On Mon, 4 Dec 2017 23:13:02 +0100, <fortra at siol.net> wrote: >check QEX June/July issue >for 2KW-linear maplifier by Saulo Py2KO. That would be the 2006 issue: http://www.813am.qsl.br/artigos/py2ko/burrico/quaggi.pdf