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<DIV><FONT face=Arial size=2>Minimum atmospheric noise levels (above thermal
noise) for the HF bands in the quietest locations at the quietest time of the
year are:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>80 m 38 dB</FONT></DIV>
<DIV><FONT face=Arial size=2>40 m 33 dB</FONT></DIV>
<DIV><FONT face=Arial size=2>20 m 28 dB</FONT></DIV>
<DIV><FONT face=Arial size=2>15 m 23 dB</FONT></DIV>
<DIV><FONT face=Arial size=2>10 m 18 dB</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>This is according to CCIR surveys. The receiver NF
should be 6-10 dB lower.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>73,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>John</FONT></DIV>
<DIV><FONT face=Arial size=2>KD6OZH</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=carcia@sbcglobal.net href="mailto:carcia@sbcglobal.net">FRANCIS
CARCIA</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=hpsdr@hpsdr.org
href="mailto:hpsdr@hpsdr.org">hpsdr@hpsdr.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, August 10, 2006 15:42
UTC</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [hpsdr] MDS</DIV>
<DIV><BR></DIV>***** High Performance Software Defined Radio Discussion List
*****<BR><BR>
<P>
<HR>
<P></P>I think we want to shoot for an mds of abound -130 dBM above 15 MHz. fc
<P>
<HR>
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