CQ May 1959 had 2 articles, The S-9er, which delt with converting the first rf stage to cascode, and Updating the SX-28, which covered the IF stage mod, voltage regulation etc. Lloyd Godsey KK7IZ 1315 N. Udall Circle Mesa, Az 85203 1-480-620-7145 (cell) Please visit my web page http://members.cox.net/kk7iz/kk7iz/index.htm kk7iz at cox.net