DigiTan
New Member
My parents recently got one of those weather alert radios with the siren that activates whenever the National Weather Services declares a storm warning. Since this usually happens before we know the storm is coming, I thought this was extremely useful. Also, the radio responds to other events like civil emergencies, 911 outtages, and every weather danger in the book.
The radio supports **broken link removed**, so I'm trying to come up with a decoder myself. Basically I want to pass these codes to an AVR so I can filter messages by urgency and reserve the alarm for certain times of day.
Everything is in the planning phase for now, so it basically this boils down to three questions:
1. Is S.A.M.E. the only protocol for public alerts, or are others in use?
2. Are S.A.M.E. decoders available in IC form?
3. If IC decoders don't exist, can someone show me a circuit for interfacing an LM567 Tone Decoder (or similar) to a typical 8-ohm speaker output? I'm not building a radio from scratch.[/url]
The radio supports **broken link removed**, so I'm trying to come up with a decoder myself. Basically I want to pass these codes to an AVR so I can filter messages by urgency and reserve the alarm for certain times of day.
Everything is in the planning phase for now, so it basically this boils down to three questions:
1. Is S.A.M.E. the only protocol for public alerts, or are others in use?
2. Are S.A.M.E. decoders available in IC form?
3. If IC decoders don't exist, can someone show me a circuit for interfacing an LM567 Tone Decoder (or similar) to a typical 8-ohm speaker output? I'm not building a radio from scratch.[/url]