[net.ham-radio] arrl propagation forecast bulletin nr 28

rjr@mgweed.UUCP (Bob Roehrig) (07/11/84)

qst de k9eui
hr propagation forecast bulletin nr 28   from arrl headquarters
newngton ct  july 9, 1984
to all radio amateurs bt

during the past week the solar flux varied between 97 and  104,
too  small  a  range  to  have  an  observable  effect on radio
propagation.  the earths magnetic field  was  relatively quiet.
the  net  result  was  a week of fairly good conditions for mid
summer, except for frequent periods of high noise  levels  from
electrical storms.

no large change is expected  during  the  forecast  week.   the
solar   flux   should   rise   slightly,  peaking  around  112.
propagation on high latitude circuits will be at its best  july
9 through 11. conditions will be more unstable for several days
thereafter, through about the 18th.

conditions on 21 and 28 mhz will be near their summer  minimum,
with  activity  confined  to  transequatorial paths and the low
latitudes.  sporadic e skip will continue on 28 and 50 mhz, but
it will be less frequent after the middle of july  ar