The Anchor Audio WM-50 is an interface station that allows full duplex communication between ProLink 500 wireless belt packs and unbalanced party-line intercom systems such as the PortaCom. The WingMAN 500 includes a transceiver that is compatible with ProLink 500 belt packs. An integrated interface circuit makes it possible to interface the transceiver with party-line intercom systems with ease. The RX/TX LED glows solid when the wireless remote belt packs are out of range. The remote belt packs must move closer to the WingMAN 500 to operate.