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rodriguezbarbaraJul 30, 2025
Why does my Uniden MHS235 speaker always make noise?
- JJessica GordonJul 31, 2025
If noise constantly comes from the speaker of your Uniden Marine Radio, the squelch level is likely too low. Try adjusting it.
Why does my Uniden MHS235 speaker always make noise?
If noise constantly comes from the speaker of your Uniden Marine Radio, the squelch level is likely too low. Try adjusting it.
What to do if the Uniden MHS235 charger power LED doesn't turn on?
If the power LED on the charger of your Uniden Marine Radio doesn’t turn on, avoid using the charger when the ambient temperature is below 0° C (32° F) or above 45° C (113° F). Ensure the charging contacts on both the radio and charger are clean. If the issue persists, try replacing the battery.
What to do if my Uniden MHS235 won't transmit?
If your Uniden Marine Radio won't transmit, ensure you're not in Weather or Scan mode. Also, verify that you're not attempting to transmit on a receive-only channel or using the incorrect power level for the current channel. Check the battery level and charge it if it's low before transmitting. Finally, make sure each transmission lasts less than 5 minutes.
Why is the display flashing on my Uniden Marine Radio?
If the display on your Uniden Marine Radio flashes, it might be because the radio is in a Watch or Scan mode. Try turning off scanning, Weather Alert Watch, Triple Watch, or Dual Watch.
Why can't anyone hear me on my Uniden Marine Radio?
Check your UIC channel settings on your Uniden Marine Radio. The area you are in might use different channel assignments.
General| Type | Handheld VHF Marine Radio |
|---|---|
| NOAA Weather Channels | Yes |
| Floatation | Yes |
| Display | LCD |
| Power Output | 1W / 5W |
| Battery | Lithium-Ion (Rechargeable) |
| Waterproof Rating | IPX7 |
| Battery Life | 12 hours (approx.) |
Step-by-step guide to making a distress call via voice.
Overview of the radio's key capabilities and design.
Explanation of the LCD display elements and icons.
Guide to navigating and using the radio's menu system.
Options for radio setup and basic functions.
Settings for physical aspects like backlight and contrast.
Technical requirements for DSC operations and call types.
Parameters for Digital Selective Calling (DSC) setup.
Configuration options for the GPS module.
Basic mode for monitoring a single channel and communicating.
Monitoring multiple saved channels automatically.
Monitoring NOAA weather channels for alerts.
Instructions on how to connect the antenna to the radio.
Steps for inserting the rechargeable battery pack.
Procedure for powering the radio on and off.
Guide to programming the unique MMSI number into the radio.
Automatic acquisition and saving of GPS coordinates.
Adjusting the speaker volume level.
Adjusting the squelch to filter background noise.
Locking the keypad to prevent accidental changes.
Enabling weather alert monitoring.
Steps for transmitting audio over the selected channel.
Adjusting the transmit power output (1W, 2.5W, 6W).
Explanation of Digital Selective Calling and its purpose.
Overview of advanced DSC functions like calls and logs.
Guide to programming the unique MMSI number into the radio.
Steps to program a group MMSI number.
Steps to program individual MMSI numbers into the directory.
Types of DSC calls and how to initiate them.
Procedure for sending an automated distress call.
Procedure for cancelling an active automatic distress call.
How the radio handles incoming DSC calls.
Viewing the history of received calls.
Procedure for performing radio test calls.
Configuring how the radio responds to incoming test calls.
Setting the radio to automatically send its position.
How to request the position of another vessel.
How to transmit your current position to another station.
Steps to place the radio in standby mode.
Turning off automatic channel changes for DSC calls.
General explanation of GPS system functions.
Saving and recalling GPS positions or manual coordinates.
Wiring instructions for connecting to a chartplotter.
Customizing channel names for easier identification.
Answers to frequently asked questions and basic troubleshooting.
General technical specifications of the radio.
Technical specifications related to the transmitter.
Technical specifications related to the receiver.
List of US marine channels, frequencies, and uses.
List of Canadian marine channels, frequencies, and uses.
List of international marine channels, frequencies, and uses.
List of NOAA weather channels and their frequencies.
Information on legal operation and channel usage.
Fundamental rules for marine radio communication.
Information regarding radio frequency (RF) exposure compliance.
Warnings and precautions for handling the Li-Ion battery.
Details of the warranty coverage and terms.
