Sandford Mill's annual open day event to mark International Marconi Day will take place on Saturday 25th April.
Access to the Engine house and Barn which store our industrial heritage displays, the historic 1922 Marconi broadcasting hut and our Marine Radio cabins dating from 1900's to 1960's.
Talks, demonstrations and live radio transmission form Chelmsford Amateur Radio Society
Morse key display and demonstrations
Marconi TV camera demonstrations
Essex Historic Military Vehicle Association