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Wednesday, April 26, 2017

Monitoring Research - 9 MHz and 11 MHz

Monitoring Research - 9 MHz and 11 MHz
Solar activity continues to be very low, and the latest data from the Dept of Meteorology (Sydney) is that the 10.7 cm solar radio flux has dropped to 81, and the daily Equivalent Smoothed Sunspot has fallen to 22. Those levels are  not expectged to change in the immediate future.
This means that propagation will be unreliable on long-haul, multi-hop transmission paths on frequencies above about 13 MHz for darkness or semi-darkness routes,  but is expected to be satisfactory on daylight paths.
Here in Melbourne, research of spectrum usage between 1830 and 1900 on April 25, 2017, revealed these notable occupancies on 9  MHz and 11 MHz, favouring short path (darkness) propagation from Europe, Asia, Africa and the Middle East.
9310 THAILAND R. Denge Kurdistane, Udon, Kurdish
9325 EGYPT Hausa
9390 THAILAND R. Thailand, Udon Thai
9420 GREECE Greek, parallel 9935
9425 N. KOREA VOK German
9445 INDIA English
9460 TURKEY Turkish
9500 ROMANIA Romanian
9515 KOREA REP. KBS-Kimjae, Korean
9525 INDONESIA VOI Indonesian
9600 CHINA CRI-Beijing English
9610 FRANCE R. Free Gambia, Issoudin English
9730 VIETNAM German
9740 KOREA REP. KBS-Kimjae Korean
9775 ROMANIA German
9785 TURKEY English
9835 MALAYSIA RTM-Kajang Malay
9870 S. ARABIA Arabic
9875 KOREA REP. VOK French
9910 PHILS R. Filipinas Udon Tagalog
9965 MARIANAS RFA-Agignan Pt Chinese
11590 BULGARIA TOM-Kostinbrod English
11600 FRANCE R. Dengye Kurdistane, Issoudin Kurdish
11720 GERMANY VOA-Lampertheim, Amharic
11780 VATICAN VOA-SMG Kirundi
11945 FRANCE NHK-Issoudin Japanese
11955 AUSTRIA AWR-Moosbrunn Arabic
11975 ROMANIA Romanian
12150 GERMANY VOA (Deewa Radio) Pashto
Only one signal audible on 15 MHz -
15360 ENGLAND KBS-Woofferton Russian

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