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 30
Message-ID: <19236@mgweed.UUCP>
Date: Tue, 30-Jul-85 19:07:45 EDT
Article-I.D.: mgweed.19236
Posted: Tue Jul 30 19:07:45 1985
Date-Received: Thu, 1-Aug-85 21:38:14 EDT
Organization: AT&T Information Systems - Montgomery Illinois
Lines: 36


qst de k9eui
hr propagation forecast bulletin nr 30  from arrl headquarters
newington, ct  july 28, 1985
to all radio amateurs bt

the solar flux rise predicted last week began  2  days  earlier
than  expected.   after 6 days at 69, ending july 24, the solar
flux rose steadily, reaching 79 on the 28th.  two minor sunspot
groups  came  around  the  east limb of the sun last week.  the
second of these is low on the sun, giving rise  to  speculation
that  it  may  be  a  forerunner  of  cycle 22.  an earlier low
latitude spot was visible for only 4 days, beginning  july  17.
it did have little effect on the solar flux level for its short
life.

the area of the sun responsible for the flux  peak  of  101  on
july  9  will be in view again about august 1.  it is too early
to tell if it will be of major importance this time around.   a
broad peak somewhat below 100 is a fair guess, for about august
4 to 8.  more on this next week.

sporadic e layer  ionization  seems  late  in  reaching  really
interesting  proportions  this  year.   it  is still showing up
almost daily, and may have some surprises left.   do  not  rule
out  transatlantic  dx  on  50  mhz.  it has happened in august
before, and the best e skip was late  in  starting  this  year.
for  those  interested  in  much  lower  frequencies,  the best
propagation is likely after about the middle  of  august,  when
the  solar  flux is expected to be at its lowest for the month.
atmospheric noise will remain troublesome on the low bands much
of the time until early fall.

american sunspot numbers for july 18 to 24 were between  8  and
18 with a mean of 11.1  ar