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- SB PROP @ ARL $ARLP011
- ARLP011 Propagation de KT7H
-
- ZCZC AP25
- QST de W1AW
- Propagation Forecast Bulletin 11 ARLP011
- >From Tad Cook, KT7H
- Seattle, WA March 18, 1994
- To all radio amateurs
-
- SB PROP ARL ARLP011
- ARLP011 Propagation de KT7H
- Solar flux was down this past week, but geomagnetic disturbances
- remained frequent. The average daily Boulder A index was over 25
- throughout the week. This made HF communication spotty, but it
- enhanced north-south propagation on the higher frequencies.
-
- Look for solar flux to rise to about 110 around the end of the
- month. After April 4 the geomagnetic field is likely to become
- quite disturbed again if the same active solar regions from four
- weeks earlier again rotate into view.
-
- Sunspot Numbers from March 10 through 16 were 56, 66, 78, 60, 35, 41
- and 31, with a mean of 52.4. 10.7 cm flux was 88, 88.1, 92.8, 90.1,
- 87.2, 87.4 and 86.2, with a mean of 88.5.
-
- The path projection for this week is from Springfield, Illinois to
- Japan.
-
- 80 meters should be open from 0930z to 1200z, and 40 meters from
- 0800z to 1300z. Check 30 meters around 0730z and again from 1230z
- to 1430z. On some days 20 meters should be open from 1400z to
- 1530z. Check it again from 2100z to 0030z. 17 meters looks good
- from 2130z to 0030z. 15 meters may be open some days from 2200z to
- 2330z. 12 and 10 meters do not look good over this path at this
- time, unless the solar flux takes a sudden jump of 40 points or
- more.
- NNNN
- /EX
-
-