Everything you need to know about Handheld DSC Radios
With more small boat owners, kayakers, jet-skiers and paddleboarders taking to UK waters, marine safety authorities and regulatory bodies strongly advise the use of radios with Digital Selective Calling (DSC) technology. This is because portable VHF/DSC radios serve as a dedicated line to emergency services and nearby vessels whilst also being waterproof and buoyant - making them a safer choice than mobile phones.
In this article, we go through some of the integrated features of VHF/DSC radio systems and how to utilise them for improved safety on the water.
Emergency Alerts
Distress Button: DSC handhelds feature a red emergency button protected by a spring-loaded cover to prevent accidental activation, ensuring help is only a single, deliberate press away. Once pressed and held for 3 seconds, an emergency distress signal is sent to the Coastguard and nearby DSC-equipped vessels.
Digital Signalling:
Using digital bursts rather than voice alone means that DSC radios can cut through interference, reaching rescue agencies even when voice transmissions are undetectable.
Group Communication Features
Focused Monitoring: Channel 16 often consists of general radio chatter and automated alerts, meaning that standard voice calls with a VHF radio can easily get lost in the mix. DSC radios offer group calling with digital alerts, allowing you to listen to channel 16 without missing important transmissions from your listed contacts.
Digital Paging: MMSI numbers can be stored in your address book so that when you 'call' them, the radio will alert the user before automatically switching you both to a private channel.
Group Position Polling: With a few button presses, you can request the GPS coordinates of every radio in your group. Their locations will appear on your screen, making it much easier to track each others position regardless of bad weather or changing course.
Licensing and RegulationsRadios bought in the UK can be used throughout Europe, however Ofcom licensing information is only shared within UK territorial waters (within 12 nautical miles).
The MMSI Number: Handheld DSC units have a unique MMSI format because they can be moved from ship to ship. Do not program them with a fixed ship's MMSI.
How to License: Add "VHF DSC handheld" to your equipment list on the Ofcom website.
(online licenses are free).
Important Notes
GPS Tracking: DSC does not provide continuous tracking. If the other vessel is moving, you must make multiple position requests to stay updated.
International Use: Guidance regarding MMSI programming may vary outside the UK. Always check with local governing bodies when abroad.
If you would like to know more about our DSC Handheld VHF radio, please visit our
IC-M94DE VHF/DSC product page.
Alternatively, you can email us at
sales@icomuk.co.uk.
*Guidance may be different in other countries. Please check your governing body for more information.
