MARS: Global Radio Communications Network: A nice vintage film excerpt showing the “MARS Military Auxiliary Radio System” as it was in 1970. Film quality is fairly good, lots of HAM and Military communications equipment, including 1960’s era COLLINS radio transceivers (transmitters, receivers, vacuum tube units), Civilian HAM Radio Operators and Military personnel (Army, Air Force). Shows MARS radio network in operation, providing California, USA to Vietnam voice radio communication via MARS system telephone patch technology.
Radio experts will see recognize a variety of vintage equipment and external antenna arrays.
For many years, the dedicated individuals of the MARS program have provided invaluable service to thousands of people during military operations, times of humanitarian need during natural disasters. This short overview is dedicated to their service. Provided for historical and educational purposes.


MARS was Renamed:
"Military AUXILIARY Radio System," and assigned to the Headquarters, United States Army Network Enterprise Technology Command (NETCOM).

The MARS program has evolved over time.
For current information on MARS programs visit these sites:

U.S. Army Military Auxiliary Radio System
https://netcom.army.mil/mars/

U.S. Air Force Military Auxiliary Radio System
https://www.mars.af.mil/



Here is some additional History:
https://w6trw.com/wpcontent/uploads/...


Other sites of interest:

Collins Radio Association
http://collinsra.org/home/


An "Collins Collectors Club"
http://www.collinsradio.org/

Collins KWM2 radio specifications
http://www.radioing.com/collins/tr01....

“Collins Radio Company history” by “Electronics Notes”
https://www.electronicsnotes.com/art...

The title of the original film is “A Visit to MARS,” 1970, a Department of Defense film