Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 6/24/83; site mgweed.UUCP
Path: utzoo!watmath!clyde!cbosgd!ihnp4!mgnetp!mgweed!rjr
From: rjr@mgweed.UUCP (Bob Roehrig)
Newsgroups: net.ham-radio
Subject: arrl propagation forecast bulletin nr 49
Message-ID: <13977@mgweed.UUCP>
Date: Mon, 3-Dec-84 21:18:27 EST
Article-I.D.: mgweed.13977
Posted: Mon Dec  3 21:18:27 1984
Date-Received: Tue, 4-Dec-84 08:45:03 EST
Organization: AT&T Consumer Products - Montgomery Illinois
Lines: 31


qst de k9eui
hr propagation forecast bulletin nr 49   from arrl headquarters
newington ct  december 3, 1984
to all radio amateurs  bt

the gradual  solar  flux  rise  reported  last  week  continued
through  november  26.   its  peak value, 86, the highest since
early september, came a bit late in the autumn season to be  of
benefit,  but it brought a welcome improvement in dx conditions
on  21  and  28  mhz.   two  major  active  areas  of  the  sun
responsible  for  this  new lease on life have moved around the
west limb now, dropping the solar flux to 79.  another area  is
due back this week, so a large decline is imminent.

it is unlikely that the solar flux will reach levels  used  for
propagation  charts appearing in qst for november and december,
so look for maximum useable  frequencies  and  duration  of  dx
openings somewhat lower than predicted.

only moderate peaks of geomagnetic activity are expected  until
december  12, so propagation should be fair to good until then.
of special interest to users of 28,  50  and  144  mhz  is  the
annual  gemenids  meteor shower peaking december 10 through 14.
short term ionization produced  by  these  meteors  burning  up
(garble)  but  large  peaks in signal levels on these bands, at
distances up to about 1200 miles.

american sunspot  numbers  for  november  22  through  28  were
between 17 and 43 for a mean of 31.1  ar