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From: rjr@mgweed.UUCP (Bob Roehrig)
Newsgroups: net.ham-radio
Subject: arrl propagation forecast bulletin nr 25
Message-ID: <10030@mgweed.UUCP>
Date: Mon, 18-Jun-84 18:38:16 EDT
Article-I.D.: mgweed.10030
Posted: Mon Jun 18 18:38:16 1984
Date-Received: Fri, 22-Jun-84 09:23:01 EDT
Organization: AT&T Consumer Products - Montgomery Illinois
Lines: 29


qst de k9eui
hr propagation forecast bulletin nr 25   from arrl headquarters
newington ct  june 18, 1984
to all radio amateurs bt

after several days of solar flux levels in the low  90s,  solar
activity  began  to rise on june 13.  by the 15th, the flux was
up to 114.  the indications are for  gradually  lower  readings
during  the  forecast  week  and  through the end of june.  the
level of geomagnetic activity is  no  (garbled  copy  here)  in
propagation  factor  at this season, especially in our northern
states and  adjacent  areas.   on  this  basis,  fair  to  poor
propagation  is predicted through june 20, improving to fair to
good through the 28th.  the early part of the arrl  fd  weekend
should  have good summer conditions on our lower frequencies in
areas not plagued by thunderstorms.  the usefulness of  ???  28
and  50  mhz  will depend to a large extent on sporadic e layer
ionization which peaks in late june.  short  skip,  often  with
high  signal levels, can break out suddenly, so field day teams
keep continuous watches on these bands, especially  28  and  50
mhz.   e  skip is most common in late morning and early evening
hours, local time, but it can show up  at  any  hour.   stable,
calm weather makes for above average signal levels and extended
range on 50 mhz and higher frequencies.

american sunspot numbers for june 7 through 13 were between  22
and 45 with a mean of 30.9  ar