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Tuesday, December 2, 2008

Propagation and Monitoring Report

Sunspot activity continues to remain at zero, with no spots observed from November 18 to 29!

This is causing havoc with HF communications on frequencies above about 12 MHz, attempting to maintain communcations on long-distance paths following darkness or semi-darkness regions.

Here in Melbourne, the 9 MHz spectrum is very active in the period 1900-2100, with many short-path signals from Africa, the Middle East, Asia and Europe, following the darkness zones.

Here is a sample of observed occupancy in the 9 MHz extended-band spectrum, 9335-9500, as noted on November 30, 2008:

9250 EGYPT R. Cairo 1900-2130 Arabic
9310 EGYPT R. Cairo 1900-2030 English
9325 N. KOREA VOK 1930-2000 German
9335 SRI LANKA R. Farda Iranawila 1900-2000 Farsi
9355 MARIANAS RFA Saipan 1900-2000 Mandarin
9390 FRANCE R. Algeria via Issoudin 1900-2000 Arabic
9410 CHINA CNR5 1900-2100 Mandarin
9410 SEYCHELLES BBC 1930-2000
9420 GREECE VOG 1930-2000 Greek
9425 INDIA AIR National Channel 1900-2000
9445 INDIA AIR 1930-2000 English
9430 CZECH REP R. Prague 1930-2000 Spanish/French
9455 MARIANAS RFA Saipan 1900-2000 Mandarin
9455 PORTUGAL RDP 1900-2000 Portuguese sports
9470 GERMANY BVB Wertachtal 1930-2000 English
9480 GERMANY WYFR Wertachtal 1900-1930 English
9500 GERMANY WYFR Wertachtal 1900-2000 Arabic
9500 AUSTRALIA RA Shepparton 1900-2000 English

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