PTT Voice Mirrors (Part 1): 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 1Frequency: 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. These recordings were all made at Ancaster, Ontario, Canada, using either a Hallicrafters S52 or Realistic DX150A receiver hooked up to a long wire antenna.1.  Australian Overseas Radiotelephone Service, Sydney2.  Reykjavik Radio, Iceland3.  Moscow Radio Telephone Station, USSR4.  Radio Telephone Station, Warsaw, Poland5.  Overseas Station Berlin, German Democratic Republic6.  Yugoslav Telegraph and Telephone Administration, Belgrade7.  Swiss Telegraph and Telephone Administration, Bern8.  ITALCABLE, Rome, Italy9.  Netherlands PTT, Amsterdam10.  Cyprus Telecommunications Authority, Nicosia11.  Cairo Radio Telephone Terminal, Arab Republic of Egypt12. PTT and Radio Administration, Tel Aviv, Israel13. Saudi Arabian Post, Telegraph and Telephone Administration, Jeddah14.  Moroccan Radio Electrical Centre, Rabat15.  Companhia Portuguesa Radio Marconi, Luanda, Angola16.  RCA Global Communications, New York City17.  France Cables and Radio Company, Lome, Togo18.  Zambian Post Office, Lusaka