I see now that the author of this mod is the present ARRL CEO David Sumner K1ZZ under his former callsign K1ZND. On 11/6/2012 0951, Al Parker wrote: > Thanks to Rodger & Bob, > I've also found the article in my 1974 Hints & Kinks mag. It does also > use the matching xfmrs from the T-4X for proper matching. > 73, > > Al, W8UT