CompuLert

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CompuLert
Compulert.jpg
Frequencies 453.375 MHzMegaHertz (MHz) 10^6 Hz453,375,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
453,375 kHzKiloHertz (kHz) 10^3 Hz
453,375 kHzKiloHertz (kHz) 10^3 Hz
453.375 MHzMegaHertz (MHz) 10^6 Hz
453,375 kHzKiloHertz (kHz) 10^3 Hz
453.375 MHzMegaHertz (MHz) 10^6 Hz
Frequency Range 453.375 MHzMegaHertz (MHz) 10^6 Hz453,375,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
453,375 kHzKiloHertz (kHz) 10^3 Hz
- 453.375 MHzMegaHertz (MHz) 10^6 Hz453,375,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
453,375 kHzKiloHertz (kHz) 10^3 Hz
Mode NFMNarrowband Frequency Modulation
Modulation FSKFrequency-Shift Keying
ACFAutoCorrelation Function
Bandwidth 5 kHzKiloHertz (kHz) 10^3 Hz5,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
0.005 MHzMegaHertz (MHz) 10^6 Hz
kHzKiloHertz (kHz) 10^3 Hz
0.005 MHzMegaHertz (MHz) 10^6 Hz
kHzKiloHertz (kHz) 10^3 Hz
0.005 MHzMegaHertz (MHz) 10^6 Hz
Location Worldwide
Short Description 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.
I/Q Raw Recording
Audio Sample

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.


Samples[edit]

Sample 1: Compulert Telemetry


Sample 2: compulert(prob.) on public safety line


Video Examples[edit]

Additional Links[edit]

Additional Images[edit]