduction1. ModeUser mode: Turn on the power to enter the mode.PC mode:Set and adjust radio data with PC software or programmer in this mode.2. Parts description:(1) Antenna(2) Channel (frequency) selector knobTurn the knob to choose channel from 1 to16 (Channel 16 can be set by the dealer as scanfunction).(3) LED indicatorRed LED glows while transmitting; green LED glows while receiving; red LED flashes when thebattery voltage is lower than the preset while transmitting.(4) Power /Volume control knobTurn the knob clockwise to turn on the power; turn the knob counter clockwise to turn off the power.After the power is turned on, turn the knob to adjust the volume level.(5) Speaker(6) Microphone(7) PTT (push to talk)To transmit, hold down PTT and speak into the microphone; to receive, release PTT.(8) Monitor keyPress the key to open squelch; release to close squelch.(9) Speaker/microphone jack(10) Belt clip(11) Battery