47 48--Info. ModeIt will display the selected ship information such as COG, SOG, etc.All other button’s press will result in an error beep8. RT-650-M Wireless MicrophoneoptionThe optional RT-650-M 2.4GHz wireless Microphone remotely controls theNAVICOM Marine radio and provides an optional intercom function, which isthe next generation in wireless handheld microphones, compatible with newNAVICOM radios. It combines state-of-the-art technology with ruggeddurability and ease of use. The microphone’s all solid-state design andconservatively-rated components and materials make it an ideal choice forharsh marine environments. The microphone’s large display and backlitcontrol buttons make it easy to use even in extreme lighting and weatherconditions. You should read the rest of this Owners Manual thoroughly toacquaint yourself with all of your microphone’s features and functions.8.1 LOOK AT THE MICOPHONE① VOL/ PWR Hold down for 2 seconds to turn on or off; Briefly pressto select the volume setting mode.② BAND / SAVE Press to select band (USA. Or INT ).Hold down to set memory channels.③ CANCEL Press to Cancel last selection or change without savingor step back one level on menu mode. Or cancels DSCDistress calls & auto-retransmission of DISTRESScalls.④ DSC / MENU DSC calls Menu / Radio Setup Menu⑤ ENT / WATCH Enter Values / Start or Stop Dual or Tri WatchPress and hold the button to start Dual-watch; Duringwatch mode, press the button to switch between Dualand Tri-watch; Press and hold the button again toescape from watch mode.