A Working Intercom From Antique Telephones

This article from Hackaday showcases a project by [Attoparsec] who successfully set up a working intercom system using antique telephones from the pre-digital era. The system utilizes period-appropriate components, including D-cell batteries with recreation cases and cloth wiring, while maintaining the original analog technology. The project highlights the ingenuity of early electrical systems and demonstrates how these antique phones can still function as a local intercom.