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<DIV>Bruce:</DIV>
<DIV>Thanks. That is a good reason to disable the on board clock.</DIV>
<DIV>I do see spurious traces in the waterfall even with no antenna connected
and</DIV>
<DIV>suspect it is coming from internal Hermes noise/signals.</DIV>
<DIV>Thanks.</DIV>
<DIV>Larry K4LED</DIV>
<DIV> </DIV><FONT face="Times New Roman">Message: 6<BR>Date: Sat, 1 Dec
2012 21:07:14 -0500<BR>From: "Bruce Beford" <</FONT><A
href="mailto:bruce.beford@myfairpoint.net"><FONT
face="Times New Roman">bruce.beford@myfairpoint.net</FONT></A><FONT
face="Times New Roman">><BR>To: <</FONT><A
href="mailto:hpsdr@lists.openhpsdr.org"><FONT
face="Times New Roman">hpsdr@lists.openhpsdr.org</FONT></A><FONT
face="Times New Roman">><BR>Subject: Re: [hpsdr] Using External 10 Mhz on
Hermes Board<BR>Message-ID: <</FONT><A
href="mailto:8FB18CD694AC4541A3BC772B1D7AED27@HPE250f"><FONT
face="Times New Roman">8FB18CD694AC4541A3BC772B1D7AED27@HPE250f</FONT></A><FONT
face="Times New Roman">><BR>Content-Type: text/plain;
charset="US-ASCII"<BR><BR>It -can- be left on. However, in my experiments with
Mercury, Penelope and<BR>Excalibur (upon which the Hermes design was based) I
noted that the 10 MHz<BR>clock from Penny, the one from Excalibur and mixing
products could be seen<BR>in received traces. I modified my Penelope to allow
disabling of it's<BR>onboard 10 MHz osc when using Excalibur.<BR><BR>For most
uses, it probably wouldn't matter. For some critical apps, it may<BR>not be
desirable to have an unused oscillator contributing to the received<BR>signal
spectrum. This is one of the reasons disabling the onboard clock was<BR>made
possible in the Hermes design.<BR><BR>73,<BR>Bruce,
N1RX</FONT></DIV></DIV></BODY></HTML>