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Tuesday, February 14, 2012

HF Monitoring from Melbourne

Solar activity, sourced to IPS, Sydney, Feb 12 2012:

"Solar activity was Low over the last 24 hours with several C-class X-ray
flares. These were all produced by sunspot region 1419(N28E77) which rotated
onto the disc during this period. No CMEs of significance were observed. The
solar wind speed as measured by the ACE satellite ranged around 300-340 km/s
prior to 1700 before increasing to around 380 km/s afterwards. The IMF Bz
component ranged between +3/-5 nT.

Solar activity is expected to remain low with some chance of M-class flares
over the next three days.

"10.7 cm solar flux 110, Equivalent sunspot number 60"

Propagation research:

I studied spectrum occupancy on Feb 13 at a field site at Donnelly's Weir,
near Healesville, 70 km east of Melbourne, revealing good propagation in the
mid-afternoon period between 0330 and 0430 on 11 MHz and 13 MHz.

Longpath from Europe, Africa, Middle East - shortpath from Americas, Asia -
this is a summary of key occupancies in period 0330 to 0400:

11625 MADAGASCAR Vatican Radio via Talata, Amharic 0400
11710 CHINA CRI Russian to 0357*
11800 ABU DHABI Sudan Radio Service, Dhabbaya Arabic *0400
11820 OMAN BBC Arabic from *0400
11825 ROMANIA RRI Spanish to 0355*
11840 CUBA RHC Spanish
11895 SRI LANKA Deewa Radio, Iranawila, Pashto
11905 CHINA CNR6 Amoy
11935 N. ANTILLES NHK Bonaire Japanese
12025 THAILAND RL Udorn Uzbek
12035 SPAIN REE Spanish

13615 SRI LANKA R. Farda, Iranawila Farsi
13620 CHINA CRI Xian, English
13630 UZBEKISTAN CVC Tashkent Hindi *0400
13710 MARIANAS RFA Tinian Chinese

Regards from Melbourne!

Bob Padula

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