If it's an old system, it's very possible there's nothing desirable like authentication/encryption - it may just be "turn on the sirens if you see any signal on the frequency of 155.555mhz" Anyone with some RF knowledge, a $300 SDR (HackRF One) and a $50 amateur radio flea market "2 meter band" amplifier could blanket a city with such a signal.
On Sun, Apr 9, 2017 at 1:15 AM, CBB - Jay Fuller <[email protected]> wrote: > > Sirens are bad right ? > > Create a custom radio on a certain frequency? I am sure these things are > set off with a radio right.... > > https://www.usatoday.com/story/news/2017/04/08/hacker- > triggers-all-156-emergency-sirens-dallas/100212412/ > > > Sent from my Verizon 4G LTE Smartphone > >
