Where was the first two-way radio used?

The first two-way radio was used in Bayonne, New Jersey. This significant development in communication technology occurred in the early 20th century, enhancing public safety and emergency response capabilities. Bayonne's association with this innovation reflects its historical role in advancing telecommunications, especially for first responders and public safety telecommunicators. The two-way radio allowed for real-time communication, which was a substantial improvement over previous systems and has influenced the standards of modern emergency communications.