Sonic Radio 6390 Khz Sonic Radio is on 6390 Khz at 2035 Utc with SINPO 34333. Later QSY to 6375 Khz. 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