FM Alert

FM Alert — transmission of public defense alerts on the airwaves of radio broadcasting networks.

Alert systems that are currently in place mostly rely on the existing Internet and mobile network infrastructure. Taking into account the enemy's strategy of targeted destruction of energy facilities, the reliability of notification transmission in the event of a power outage and damage to the last mile wire networks is reduced. 

The proposed solution additionally uses the channels of broadcasting networks as a notification delivery channel.

To improve the reliability of the delivery of alert signals, it is proposed to additionally use terrestrial radio broadcasting networks as a channel for transmitting alerts. Currently, in any case, all notifications about air raids and other possible dangerous situations are transmitted over the radio exclusively as voice messages. It is proposed to supplement them with digital codes that will be transmitted before and after the voice alert in the format of DTMF messages. 

This will automate the use of messages from broadcasting networks to activate street warning systems, in internal sound warning systems in schools, public institutions and enterprises.

Upon receipt of a message from the civil defense headquarters about an air alarm or other danger, the radio operator on duty (automation program) turns on pre-prepared voice notifications with an additional DTMF code. 

The receiving module, tuned to such a radio station, when it receives an alarm or failure message, turns on or off the actuator (siren, loudspeaker, flashing beacon, etc.)

High reliability and signal coverage are planned to be achieved through the simultaneous use of several communication channels: mobile Internet, wired Internet (for stationary facilities), and simultaneous reception of several radio stations.