Studio 52 6423 Khz Studio 52 is on 6423 Khz at 1625 Utc with SINPO 34333 at SDR Twente. Also heard at SDR England SINPO 24333 at 1715 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