alt Hacker NewsAt first I thought the "unmanned tunnels" description was just a way to avoid broadcast regulator scrutiny, but it does look like it's genuinely designed to be used underground as part of an emergency alert system. That led me to "leaky feeders", a type of broadcast antenna used in mines and tunnels.
Replies
_moof • today at 5:50 PM
I've also seen these used to add audio to art installations in commuter tunnels.
cbdevidal • today at 5:36 PM
Thank you, I too was confused at the purpose of this
I'm curious about challenges (what's bad with AM broadcast in an unmanned tunnel?) and why the formally verified killswitch was necessary?