The UM385 radio is a waterproof DSC marine radio with distress call and voice distress call functions.
The UM385 is a waterproof DSC marine VHF radio from Uniden. Its owner's manual explains how to make voice and automatic distress calls, use Digital Selective Calling (DSC) with MMSI numbers, scan and monitor channels, and watch NOAA weather alerts. It also covers normal, scan, and weather modes, channel selection, and transmitter power selection from 1 to 25 watts.
Later sections describe mounting the radio, connecting the antenna, power, and accessory cables, and interfacing with a GPS or chartplotter. The manual includes radio specifications, marine channel and weather channel charts, NMEA 0183 operation, regulatory and safety warnings, antenna selection guidance, and a three-year limited warranty.
| Waterproof rating | IPX4 (resistant to rain or splashing water) |
|---|---|
| Transmit power | Selectable from 1 watt to 25 watts |
| Power supply | Nominal 13.8 VDC, 10.5 VDC to 16.0 VDC, negative ground |
| Channels | All marine VHF channels for the U.S., Canada, and international waters |
| Channel 16 frequency | 156.8 MHz |
| Antenna connector | Male PL259 (SO238), 50 ohm impedance |
| DSC class | Class D |
Lift the red cover and press and hold the DISTRESS button for three seconds. The radio then transmits your boat's location every few minutes until you receive a response.
It is a unique nine-digit number that identifies you and your boat when making DSC calls, and is also used by the Coast Guard for automated distress calls.
The package includes the VHF marine radio, mounting bracket and knobs, microphone, mounting hanger and hardware, DC power cable, and accessory cable.
Press the 16/9-TRI button on the microphone to go to Channel 16 (156.8 MHz); press it again if the display does not show 16.