Example image of eyePlorer eyePlorer map for 'Poldhu': Cornwall England The Lizard United Kingdom Goonhilly Downs Mullion, Cornwall Porthleven Cornish language 1901 December 12 Guglielmo Marconi Radio Signal Hill, Newfoundland and Labrador St. John's, Newfoundland and Labrador John Ambrose Fleming September 17 Beirut Cape Verde Charles Samuel Franklin Shortwave National Trust for Places of Historic Interest or Natural Beauty Telent Cape Cod Massachusetts Cabot Tower (Newfoundland) Sasso Marconi Fleming valve Marconi Station Telecommunication Timeline of St. John's history Transatlantic Timeline of radio Cape Breton Island Burton upon Trent Telegraphy Helston List of firsts Porthcurno Invention of radio South West Coast Path Media in Cornwall Ionosphere