Explains how ham radio gives the advantages of a single-sideband system at a fraction of the cost. This book helps readers learn how to use radio for voice or Morse code communications, check and send e-mail, link up with on-shore signal repeaters to extend their range, and make personal phone calls[...]
The new digital Global Maritime Distress and Safety System (GMDSS) is revolutionizing emergency communications and international search-and-rescue at sea. Clearly and concisely, this one-of-a-kind guide presents what you should know about using digital marine radios for emergency assistance and enha[...]