The SCPR-457 Radio Transceiver is a portable communication device used by the Foundation and borrowed by Omega personnel. It has multiple channels and is used to communicate from long distances. It is modified to be partially immune to the effects of The Corruption (static, disturbances or malfunctions caused by The Corruption).
The radio makes it's first appearance in coop_omega7 as a collectible item. The user will carry it for the rest of the mappack. The players will also hear an unknown man who tries to help the team, but fails as the team gets an idea faster than him. Since of coop_omega9, the unknown man is not heard, his fate is yet unknown.