ARRL

ARRL Propagation Bulletin ARLP027 (1996)

SB PROP @ ARL $ARLP027
ARLP027 Propagation de KT7H

ZCZC AP48
QST de W1AW
Propagation Forecast Bulletin 27  ARLP027
From Tad Cook, KT7H
Seattle, WA  July 5, 1996
To all radio amateurs

SB PROP ARL ARLP027
ARLP027 Propagation de KT7H

Over the past week the author of this bulletin was relaxing on the
coast of Washington State at Tokeland and then at Pacific Beach.
Night time listening on low frequencies with a general coverage
receiver was a treat, as we were away from the city in a lightly
populated area on the Pacific shore.

Average Sunspot number was down just six points for last week
compared to the week previous.  Average Solar Flux was unchanged.
Here at the bottom of the solar cycle it is difficult to make
forecasts based on recurring activity on the rotating Sun, since
there is so little activity to track through the solar rotation.

The latest forecast from NOAA Space Environment Service Center
shows no geomagnetic disturbances expected over the next month, and
the Solar Flux staying right around 70.  It is expected to drop
below 70 over the next few days, then come back up to 70 around
July 17.

Best bets during the Summer for worldwide propagation are 20 meters
during daylight, especially north south paths, and 30 and 40 meters
after dark.

Sunspot Numbers for June 27 through July 3 were 25, 24, 23, 23,
11, 13 and 13, with a mean of 18.9.  10.7 cm flux was 71.4, 71.4,
70.9, 70.7, 70, 70.4, and 69, with a mean of 70.5.
NNNN
/EX