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Thursday, November 12, 2020

HF Propagation and Monitoring

 
 
 
Solar  activity has increased recently.  he latest report from the Dept. of Space Services, Sydney, commented -
 
Solar activity was low on UT day 11 November with a C2.6 flare from new region 2782(S32E64) at 11/1912UT. There is currently two numbered regions on the visible disk; 2781((S23W35) and 2782. No Earthward directed CMEs were observed in available coronagraph images. Solar activity is expected to be mostly low for the next three UT days, 12-14 November. On UT day 11 November,the solar wind speed was near its nominal levels, under 350 Km/s. The total IMF (Bt) varied mostly between 3-8 nT and the north-south component of the IMF (Bz) range was +/- 4 nT. The solar wind speed is expected to remain near its nominal levels for the next  three UT days, 12-14 November.
 
The 10.7cm Solar Radio Flux has increased to 88, and the  Daly Equivalent Smoothed Sunspot Number has moved up  to 32.
 
This has resulted in improved propagation and transmission into Melbourne, in our post-sunrise period, on frequencies below about 12 MHz.
This is a short summary made between 1900 and 1930, of key frequency occupancies, here in Melbourne.
 
6060  IRAN Arabic
6130 SWAZILAND TWR- Manzini African languages
6170 BULGARIA BBC-Kostinbrog Persian
6170 KOREA NORTH VOK Grman – cochannel BBC
6180 ROMANIA RRI German
7310 TAIWAN SOH Chinese
7315 FRANCE RTM Issoudin Arabic
 
 
 
 
 
 

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