Freeview viewers in parts of Argyll may need to re-tune their TV equipment on Wednesday September 19 to continue watching some programmes.
Some Freeview channels are moving to new airwaves to allow for the development of new mobile broadband services.
Transmitters aThected include a number in the central belt as well as Millport and Tighnabruaich. Further changes will take place at transmitters in parts of Scotland on Wednesday October 3. On-screen messages will advise people of the re-tune date for their transmitter.