Baltic Sea Radio 21550 Khz Baltic Sea Radio is on 21550 Khz LSB-mode at 0935 Utc with SINPO 34444. Email-address is balticseapirate(at)gmail.com. 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