[IRCA] Discussion Of Solar Space & Geomagnetic Weather Conditions

["Thomas F Giella NZ4O" <nz4o@xxxxxxxxxxxxxxx>]

Published on Friday October 05, 2012 at 1430 UTC. Valid for the next 24 hours.


1.) DISCUSSION OF SOLAR, SPACE & GEOMAGNETIC WEATHER CONDITIONS THAT CAN IMPACT MF & HF RADIO WAVE PROPAGATION IN A NEGATIVE MANNER-

For the 7th day in the row the daily sunspot number has languished below 100 at 56.

There are no significant impediments to good radio wave propagation on the HF bands as far as solar, space and geomagnetic weather. However the daily sunspot number needs to be higher than the present 56. The higher the sunspot number (100 & >) (150 & > best) the more ultraviolet light available to increase ionization in the F/F2 layer, for more consistent east-west radio wave propagation openings on 12 and 10 meters. 

On the medium frequency (MF) band there exists the normal absorption of RF signals through the D layer due to incoming cosmic rays and hard x-rays. Also the background x-ray flux is running in the B range so there is some absorption of RF signals through the D layer. 



73 & GUD DX,                                                                                                                                                                                                                        Thomas F. Giella, NZ4O
Lakeland, FL, USA
nz4o@xxxxxxxxxxxxxxx 

NZ4O Amateur & SWL Radio Autobiography: http://www.nz4o.com 
NZ4O "Daily" HF/6M Radio Wave Propagation Forecast: http://www.solarcycle24.org  
NZ4O "Daily" Solar, Space Weather & Geomagnetic Data Archive: http://www.wcflunatall.com/nz4o1.htm  
NZ4O Solar Space, Weather & Geomagnetic Data Dashboard: http://www.wcflunatall.com/nz4o2.htm  
NZ4O Solar Cycle 24 Forecast Discussion & Archive: http://www.wcflunatall.com/nz4o4.htm  
NZ4O 160 Meter (MF) Radio Propagation Theory Notes: http://www.wcflunatall.com/nz4o5.htm  
NZ4O Solar Space Weather & Geomagnetic Raw Forecast Data Links: http://www.wcflunatall.com/nz4o6.htm  
Solar Cycle 24 dot org on Facebook: http://www.facebook.com/pages/SolarCycle24org/139198369462931
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