Polyphaser TSX-DFM-BF TRANSTECTOR 698-2700MHz, DC Blocked Coaxial Protection 7/16 DIN(M)(F)

The PolyPhaser TSX-DFM-BF is a professional-grade coaxial RF surge protector engineered for outdoor radio and antenna installations operating across the 698 MHz to 2.7 GHz frequency range. Utilizing integrated surge filter technology, the device suppresses DC and lightning-induced transients before they can reach sensitive downstream equipment, while maintaining clean signal passage across the full frequency band. The 7/16 DIN female-input, male-output bulkhead configuration makes it well suited for tower-mounted, rooftop, and wall-penetration installations where a weatherproof, mechanically robust connection point is required. Low passive intermodulation performance at -155 dBc ensures the protector does not degrade signal quality in PIM-sensitive deployments such as cellular base stations and distributed antenna systems. IP67 ingress protection confirms the unit is sealed against dust and temporary immersion, supporting reliable long-term operation in demanding outdoor environments. REACH and RoHS compliance supports regulatory requirements for installations across a broad range of markets.

Key features & benefits

• Wide Cellular Band Coverage — Passes signals from 698 MHz to 2.7 GHz, spanning legacy 700 MHz LTE through 2.7 GHz bands, making it applicable across a broad range of modern cellular, public safety, and wireless infrastructure deployments.
• High Power Handling — Rated for a maximum continuous power of 500 W, allowing the protector to be installed in high-power transmit paths without becoming a bottleneck in the RF link.
• Robust Surge Suppression — Rated to handle surge events up to 40 kA with a let-through energy of only 0.005 µJ, providing a high level of protection for sensitive radio and baseband equipment against lightning-induced transients and electromagnetic pulse events.
• DC Block Function — Integrated DC blocking prevents DC voltage from passing through the coaxial path, protecting connected equipment from DC faults that can arise in antenna systems utilizing remote electrical tilt or active antenna components.
• Low PIM Performance — Passive intermodulation is rated at -155 dBc, meeting the stringent PIM requirements of modern multi-carrier base station environments where intermodulation products can desensitize receiver chains.
• IP67 Environmental Rating — The sealed IP67-rated enclosure is fully protected against dust ingress and water immersion, making the device suitable for exposed outdoor mounting locations including tower tops, building facades, and equipment shelters.
• 7/16 DIN Bulkhead Interface — Features a 7/16 DIN female input and 7/16 DIN male output in a bulkhead form factor, the industry-standard connector choice for base station and distributed antenna system RF infrastructure.
• REACH and RoHS Compliance — Manufactured in compliance with REACH and RoHS directives, supporting environmental and regulatory requirements for infrastructure deployments in domestic and international markets.