On Mar 25, 2014, at 1:46 PM, SHELLY199 at aol.com wrote: > > Does anyone know of the source for this mod? One such mod is found in Hollow State News issue 52 Spring, 2001, page 2: “A Solid State Voltage Regulatorfor the R-390 (non-A)” by Dr. Gerald N. Johnson, K0CQ Roy Roy Morgan RoyMorgan at alum.mit.edu K1LKY Since 1958