Clear-Com IF4W4

 Four channel interface - connects Clear-Com to TV cameras, two-way radios, satellite links, and other communications devices through either their headset jacks or 4-wire circuits. Has selective party-line capability. Features individual transmit, receive, and null controls, as well as transmitlevel indicators. Switchable mic- or line-level output for compatibility. The built-in test jack and test tone provide quick nulling.