Radio Marconi 6405 Khz Radio Marconi is on 6405 Khz at 1338 Utc with SINPO 34433 in United Kingdom. Few seconds later sign off. Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Click to email a link to a friend (Opens in new window) Email Click to print (Opens in new window) Print Related