Hello World takes us on a 70-year odyssey through the world of ham radio. From 1927 until his death in 2001, operator Jerry Powell transmitted radio signals from his bedroom in Hackensack, New Jersey, touring the world's most remote locations and communicating with people from Greenland to occupied Japan. Once he made contact with a fellow ham operator, he exchanged special postcards-known as QSLs-with them. Powell collected hundreds of these cards for seven decades, documenting his fascinating career in amateur radio and providing a dazzling graphic inventory of far-flung places and people.Hello World is an introduction to the fascinating world of ham: there are over two million operators worldwide, including Walter Cronkite and Priscilla Presley. The book is also a visual feast for anyone interested in the universal language of graphic design.Gregory, Danny is the author of 'Hello World A Life in Ham Radio', published 2003 under ISBN 9781568982816 and ISBN 156898281X.