But, wouldn't it be hard for Ambient to claim confidentiality when, as I understand, the experimental operation is being performed by a group that extends beyond Ambient? AMATEUR RADIO: The only fail-safe communications system in the world. ARRL: The reason Amateur Radio is! Jim Weaver, K8JE, Director, Great Lakes Division ARRL 5065 Bethany Rd., Mason, OH 45040-9660, Tel. 513-459-0142, E-mail <mailto:k8je@arrl.org> k8je@arrl.org