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
Working 1980s Realistic TRC-214 Walkie Talkie by Radio Shack - Etsy
Realistic TRC-214 Walkie Talkie – RadioShack
Realistic TRC-214 Handheld CB Radio Walkie Talkie for sale online | eBay