Joseph Peter Astbury

Joseph Peter Astbury was commissioned into the Royal Corps of Signals and was responsible for many of Phantom's adaptations to Wireless Sets used by the organisation and created the Morsex Machine. This publication is about his service and is divided into two parts. The first part is a biographical account based on documents from the National Archives at Kew and a first hand account of a member of Phantom. The second part is a detailed study of the Morsex machine that he designed for secure communications. The information from this part came from the Archives of GCHQ as well as some open documents at Kew.