Radio Underground 6295 Khz Radio Underground is on 6295 Khz at 2047 Utc with SINPO 23333. Better heard at SDR Twente SINPO 24333 at 2105 Utc: 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