The one-day RYA SRC/VHF Radio course teaches the basics of VHF radio operation, the correct frequencies (channels) to be used and distress, emergency & medical assistance procedures. We use real radio equipment rather than computer simulators so you can become confident in using the various controls and DSC (Digital Selective Calling) functions. The VHF radio network has undergone great change with the implementation of the Global Maritime Distress System (GMDSS.) and these changes are discussed in depth.