AG4QC wrote:
We are looking to add EAS broadcasts to our local repeater. I was thinking
we could build a EAS decoder and then determine which alerts to have
repeated. Has anyone looked into building a EAS decoder?

I have, without much success. They used non-standard modem tones and
data rates. (probably to discourage spoofing)

I wonder if the easiest way might be to cannibalize a S.A.M.E. weather
radio? You could even tap the warning lights to signal the repeater
when an alert is present, and simply use the programming of the weather
radio to decide which alerts to relay.
--
Doug Smith W9WI
Pleasant View (Nashville), TN EM66
http://www.w9wi.com