The Second Generation Amateur Radio Network (SGARN) is an effort to start afresh, avoiding various pitfalls that the original AR network, the Packet network fell into.

The illustration below shows the landscape upon which this new international network must be built.
It was through an imperfect understanding of this information that most of the mistakes in the old network were made.

For more information, see: SGARN Basics and Philosophy.

frequency-bandwidth-range