For several years, Sea Tow operated an Automated Radio Check System, which was available on VHF
Channels 24 to 28 for the benefit of mariners in over 130 locations. However, on October 2nd, 2020 that service
The U.S. Coast Guard continues to offer an automated Digital Selective Calling (DSC) Test Call capability using the DSC (Red Button) function on your fixed-mount, on-board VHF radio. For instructions on using this function, please click HERE.
All over-the-air radio check calls should be made on VHF channel 09, not on channel 16. Channel 09, is designated by the FCC as a boater’s calling channel.