The telegraph and telephone preceeded Radio but as with other earlier inventions - without it - the progression to wireless could not have happened.
Beginning as far back as 1891, Dr. G.P. Hachenburg spent years trying to convince people that “musical telegraphy” – musical instruments operated long distance by telegraph – was the wave of the future. It was not.*
(*For more, see: United States Early Radio History by Thomas H White)
