Radio Marconi 6450 Khz Radio Marconi is on 6450 Khz at 2115 Utc with SINPO 43433. Later moved to 6425 Khz at 2130 Utc with SINPO 23333. Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Email a link to a friend (Opens in new window) Email Print (Opens in new window) Print Related