AMATEUR RADIO STATION

L A 5 M D A

NORWAY



QTH: Oslo - 59° 56′ 04″ N / 10° 46′ 20″ E - JO59jw
CQ Zone 14 - ITU Zone 18 - A for WALA - A-01 for WANCA
Bjørn Henrik Vangstein - Godalsvei 6 - N-0871 OSLO - NORWAY
la5mda{æ}la5mda.no - www.la5mda.no
Propagation predictions for September 2010
[21/August/2010]

These propagation predictions shows usable openings from Oslo to 16 locations around the world. The predictions are presented in four different formats: best band each hour, best hours on each band, signal levels and a world map overview. The maps are grouped both by band and by hour. The predictions are based on VOACAP version 07.1025I method 30.

Propagation maps for September 2010
[21/August/2010]

This section shows maps with grey tones indicating the signal-to-noise ratio on every point of the globe. One map for each band and each hour of the day are generated for the actual month - totally 192 maps. Brighter color indicates better SNR. The coverage maps give a qualitatively overview and build an intuitive understanding of how the conditions on each band are influenced by the sunlight. These prediction illustrations are generated with Ham CAP software (VE3NEA). These predictions are generated based on the same parameters as the charts above. Transmitter power is 100 W, the antenna model is isotropic with 3 dBi gain. A brief discussion on the choice of parameters can be found in the charts above.

Propagation Maps for Oslo

September 2010 (SSN=22)

« UTC »
00 01 02 03 04 05 06 07
08 09 10 11 12 13 14 15
16 17 18 19 20 21 22 23

« MHz »
3.5 7 10 14 18 21 24 28

Expected HF Conditions Chart
[22/March/2008]

The following chart (PDF) is an aid to use the above propagation charts on a day-to-day-basis with variations in the solar flux and A and K-indexes:

Use the actual solar flux and A/K values in the chart to evaluate the general HF conditions. The charts above here are produced for normal conditions. With "Above normal" conditions, expect earlier openings that last longer and maybe openings on higher bands than predicted in the charts. With "Below normal" or "Disturbed", expect the opposite tendencies.

Example: With solar flux = 68 and Ap = 10 we have High normal conditions. Expect at least as good conditions as predicted in the charts.

Latest radio activities from LA5MDA

The top of my radio log:

Last 12 months my log statistics says:

Mode:

  • CW 90%
  • Phone 8%
  • RTTY 2%
  • Others 0%

Band:

  • 160m 1%
  • 80m 20%
  • 60m 2%
  • 40m 25%
  • 30m 10%
  • 20m 27%
  • 17m 7%
  • 15m 3%
  • 12m 2%
  • 10m 3%
  • 6m 1%
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