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Tuesday, August 17, 2010

Solar activity

The latest data from the IPS Radio and Space Services in Sydney for August
16 shows small increases for the 10.7 cm solar flux - 86 - and the smoothed
sunspot number at 29.

Propagation research here in Melbourne revealed that MUFs/OWFs for the
shortpath mode from Europe, Africa, Asia, and the Middle East, following the
darkness zone from the west, have been around 14 MHz in the window 1900 to
2200. Until recently, this had been as low as 11 MHz. Longpath from the
Americas was also apparent, also arriving here from the west.

The 13 MHz band provides a useful platform for study of these propagation
patterns as the Melbourne Spring approaches!

These are some occupancies noted on August 16, representative of these
changed conditions:

13610 CHINA CNR1 2300-0000
13625 MARIANAS RFA-Tinian, Mandarin 2000-2100
13640 ALBANIA R. Tirana, English 2000-2025*
 "    JAPAN NHK-Yamata, Japanese *2200-2300*
 "    CHINA CRI-Jinhua, Japanese *2200-0000*
13650 JAPAN NHK-Yamata, Asian langs *2240-2340*
13680 JAPAN NHK-Yamata, Japanese *2200-0000*
13690 AUSTRALIA RA-Shepparton, English *2300
13730 VATICAN RCI via Santa Maria di Galeria, French to 2000*
 "    RNZI English 2345
13745 ENGLAND BBC-Rampisham, Portuguese *2030-2100*
13760 N. KOREA VOK, French 2030-2055*
13795 INDIA AIR Hindi *2345
13805 THAILAND VOA-Udorn, English *2300
13845 USA WWCR English 2330-0000* (LONGPATH)

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