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
No comments:
Post a Comment