Low speed FSKFrequency-Shift Keying telemetry to monitor and control warning sirens that are used to warn the public of threats such as tsunamis, severe weather, chemical spills and civil emergencies.
Compulert was developed by Alerting Communicators of America (ACA), now named American Signal Corporation (ASC). It is a SCADA-based proprietary FSKFrequency-Shift Keying protocol used to manage and monitor warning sirens in an area.
Sample 1: Compulert Telemetry
Sample 2: compulert(prob.) on public safety line
- KB9UKD Digital Modes
- Americal Signal Corporation, CompuLert System
- Wikipedia: American Signal Corporation (ASC)