A woman talking about her transistor radio. A transistor radio was a type of radio that used transistor-based circuitry. When Julia and James were shrunk by Doctor Gulliver's shrink machine they were listening to their transistor radio. References ↑ As seen in Gulliver's Gigantic Goof (1973). ↑ As seen in Gulliver's Gigantic Goof (1973). External Link Transistor radio at Wikipedia Retrieved from "https://superfriends.fandom.com/wiki/Transistor_radio?oldid=59345" Categories: Equipment Community content is available under CC-BY-SA unless otherwise noted.