FM Emergency Warning System (PTY 31)

This project implements an FM Emergency Warning System using GNU Radio and ADALM-PLUTO (PlutoSDR). It broadcasts an FM signal with RDS PTY 31 (Alarm) code, which triggers "ALARM" mode on compatible receivers.

Features

• Web Interface: Control the alarm status and RDS text via a modern web UI.
• PTY 31 Trigger: Instantly switch from normal broadcast to Emergency Alarm mode.
• Hardware Support: Designed for ADALM-PLUTO (PlutoSDR).

Prerequisites

• Hardware: ADALM-PLUTO
• OS: Windows 10/11 (or Linux)
• Software:
  • Radioconda (Recommended) OR Anaconda
  • Python 3.10+

Installation

1. Clone the repository:

   git clone https://github.com/hakansabunis/FM.git
   cd FM

2. Create Conda Environment:

   conda env create -f environment.yml
   conda activate fm_radio

Usage

1. Start the Radio Transmitter: Open a terminal (Radioconda Prompt), activate the environment, and run:

python fm_transmitter.py --ip 192.168.2.1 --freq 100000000

2. Start the Web Interface: Open a second terminal and run:

python main.py

3. Control: Go to http://127.0.0.1:8000 in your browser.

Disclaimer

WARNING: Broadcasting on FM frequencies requires a license in most countries. This software is for educational and laboratory testing purposes only (use with a Faraday cage or dummy load). The authors are not responsible for misuse.