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
Walkie Talkie - Etsy Canada
Realistic TRC-214 walkie-talkie vintage for Sale in Winston-Salem, NC - OfferUp
Pair of Authentic 1980s Radio Shack Realistic TRC-214 Walkie - Etsy Ireland
ArtStation - Realistic TRC-214 Walkietalkie
Walkytalky 3D models - Sketchfab
Realistic TRC-214 Handheld CB Radio Walkie Talkies Tested Working Set of 2 | eBay
Used Realistic TRC-214 CB Radios for Sale | HifiShark.com
RadioShack - Protect your 2019 phone like it's 1985! Our iconic Realistic TRC-214 CB Walkie-Talkie may not be available anymore, but its spirit lives on. We're celebrating the new season of our
ArtStation - Realistic TRC-214 Walkie Talkie
Realistic TRC-214 Handheld CB Radio Walkie Talkie NOT TESTED ! | eBay
ArtStation - Realistic TRC-214 Walkie Talkie
PAIR OF VINTAGE Stranger Things Realistic TRC-214 Walkie Talkies CB Radios Works $69.99 - PicClick