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ARRL Propagation Bulletin ARLP045 (1996)

ARLP045 Propagation de KT7H

Propagation Forecast Bulletin 45  ARLP045
From Tad Cook, KT7H
Seattle, WA  November 1, 1996
To all radio amateurs

ARLP045 Propagation de KT7H

Solar activity was up slightly last week, and geomagnetic
disturbance was down.  Solar flux is still right around 70 though,
as it has been for a long time.  Flux values are expected to dip
slightly below 70 until November 14, and then back up around 70
through the end of the month.  Geomagnetic indices should remain
stable except around November 15 and again around November 19.

DL1VDL emailed a quote from G0CAS of RSGB: ''The emergence of a
single sunspot on the solar disc on the 20th brought an end to a 36
day period with spotless sun. The last spotless period of this
length was observed back in 1944.''  DK1VDL also wrote that DK4LI is
running a 30 meter propagation beacon operating on 10.144 MHz
identifying as DK0WCY.  A home brew magnetometer built by DK4VW
provides the K indices.  It is in the town of Kiel near the Danish

Sunspot Numbers for October 24 through 30 were 0, 13, 26, 11, 11, 0
and 0, with a mean of 8.7.  10.7 cm flux was 69.9, 69.9, 71, 72.1,
68.4, 70.4 and 70.7, with a mean of 70.3.  Planetary A indices for
the same period were 11, 8, 5, 4, 10, 11, and 10, with a mean of

Conditions look good for the ARRL Sweepstakes contest this weekend.

Some path projections for this contest weekend.

From the east coast to the west coast 80 meters looks good from
2330z to 1300z, 40 meters from 2100z to 0100z and again around 0730z
to 0930z and also 1300z.  Check 20 meters from 1630z to 2030z.

From Dallas to Chicago 80 looks good around the clock, with
strongest signals from 2330z to 1230z.  40 should be open from 1300z
to 0030z.