I've posted N1UL's (Ulrich) Norton amplifier PDF's to the HPSDR wiki at: http://hpsdr.org/wiki/index.php?title=ANCILLARY Please note that the 3 PDF files total about 7 MB of downloading. If anyone has software and expertise to reduce the file size of these three pages (PDF files) for faster downloading or inline viewing, please email me. Don AE5K