Guglielmo Marconi May 13, 2022 3:06:03 GMT Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Admin on May 13, 2022 3:06:03 GMT VIA: The History of WalesOn 13th May 1897 radio pioneer Guglielmo Marconi made history by transmitting a radio signal from Flat Holm to Lavernock Point in the Vale of Glamorgan.