E-6 Uniden MHS75 Radio Owner’s ManualHow It WorksThe MHS75 radio has three main operation modes: normalmode, scan mode, and weather mode.Mode What it does Use it when youwant to...:To turn iton/offNormalmodeMonitors a single marinechannel and lets you talkon that channel.Monitor a channel ortalk to another radio.(defaultmode)ScanmodeMonitors all the channelsyou save into memory.Check a small groupof regularly-usedchannels for traffic.Press Scan-Dual.WeathermodeMonitor the selectedNOAA weather channel.You want to hear thecurrent or forecastedweather.Press WX-Alert.In addition to the three operation modes, the MHS75provides four different watch modes which you can activateduring any operation mode. In the watch modes, the radiobriefly checks for activity on a specific channel, then returnsto its previous operation.Watch mode What it does To turn it on/offWeather AlertWatchChecks the last-used weatherchannel for hazard alertsevery 7 seconds.Press and hold WX-Alertfor 2 seconds.Dual Watch Checks channel 16 for activityevery 2 seconds.Press and hold Scan-Dual for 2 seconds.Triple Watch Checks channels 16 and 9 foractivity every 2 seconds.Press and hold 16/9-Trifor 2 seconds.Quad WatchChecks channels 16 and 9 foractivity every 2 seconds, andchecks the last-used weatherchannel every 7 seconds.Turn on Triple Watch,then turn on WeatherAlert Watch.Note: Private boats must monitor channel 16 when-ever they are underway. Water-going vessels shouldhave either Triple Watch or Dual Watch on at all times.