I have an ARC-2 and have never used it once. I am wondering if anyone has tightened up the IF coupling caps like could be done on the ARR-15.

If a decent specimen comes my way,  I intend to do that according to an article in the June 1963 issue of 73 magazine.  Since images aren't allowed here, anyone interested will have to download the article from the 73 magazine archive.

73, Bob W9RAN