Antronix DPA396-492 1.8 GHz Ultra-High Split Diplex Filter, 5–396 MHz Upstream / 492–1800 MHz Downstream, 75 Ohm, ECT F-Ports

Antronix DPA396-492 is a 75-ohm ultra-high split diplex filter designed to separate upstream and downstream frequency bands in cable broadband systems. Its LOW port passes the extended 5–396 MHz upstream band, while its HIGH port passes 492–1800 MHz downstream signals. Maximum insertion loss of 1.5 dB on either path helps preserve signal strength, while isolation between the bands supports reliable two-way communication. Built for dependable service, the DPA396-492 features SCTE-compliant ECT F-ports, a corrosion-resistant tin-plated zinc-alloy housing, and a fully soldered backplate for RFI shielding. A 15 psi pressure seal helps resist water ingress, while integrated mounting tabs and a heavy-duty ground block support straightforward installation. The filter operates from −40°C to +60°C and provides 6 kV ring-wave surge withstand capability, with corrosion resistance tested to ANSI/SCTE-143 for 1,000 hours of salt-spray exposure.