Radio Underground Tentative Radio Underground is on 6305 Khz at 2045 Utc with SINPO 23322. Plays Summermeeting-promo and some music. 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