11. The ideal arrangement is to have a teleprinter communicating between the two rooms. 12. Messages were sent to and fro across the Atlantic by enciphered teleprinter links. 13. These commands would then be automatically sent to the defence site via teleprinter . 14. Teleprinters linked the radio stations with SOE's HQ in Baker Street.15. Teleprinters could use a variety of different communication media.16. Earlier teleprinters had three rows of keys and only supported upper case letters. 17. These units had permanent teleprinter links to Bletchley Park. 18. Equipment at the Molonglo station included teleprinters for use when reception was good. 19. Messages were sent to and from across the Atlantic by enciphered teleprinter links. 20. YUSCII was originally developed for teleprinters but it also spread for computer use.