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- SB PROP @ ARL $ARLP016
- ARLP016 Propagation de KT7H
-
- ZCZC AP30
- QST de W1AW
- Propagation Forecast Bulletin 16 ARLP016
- >From Tad Cook, KT7H
- Seattle, WA April 22, 1994
- To all radio amateurs
-
- SB PROP ARL ARLP016
- ARLP016 Propagation de KT7H
-
- Solar activity was up a bit over the past week, with average flux
- about nine points higher. Conditions were severely disturbed on the
- 17th, with auroral activity visible across the northern United
- States. Geomagnetic activity should stay mostly normal until the
- beginning of May, when recurring coronal holes rotate into view.
- Flux should rise to around 105 on May 3 or 4, and then fall back to
- current levels by the middle of the month.
-
- K8MLV points out an error in last week's ARLP015 when it was
- reported that solar flux at the beginning of April was the lowest
- since 1987. Rick reports that as recently as September of last year
- the flux was 70, almost three points lower than the value mentioned
- last week.
-
- Sunspot Numbers from April 14 through 20 were 28, 29, 26, 38, 38, 52
- and 41, with a mean of 36. 10.7 cm flux was 79.4, 80.1, 81.7, 81.8,
- 84.2, 85.4 and 86.2, with a mean of 82.7.
-
- The projection for this week is from Los Angeles, California to
- Paraguay.
-
- 80 meters looks good from 0200 to 1000z, peaking around 0430 to
- 0930. Check 40 meters from 0130 to 1100, with the best period from
- 0230 to 1000. 30 meters should be open from 0030 to 1130, peaking
- around 0230 to 1000. 20 meters should be good from 2200 to 0800,
- with the best signals after darkness covers both ends of the path.
- 17 meters should be open from 1400 to 0630, with the best signals
- toward the end of the period. 15 meters should be good from 1600 to
- 0500. 10 and 12 meters may be open on some days. Check 12 meters
- from 1730 to 0230 and 10 meters around 2100 to 2130.
- NNNN
- /EX
-
-