Baltic Sea Radio 6900 Khz Baltic Sea Radio is on 6900 Khz LSB-mode at 2145 Utc with SINPO 34433 in the Netherlands. Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Click to email a link to a friend (Opens in new window) Email Click to print (Opens in new window) Print Related