Readme.txt for VNA.zip VNA.zip contains files pertaining to "A Low-Cost 100 MHz Vector Network Analyzer with USB Interface," by Tom McDermott, N4EG, and Karl Ireland, (QEX, Jul/Aug 2004, pp 3-14. At the time this was posted, the author's e-mail was N4EG@arrl.net. The files you have downloaded are c++ source files for he host and target devices of a USB interface. Contact the article author for more information. 73, Bob, KU7G ????date Robert J. Schetgen, KU7G/1 Senior Assistant Technical Editor American Radio Relay League, 225 Main St, Newington, CT 06111-1494 ph: 860-594-0277 (direct) fax: 860-594-0259 e-mail: rschetgen@arrl.org QST Team * Hints & Kinks Editor * QEX Managing Editor Have you seen the new QEX? Wow! Check it out at http://www.arrl.org/qex/.