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
Realistic TRC-216 40 Channel Walkie Talkie – CDE
Realistic TRC-214 Handheld CB Radio Walkie Talkie | Achetez sur eBay
Vintage REALISTIC TRC-224 WALKIE TALKIE 3 watt channel CB TRANSCEIVER - electronics - by owner - sale - craigslist
TALKIE-WALKIE RADIO PORTABLE réaliste TRC-214 3 canaux avec boîte travaux testés EUR 83,95 - PicClick FR
Realistic TRC 219 Walkie Talkie 3 Channel CB Citizens Band Vintage 21-1639 | Reverb France
Vintage 80s Walkie-Talkie Realistic TRC-214 3D Model $18 - .c4d - Free3D