ARRL

ARRL Propagation Bulletin ARLP012 (1996)

SB PROP @ ARL $ARLP012
ARLP012 Propagation de KT7H

ZCZC AP33
QST de W1AW
Propagation Forecast Bulletin 12  ARLP012
From Tad Cook, KT7H
Seattle, WA  March 22, 1996
To all radio amateurs

SB PROP ARL ARLP012
ARLP012 Propagation de KT7H

Solar activity remained low, about the same level as the previous
week.  There was a rise in geomagnetic activity in the past few
days, with K indices as high as five.  Another rise in geomagnetic
activity is expected around April 7 through 9 due to a recurring
coronal hole.

Solar flux should remain flat with little variation over the next
month.  Currently at the Spring equinox we are experiencing some
seasonal improvement in HF communication.  Too bad the solar flux
isn't higher.  Spring of 1998 should be much improved.

Sunspot Numbers for March 7 through 13 were 17, 15, 15, 12, 11, 11
and 0, with a mean of 11.6.  10.7 cm flux was 70.8, 70.4, 71, 70.6,
70.6, 69.9 and 69.3, with a mean of 70.4.

The path projections for this week are from the west coast of the
U.S. to Western Europe, Southern Africa, South America, South
Pacific and Japan.

To Western Europe look for 80 meters to open from 0230 to 0630z, 40
meters from 0130 to 0800z and 30 meters around 2300 and 0700z.  20
meters looks good from 1500 to 2000z, and 17 meters around 1800z.

To Southern Africa expect 80 to open from 0230 to 0400, 40 from 0130
to 0430, 30 from 0030 to 0230 and 0430 to 0530, 20 from 2200 to
0000, and 17 from 1700 to 1930.

To South America check 80 from 0200 to 1000, 40 from 0130 to 1030,
30 from 0030 to 0800 and again from 1000 to 1130, 20 from 2130 to
0430, 17 from 1600 to 0300 and 15 from 1730 to 0100 and 12 meters
from 2030 to 2200.

To South Pacific 80 should open from 0530 to 1430, 40 from 0430 to
1500, 30 from 0330 to 1430, 20 around 1700 to 2000 and 0100 to 0600,
17 from 1730 to 0430, 15 from 1800 to 0300, and 12 meters from 2030
to 0100.  10 meters could have some openings over the same period as
12 meters.

To Japan check 80 from 0900 to 1430, 40 from 0800 to 1530, 30 from
0630 to 1700 with a week period around 1230 to 1330, 20 from 2100 to
0500, 17 from 2130 to 0400 and 15 from 2230 to 0200.
NNNN
/EX