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-219 3 Watt 3 Channel Citizens Band Transceiver, Hobbies & Toys, Memorabilia & Collectibles, Vintage Collectibles on Carousell
Walkie Talkie Realistic Trc-219 Model No. 21-1639a | MercadoLibre