The necessity of email and weather information on board is often the beginning of skipper's interest in radio communication and data transfer via short wave radio. Captain Marti Brown knows his cruisers and  explains everything, from the basics of SSB radio, detailed ways of installation of the single elements to more advanced functions like the weather grib files in a very comprehensive way.  For everybody, who wants to go cruising with a PACTOR, this book is of unbeatable value to solve problems in places where no help can be found.