50 KHz, single channel pulse code modulation voice security equipment for use over a "N" carrier channel.The quantities shown below were issued to the following services for service trails as authorized in a former SECRET document dated June 15, 1955.
US Army - 4
USN - 4
USAF - 4
NSA - 23
COMSEC - 2
COM 6Unit cost in 1955 - $ 18,500
Does anyone have any further information on this device?
Contributors or Credits:1) https://www.nsa.gov/public_info/_files/friedmanDocuments/ReportsandResearchNotes/
FOLDER_065/41701139074046.pdf1) To Menu Page
Sept 21/15