Radio Pluto 6305 Khz Radio Pluto is on 6305 Khz at 1547 Utc with SINPO 34333. Later at 1655 Utc again on with antenna test SINPO 34433: 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