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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks, Phil……. But as I am
interested in the archive-able bandwidth, the A/D sampling rate doesn’t
matter so much and neither does the display-able bandwidth you mention. What
rate will be saveable to disc? Will the user be able to vary that rate? And
also, what can be done with the archived data? Is there current or planned
support for playback of the files?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Chuck<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Phil Harman
[mailto:phil@pharman.org] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Friday, April 11, 2008 5:48
PM<br>
<b><span style='font-weight:bold'>To:</span></b> Chuck Hutton;
hpsdr@lists.hpsdr.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [hpsdr] Mercury
sampling rate</span></font><o:p></o:p></p>
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12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face=Arial><span style='font-size:12.0pt;
font-family:Arial'>Hi Chuck,</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face=Arial><span style='font-size:12.0pt;
font-family:Arial'>We sample at 122.88MHz since that divides evenly to standard
sound card frequencies. This does need updating since we will be able to
achieve 2MHz of displayed bandwidth using the current USB2 interface to the PC.</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face=Arial><span style='font-size:12.0pt;
font-family:Arial'>73's Phil...VK6APH </span></font><o:p></o:p></p>
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margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>----- Original Message ----- <o:p></o:p></span></font></p>
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<p class=MsoNormal style='background:#E4E4E4'><b><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial;font-weight:bold'>From:</span></font></b><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> <a
href="mailto:charlesh3@msn.com" title="charlesh3@msn.com">Chuck Hutton</a> <o:p></o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'>To:</span></font></b><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> <a
href="mailto:hpsdr@lists.hpsdr.org" title="hpsdr@lists.hpsdr.org">hpsdr@lists.hpsdr.org</a>
<o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'>Sent:</span></font></b><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> Saturday, April
12, 2008 3:51 AM<o:p></o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'>Subject:</span></font></b><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> [hpsdr] Mercury
sampling rate<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>***** High Performance
Software Defined Radio Discussion List *****<o:p></o:p></span></font></p>
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face="Times New Roman"><span style='font-size:12.0pt'>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>The Mercury page at <a href="http://hpsdr.org/mercury.html">http://hpsdr.org/mercury.html</a> says:<br>
<br>
"the board will contain it's own FPGA to undertake Digital Down Conversion
(DDC) to 250 kSPS or less for transfer over the Atlas bus to the USB interface
on the OZY board."<br>
<br>
<br>
Earlier, I thought that the sampling rate goal was going to be much higher to
allow the host PC to archive wider chucks of bandwidth like an entire ham, SW
or AM (broadcast) band.<br>
<br>
Is this just an old piece of information that needs correction? If so, what is
the real target?<br>
<br>
<br>
Chuck<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>_______________________________________________<br>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>No virus found in this incoming message.<br>
Checked by AVG. <br>
Version: 7.5.519 / Virus Database: 269.22.12/1373 - Release Date: 4/11/2008
9:17 AM<o:p></o:p></span></font></p>
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