In the 1920s...a long-distance telephone call can take hours.  An overseas call is not possible at all.  But there is a new invention, called wireless radio, that permits instant communication over long distances.

An excited young boy—a licensed amateur radio operator—puts on his earphones and slowly turns a dial on his radio receiver, waiting to hear some electronic sounds—dots and dashes in Morse code—that make up a message.  He then taps out his reply.

In this book, Lynne Barasch tells the story of one boy and how he became an amateur radio operator just for fun, but also got to use his skill for something more important.

From the dust jacket