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Total 4 documents matching your query.

1. Topband: auroral zone and pmaps (score: 1): Author: k9la@gte.net (Carl K9LA); Date: Fri, 28 Dec 2001 22:22:36 -0500; In addition to auroral absorption, another "oh, shoot" exists with auroral activity. Intense discrete auroral forms can be an indication of significantly increased electron densities - along with the; /archives//html/Topband/2001-12/msg00162.html (8,928 bytes)
2. Topband: auroral zone and pmaps (score: 1): Author: btippett@alum.mit.edu (Bill Tippett); Date: Sat, 29 Dec 2001 03:44:54 +0000; That's not what NOAA says about the plots Carl... http://www.sec.noaa.gov/pmap/UsePlots.html "How These Patterns Can Be Used When displayed in geographic coordinates, the statistical patterns of auro; /archives//html/Topband/2001-12/msg00163.html (7,986 bytes)
3. Topband: Auroral Zone And PMAPS (score: 1): Author: kn4lf@hotmail.com (KN4LF, Thomas Giella); Date: Sat, 29 Dec 2001 00:54:42 -0500; .....particularly effective in absorbing HF radio signals and can render HF communications impossible throughout the polar regions...... The government boys are thinking in terms of absorption and u; /archives//html/Topband/2001-12/msg00164.html (8,485 bytes)
4. Topband: Auroral Zone And PMAPS (score: 1): Author: btippett@alum.mit.edu (Bill Tippett); Date: Sat, 29 Dec 2001 11:57:19 +0000; KN4LF: The pmap plots are not "visible aurora". They are measurements of energy levels in the auroral zone which can affect signals at all frequencies and at all times. The auroral zones are always t; /archives//html/Topband/2001-12/msg00168.html (7,705 bytes)

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