<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><DIV>Put me on the list as interested in the USB Hermes bare board.</DIV>
<DIV> </DIV>
<DIV>73,s<BR><BR>--- <B>10年8月9日，周一, Dan Habecker <I><dan.habecker@gmail.com></I></B> 写道：<BR></DIV>
<BLOCKQUOTE style="BORDER-LEFT: rgb(16,16,255) 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px"><BR>发件人: Dan Habecker <dan.habecker@gmail.com><BR>主题: Re: [hpsdr] Hermes Beta boards.<BR>收件人: hpsdr@lists.openhpsdr.org<BR>日期: 2010年8月9日,周一,上午9:21<BR><BR>
<DIV class=plainMail>***** High Performance Software Defined Radio Discussion List *****<BR><BR></DIV>
<DIV id=yiv820939087>
<DIV><BR></DIV>
<DIV>Put me on the list as interested in the USB Hermes bare board.</DIV>
<DIV><BR></DIV>
<DIV>Also maybe I can offer some help on the layout changes.</DIV>
<DIV><BR></DIV>
<DIV>73,</DIV>
<DIV>Dan W9EQ</DIV><BR><BR>
<DIV class=yiv820939087gmail_quote>On Sun, Aug 8, 2010 at 3:05 PM, Kjell Karlsen <SPAN dir=ltr><<A href="http://cn.mc924.mail.yahoo.com/mc/compose?to=la2ni@online.no" rel=nofollow target=_blank ymailto="mailto:la2ni@online.no">la2ni@online.no</A>></SPAN> wrote:<BR>
<BLOCKQUOTE style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class=yiv820939087gmail_quote>***** High Performance Software Defined Radio Discussion List *****<BR><BR>Hi Phil.<BR><BR>First, I wonder if you have received my e-mail where I commented the Hermes Gamma Schematics? I have not received any reaction from Tony on that e-mail. It is very important that the construction of the SMPSU is made according to the original construction to be sure the results are the same. I also think we must be sure the grounding is done in a proper way on the rest of the board.<BR><BR>I listened to the last teamspeak and heard that Jeremy (I think it was) suggested that we give the HPSDR community all infos for the Beta PCB磗 and all measured data on the present board so that people that want it can make there own Hermes with USB interface.<BR><BR>To make more PCB without modifying it is not a way to go. The spurious radiation from the
TX is all to high and the modifications I made are to time consuming to be advisable.<BR><BR>I think it might be possible to modify the layout and get a working Hermes with quite good performance just by removing the Power layer and replace it with a continuous Ground Plane. The power routing can be moved to the other layers. All critical tracks have to be moved and by improving the decoupling following my advice I think the results will be much better.<BR><BR>If someone want to do that it might be some interest by experimenters to buy just PCB磗. Making a list first to see how many that are interested and then decide what to do might be possible. I do not think there are many that will do it, but you never know!<BR><BR>I will follow the "LAN road" myself but I can assist if someone want to develop the USB further.<BR><BR>73, Kjell<BR>_______________________________________________<BR>HPSDR Discussion List<BR>To post msg: <A
href="http://cn.mc924.mail.yahoo.com/mc/compose?to=hpsdr@openhpsdr.org" rel=nofollow target=_blank ymailto="mailto:hpsdr@openhpsdr.org">hpsdr@openhpsdr.org</A><BR>Subscription help: <A href="http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org" rel=nofollow target=_blank>http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org</A><BR>HPSDR web page: <A href="http://openhpsdr.org/" rel=nofollow target=_blank>http://openhpsdr.org</A><BR>Archives: <A href="http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/" rel=nofollow target=_blank>http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/</A></BLOCKQUOTE></DIV><BR></DIV><BR>-----下面为附件内容-----<BR><BR>
<DIV class=plainMail>_______________________________________________<BR>HPSDR Discussion List<BR>To post msg: <A href="http://cn.mc924.mail.yahoo.com/mc/compose?to=hpsdr@openhpsdr.org" ymailto="mailto:hpsdr@openhpsdr.org">hpsdr@openhpsdr.org</A><BR>Subscription help: <A href="http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org" target=_blank>http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org</A><BR>HPSDR web page: <A href="http://openhpsdr.org/" target=_blank>http://openhpsdr.org</A><BR>Archives: <A href="http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/" target=_blank>http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/</A></DIV></BLOCKQUOTE></td></tr></table><br>