Elena realized that the story she had just uncovered was not merely a technical curiosity but a message of hope: that even in the darkest times, humanity could reach out with creativity and curiosity, sending a piece of itself into the universe.

While "Antenne" (Antennas) is available in several variations—including and Antenne, Linee e Propagazione

The marginal note read: “If the signal contains a sequence of prime numbers, it is a verification of authenticity.”

Nerio Neri (call sign ) is a prominent figure in the Italian amateur radio community, best known for his foundational technical literature on radio engineering and antenna construction. His works, often published through the Associazione Radioamatori Italiani (ARI) , serve as standard reference manuals for both aspiring and experienced radio operators. Core Literature & Resources

Since Nerio Neri is a legacy author, his works fall into a gray area of digital availability.