ARRL

ARRL Propagation Bulletin ARLP050 (1995)

SB PROP @ ARL $ARLP050
ARLP050 Propagation de KT7H

ZCZC AP19
QST de W1AW
Propagation Forecast Bulletin 50  ARLP050
From Tad Cook, KT7H
Seattle, WA  December 1, 1995
To all radio amateurs

SB PROP ARL ARLP050
ARLP050 Propagation de KT7H

Solar activity was down just slightly from last week, still
listlessly drifting around the low part of the solar cycle.
Geomagnetic conditions have been stable, except for November 27 and
29, when they were somewhat active.  The stormiest period was around
1200z on the 27th when the K index reached six, quite a high value.

Expect conditions to stay somewhat unsettled through December 5, and
then become very stable and quiet until just before Christmas.
Unfortunately the solar flux should remain low, with values just
above 70.

With low solar and geomagnetic activity, as well as the extended
night in the northern hemisphere, December should be a good month to
explore propagation on 80 and 160 meters.

There will be just two more propagation bulletins for this year, as
the author will be vacationing in Brazil in the state of Bajia after
mid month.

Sunspot Numbers for November 23 through 29 were 12, 0, 0, 0, 11, 14
and 18, with a mean of 7.9.  10.7 cm flux was 72.7, 72.2, 71.8,
72.7, 70.8, 73 and 72.3, with a mean of 72.2.

The path projection for this week is from Seattle and Dallas to
Brazil.

From Seattle, 80 meters should be open from 0030 to 0930z, 40 meters
from 2330 to 1000, and 30 meters from 2230 to 0030.  Check 20 meters
from 1900 to 2230 and 17 meters from 1800 to 2100.  15 meters may be
open some days from 1800 to 2100.

From Dallas check 80 meters from 2330 to 0930z, 40 meters from 2230
to 1000 and 30 meters from 2130 to 0000.  20 meters looks good from
1500 to 2230, 17 meters from 1530 to 2100 and 15 meters from 1630 to
1930.
NNNN
/EX