Many thanks to SRAA contributor, Dan Greenall, who shares the following recording and notes:

Frequency: various

Recption location: Ancaster, Ontario, Canada

Your receiver and antenna: Hallicrafters S-52 using a longwire antenna

Mode: Single Side Band

Notes:
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.  Radio Telephone Circuit, Godthaab, Greenland

2.  PTT, Papeete, Tahiti

3.  AFA, USAF Andrews Air Force Base, Maryland, USA

4.  AFI,  USAF McClellan AFB Sacramento, CA, USA

5.  Imperial Board of Telecommunications of Ethiopia, Addis Ababa

6.  Radiografica Costarricense, San Jose, Costa Rica

7.  International Radio Telephone Service, Havana, Cuba

8.  France Cables and Radio Company, Douala, Cameroon

9.  French Telecommunications Service, Noumea, New Caledonia

10.  AEZ, U.S. Army, Asmara, Ethiopia

11.  French Telecommunications Service, Fort de France, Martinique

12.  CUW, USAF Aerospace Communications Complex, Lajes AFB, Azores

13.  Malgache Republic International Telecommunications Company,

        Tananarive, Madagascar

14.  French Telecommunications Service, Pointe a Pitre, Guadeloupe

15.  France Cables and Radio Company, Niamey, Niger

16.  French Telecommunications Service, St. Pierre et Miquelon

17.  France Cables and Radio Company, Monrovia, Liberia