[NZ4O Spaceweather] Discussion Of Solar Space & Geomagnetic Weather Conditions

[Thomas F Giella NZ4O]

Published on Thursday September 27, 2012 at 1300 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 second day in a row the daily sunspot number has been above 100 at 
113. Yesterday there was some moderate to strong strength east-west radio 
wave propagation on 10 meters in both hemispheres. Early this morning UTC I 
made a good number of RTTY QSO's on 20 meters over the north polar region 
into Asiatic Russia.

There are no significant impediments to good radio wave propagation on the 
HF bands.

On the medium frequency (MF) bands there exists the normal absorption of RF 
signals in 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 additional 
absorption of RF signals in the D layer.