Marconi's First Radio Transmissions Across Water

1897 1947 NEAR THIS SPOT THE FIRST RADIO MESSAGES WERE EXCHANGED ACROSS WATER BY GUGLIELMO MARCONI AND GEORGE KEMP BETWEEN LAVERNOCK AND FLAT HOLM 11th MAY, LAVERNOCK AND BREAN DOWN 18th MAY 1897   ERECTED BY THE ROTARY CLUB OF CARDIFF 1947   Submitted by: Alistair Wylie