Abstract: A low-PIM barrier stanchion and a safety barrier including multiple low-PIM barrier stanchions and a low-PIM barrier line, such as plastic chain, extending between the barrier stanchions. The barrier stanchion includes a cap that functions as a barrier line receiver, a mast that functions as a sign receiver, and a base that functions as a ballast receiver. The cap includes a receptacle that receives a portion of the barrier extending into an upper portion of the mast. The cap also includes a hood that retains a pass-through section of the chain allowing multiple stanchions to be linked together with a continuous length of barrier line. The base includes one or more pockets for receiving ballast blocks and the mast includes holes for receiving a sign or a sign holder plate to which a sign may be attached.