Simplify the following text for a Grade 10 native English-speaking person.
Original: Opt-out stations were established in Inverness ( BBC Radio Highland ) on 25 March 1976 , followed by Radio Aberdeen in April 1976 , BBC Radio Orkney and BBC Radio Shetland in May 1977 , Selkirk ( BBC Radio Tweed ) on 11 April 1983 and Dumfries ( BBC Radio Solway ) on 16 April 1983 . Only the Orkney and Shetland stations still exist ; the others had all closed by the early 1990s and are now served by Radio Scotland with four opt-out news bulletins a day .
Simplified: Opt-out stations were established in Inverness and Aberdeen in 1976 , followed by Orkney and Shetland in 1977 , and Selkirk and Dumfries in 1983 .