On Feb 8, 2005, at 8:47 AM, Kim Elmore wrote:
I think the point being made here is not that the equipment is
questionable (the attenuator could be accurate to +/- 10^-13 dB) but
that other things, none of which are contrary to what we currently
know about HF propagation, were going on to confound your
interpretation of the data that was collected.
Since the measurement equipment and procedure was the same on one day
as on the other, the confounding factors should have been constant. and
the observed gain on any two days should have been the same.
Kim Elmore, N5OP
At 10:02 AM 2/8/2005, you wrote:
On Feb 8, 2005, at 7:39 AM, Ian White G3SEK wrote:
R. Measures wrote:
When measurements don't fit in with everything we already know,
real scientists and engineers are trained to ask themselves:
"Is this something really new - am I really another Einstein? Or
did I simply get it wrong?"
The question is simply: Is my HP-355 step-attenuator set
intermittently off by 3db?
If you still cannot see that the potential sources of error in your
"propagation experiment" were *vastly* more numerous and complicated
than that, then this horse is dead.
NBS traceable step-attenuator A-B measurement is the gold standard of
gain and loss determinations.
--
73 from Ian G3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
Kim Elmore, Ph.D.
University of Oklahoma
Cooperative Institute for Mesoscale Meteorological Studies
"All of weather is divided into three parts: Yes, No, and Maybe. The
greatest of these is Maybe" The original Latin appears to be garbled.
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|