Clear-Com IF4W44-Channel 4-Wire to Partyline Interface

The IF4W4 ties up to four external four-wire sources into a Clear-Com partyline in a single rack space. TV camera intercoms, two-way radios, fiber circuits, and other four-wire devices each connect through a transformer-isolated input, and the interface accepts balanced or unbalanced audio on XLR or terminal-block connectors. Individual transmit, receive, and null controls, plus a built-in test jack and oscillator, make each circuit quick to set up and null cleanly.

Link switches let you route the four systems onto separate intercom channels or gang two, three, or all four onto one partyline, so the box adapts to how the show is wired. It draws its power from the intercom line over standard two-conductor shielded mic cable, with no external supply to rack. It is a mainstay for connecting cameras and radios into a live Clear-Com system.