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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'>Cerberus – Latinized form, Kerberos –
Greek form.<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'> Chris – AE6VK<o:p></o:p></span></font></p>
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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 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold'>From:</span></font></b><font
size=2 color=black face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
color:windowtext'> Jeroen Bastemeijer [mailto:J.Bastemeijer@TUDelft.nl] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, February 22, 2007
3:14 AM<br>
<b><span style='font-weight:bold'>To:</span></b> FRANCIS CARCIA<br>
<b><span style='font-weight:bold'>Cc:</span></b> hpsdr@hpsdr.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [hpsdr] Front End
protection</span></font><font color=black><span style='color:windowtext'><o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt'>Hi Francis,<br>
<br>
It wasn't a god, but a dog-like creature called Ceberus (if my memory serves me
well).<br>
<br>
In my opninion a combination of resistors and diodes (to the power suply lines)
is the best solution. The resistors will limit the current and provide some
"soft clipping". By soft-clipping all sorts of distortion generated
by the receiver are avoided.<br>
<br>
Regards, Jeroen PE1RGE<br>
<br>
FRANCIS CARCIA wrote:<br>
<br>
<o:p></o:p></span></font></p>
<pre wrap=""><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt'>***** High Performance Software Defined Radio Discussion List *****<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'> <o:p></o:p></span></font></pre>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
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style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt'>I don't know which Greek God guarded the gate but how
are we going to protect this fast A/D from static and lightning transients?
Racal used an interesting active limiter ahead of the RA6830 because the older
RA6790 had real bad burnout problems with the FETs in the first mixer. I would
think we need more than a NE2 across the input. Frank WA1GFZ<o:p></o:p></span></font></p>
</div>
<pre wrap=""><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre
style='text-align:center'><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt'>
<hr size=4 width="90%" align=center>
</span></font></pre><pre><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>_______________________________________________<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>HPSDR Discussion List<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>To post msg: <a
href="mailto:hpsdr@hpsdr.org">hpsdr@hpsdr.org</a><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Subscription help: <a
href="http://lists.hpsdr.org/listinfo.cgi/hpsdr-hpsdr.org">http://lists.hpsdr.org/listinfo.cgi/hpsdr-hpsdr.org</a><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>HPSDR web page: <a
href="http://hpsdr.org">http://hpsdr.org</a><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Archives: <a
href="http://lists.hpsdr.org/pipermail/hpsdr-hpsdr.org/">http://lists.hpsdr.org/pipermail/hpsdr-hpsdr.org/</a><o:p></o:p></span></font></pre>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt'><br>
<br>
<o:p></o:p></span></font></p>
<pre><font size=2 color=black face="Courier New"><span style='font-size:10.0pt'>-- <o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Ing. Jeroen Bastemeijer<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><st1:place
w:st="on"><st1:PlaceName w:st="on"><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt'>Delft</span></font></st1:PlaceName> <st1:PlaceType
w:st="on">University</st1:PlaceType></st1:place> of Technology<o:p></o:p></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Department of Electrical Engineering<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Electronic Instrumentation Laboratory<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Mekelweg 4, Room 13.090<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>2628 CD <st1:City
w:st="on"><st1:place w:st="on">Delft</st1:place></st1:City><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>The <st1:country-region
w:st="on"><st1:place w:st="on">Netherlands</st1:place></st1:country-region><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Phone: +31.15.27.86542<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Fax: +31.15.27.85755<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>E-mail: <a
href="mailto:J.Bastemeijer@TUDelft.nl">J.Bastemeijer@TUDelft.nl</a><o:p></o:p></span></font></pre></div>
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