Radio Calypso 1620 Khz Radio Calypso is on 1620 Khz at 2128 Utc with SINPO 33322. Later at SDR Twente in the Netherlands 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