Profile: Idea/Onics specializes in emergency alert systems. Our AV-70X series audio/video comb generator requires no switchers or switches, and is compatible with all headends. It covers 70 channels expandable to 100 channels and 120 channels, all in one rack mounted unit of 5¼ inches. Our AV-70 Jr. is designed to meet the needs of smaller cable systems, offering all channel audio and video alerting for systems up to 70 channels.