Unknown Radio 6256 Khz Unknown Radio is on 6256 Khz at 2234 Utc with SINPO 24333. Email-address unknownradio@hotmail.com. 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