<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Looks like he is using 600uH chokes on Vcc and ground pins of the USB connector for EMI protection. Also on the DB25 and audio.<div class=""><br class=""></div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On May 4, 2016, at 5:20 AM, Skyler F <<a href="mailto:electricity440@gmail.com" class="">electricity440@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Does anybody know what the "600" means on the schematic of the USB radio interface where it shows the inductors for the GPIO and audio lines? Does this mean 600uH, 600nH, 600 ohms @ 100Mhz or what?<br class=""><br class=""><a href="http://www.dmkeng.com/images/URIx%20Schematic.pdf" class="">http://www.dmkeng.com/images/URIx%20Schematic.pdf</a><br class=""><br clear="all" class=""><div class=""><br class="">73,<br class=""></div><div class="">Skyler KDØWHB<br class=""></div></div></div></blockquote></div><br class=""></div></body></html>