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
Vintage REALISTIC TRC-224 WALKIE TALKIE 3 watt channel CB TRANSCEIVER - electronics - by owner - sale - craigslist
Pablo Gimenez - Stranger Things Realistic TRC-180 Lucas' walkie talkie.
Pair of Authentic 1980s Realistic Brand TRC-86 Citizens Band - Etsy
Vintage 1980s Radio Shack Realistic Walkie Talkies Stranger - Etsy
Vintage Retro Realistic Walkie Talkie Radios Model TRC-3 - Set of 2 - – MicroscopeTelescope
Vintage Retro Realistic Walkie Talkie Radios Model TRC-3 - Set of 2 - – MicroscopeTelescope
Realistic TRC-214 Walkie Talkie iPhone Case – vajacases46.com
Realistic TRC-180 3 Chanel 21-183 Battery Operated Citizens Band Transceiver Walkie Talkie | Reverb Portugal
Walkie Talkie Six Channel | For Rent in North Hollywood | Norton Space Props
Realistic Walkie Talkie TRC-224 Citizens Band Radio 3 channel 3 watts. Antique. 1990. Perfect condition. Has two leatherette covers. Works perfect. N for Sale in Orlando, FL - OfferUp
Vintage 80s Walkie-Talkie Realistic TRC-214 by 3dtreatment | 3DOcean