Zender Digital 6240 Khz Zender Digital is on 6240 Khz at 1617 Utc with SINPO 24333 at SDR Twente. Also heard at own RX SINPO 44333 at 1629 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