PTT Voice Mirrors (Part 3): Circa 1970's

Many thanks to SRAA contributor, Dan Greenall, who shares the following recording and notes:Broadcaster: PTT voice mirrors from the 1970's Part 3Frequency: variousRecption location: Ancaster, Ontario, CanadaReceiver and antenna: Hallicrafters S-52 using a longwire antennaMode: Single Side BandNotes: Point to point stations were commonly found on shortwave in the 1970's outside of the normal SWBC bands. They could often be heard transmitting a repeating test message so a receiving station could tune them in prior to conducting radiotelephone traffic.1.  U.S. Army radio station ACA, Panama Canal Zone2.  Oostende Radio, Belgium3.  PTT, Dakar, Senegal4.  Reugen Radio, German Democratic Republic5.  Venezuelan Telephone Company, Caracas6.  French Telecommunications Service, Djibouti7.  British Post Office Phototelegraph Network (no location given)8.  Canadian Overseas Telecommunications Corporation,       Yamachiche, Quebec9.  ENTEL, Bogota, Colombia10.  Belgian Telegraph and Telephone Administration, Brussels11.  British Post Office, London, England12.  France Cables and Radio Company, Fort Lamy, Chad13.  PTT, Blantyre, Malawi14.  East African External Telecommunications Company Limited,        Nairobi, Kenya15.  International Telecommunications Corporation, Abidjan, Ivory Coast16.  Office Congolais des Postes et Telecommunications, Kinshasa,Democratic Republic of the Congo