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<DIV>This is somewhat inconsistent with my measurements with a beam on 17 to 10
m. I would loook for a sensitivity of a NF of 6Dm...</DIV>
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<DIV>73 de Ulrich, N1UL</DIV>
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<DIV>In a message dated 11.08.2006 14:23:27 Westeuropäische Normalzeit,
grant@ghengineering.co.uk writes:</DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><FONT
style="BACKGROUND-COLOR: transparent" face=Arial color=#000000 size=2>*****
High Performance Software Defined Radio Discussion List
*****<BR><BR>John<BR><BR>Many thanks for posting this - I've never seen it
before. Please could you<BR>post the data for 160m and 6m as well if you
have it, to complete the list?<BR><BR>regards<BR><BR>Grant
G8UBN<BR><BR>>Minimum atmospheric noise levels (above thermal noise) for
the HF bands in<BR>the quietest locations at the quietest time of the year
are:<BR><BR>>80 m 38 dB<BR>>40 m 33 dB<BR>>20 m 28
dB<BR>>15 m 23 dB<BR>>10 m 18 dB<BR><BR>>This is
according to CCIR surveys. The receiver NF should be 6-10 dB
lower.<BR></FONT></BLOCKQUOTE></DIV>
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