The R-390A /URR is a general coverage HF radio communications receiver designed by Collins Radio Company for the United States Armed Forces. == History == The R-390A military shortwave radio receiver was the result of a project undertaken by the United States Army Signal Corps in 1954 to replace the existing R-390 receiver then in use.
The R-390A /URR is a general coverage HF radio communications receiver designed by Collins Radio Company for the United States Armed Forces. == History == The R-390A military shortwave radio receiver was the result of a project undertaken by the United States Army Signal Corps in 1954 to replace the existing R-390 receiver then in use.
Source: Wikipedia "R-390A" · CC BY-SA 4.0
Share this article: X · Bluesky