The Iron Tower was a massive signal amplifier. A signal amplifier was a type of equipment. The Galactic Empire used the Iron Tower on the planet Aridus as a massive signal amplifier during the Galactic Civil War. This article is a stub. You can help Wookieepedia by expanding it. AppearancesEdit The Return of Ben Kenobi (First appearance) Classic Star Wars 10 SourcesEdit The Essential Guide to Planets and Moons Retrieved from "https://starwars.fandom.com/wiki/Signal_amplifier?oldid=7120288" Categories: Legends articlesStubTechnology Community content is available under CC-BY-SA unless otherwise noted.