I am lucky enough to get my hands on a Realistic TRC-86, the walkie talkie they used in the series. Not sure if it works but just to have as display is
RetroNewsNow on Twitter: ".@RadioShack creates lookalike walkie talkie iPhone cases, printed with the controls found on the iconic Realistic TRC- 214 CB radio. Featured in #StrangerThings3, the TRC-214 was introduced in 1985 https://t.co/q0C20KvZaE