Preface
This User's Guide is primarily based on information made available by the United States National Oceanic and Atmospheric Administration's Space Environment Services Center in Boulder, Colorado. The Geophysical Alert Broadcasts are primarily intended for users in North America and the Pacific since that region is where radio stations WWV and WWVH are best received. However, data contained in the broadcasts are useful worldwide and propagation conditions can be such that either or both of these stations can be received surprisingly well throughout the planet.
We would like to express our thanks and appreciation to the people at the Space Environment Services Center for their cooperation and assistance in the production of this User's Guide.
Comments and suggestions concerning this User's Guide only are always welcome direct to the author.
David A. Rosenthal
P. O. Box 1502
Ridgecrest, CA 93556
U S A
Geophysical Alert Broadcasts
The broadcasts explained (1)
The broadcasts explained (2)
Further information