Total posts : 45366
The weather radio I’m using is a Uniden Bearcat WX100. I bought a few of the years ago when the SAME alert system first came along. I’ve used one at work, one in the living room, one in the ham shack, and now one with my part 15. I bet I’ve had ’em for 15 years — so they may not be current models. They have two terminals on the top (by the other jacks) that are actually for wires to go it (It’s like a mini wire terminal block). It’s actually designed to use with some sort of external alerting device, such as a flashing light, vibrator, etc to alert deaf people if there’s severe weather.
I built a small box with a DPDT relay in it, with it’s own wall wart power supply. In normal position audio goes through the relay from the computer to the transmitter, when the alarm activates it closes the terminals, engages the relay and switches the audio from computer to audio from the eather radio. When the alert ends and the radio goes back to normal, the relay releases and puts the computer back on the air. Simple and cheap.
We use this exact same radio at the commercial stations I work for to feed NWS alerts to the EAS system — of course we don’t need the relay there as the EAS takes care of that as it identifies the audio of the alert tone.
Tim in Bovey