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On Sun, 22 Mar 2009 06:34:03 GMT, Owen Duffy wrote:
Richard Clark wrote in : On Fri, 20 Mar 2009 19:46:53 -0700, "Joel Koltner" wrote: Say I have an antenna that I know happens to provide an SNR of 60dB... I've been following this saga for a while now, and I note no one seems nonplused by the statement above. For as much that has been unsaid, there must be a flood of presumptions that flowed from this detail. Indeed. I addressed some in my second posting, perhaps you missed it? Owen Hi Owen, I did note: On Sat, 21 Mar 2009 03:25:39 GMT, Owen Duffy wrote: I get 60-3.2=56.8dB. Which appears to embrace this oddity of characterization. And, as you offer, you say: On Sat, 21 Mar 2009 03:43:21 GMT, Owen Duffy wrote: It says nothing of the absolute noise power or signal power. You seem to assume the noise power KTB noise where T is 290K. Which still leaves an astonishing characterization accepted, if only to seemingly fulfill a presumption. Perhaps I should more blunt, but the quote I lifted only speaks to two things: an antenna, and a claim for its signal to noise ratio. 60 dB ?????????????? This isn't credible leaving the gate, and how it is then used as a source to expand the discussion is bewildering beyond compare. The topic heading as being a paradox is certainly apt, however. 73's Richard Clark, KB7QHC |
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