These calls are mainly via VHF marine radio or cell phone.

First of all, I did call for help, but on the VHF radio.

However, a length of 250 feet would not likely be used for 2m VHF radios.

It later transpired he did not have a working VHF radio on board his boat.

Then contact was established over a VHF radio which had a range of 200 nautical miles.

The engineer used his tools to remove the VHF radio from the truck.

He turned on his VHF radio and listened to the weather report.

VHF radio is used to maintain communication with the surface.

To prevent competitors from talking to one another during the race, VHF radios are not allowed.

With his VHF radio he reported the discovery to the police.