Collins R390A Video #1 - Repair and Quick Tune Up
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Collins R390A Video #1 - Repair and Quick Tune Up
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The Collins R-390A /URR 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-390 had done its job so well that the Corps decided continued use of this type of receiver necessitated an improved, reduced-cost version. There are many references to the R390A in the open literature during this period; a picture of the receiver appeared in the May 1959 issue of QST. The total pr
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