Andrew Commscope APT-DFDM-DB Andrew Arrestor Plus Dual Band Quarterwave Surge Arrestor T-shaped

The CommScope Andrew Arrestor Plus APT-DFDM-DB is a dual-band quarter-wave surge arrestor engineered to protect sensitive base station and distributed antenna system equipment from damaging transient voltage events caused by lightning and electrical surges. Its T-shaped passive architecture leverages quarter-wave shunt technology to provide a low-impedance path to ground during surge events while maintaining signal integrity across two discrete frequency bands in normal operation. The unit employs DIN Female and DIN Male interface types, making it a drop-in solution for standard coaxial transmission line installations without requiring additional adapters. Designed for professional RF infrastructure deployments, it is well-suited for cellular, public safety, and broadband wireless systems operating across both covered frequency ranges.

Key features & benefits

• Dual-Band Coverage — Simultaneously supports two independent frequency bands—806–960 MHz and 1700–2170 MHz—allowing a single arrestor to protect multi-band antenna systems without requiring separate inline devices for each band.
• Quarter-Wave Surge Technology — Utilizes a passive quarter-wave shunt design that provides a reliable, gas-tube-free surge suppression path, eliminating consumable components and reducing long-term maintenance requirements.
• T-Shaped Form Factor — The T-shaped mechanical configuration facilitates straightforward inline installation within coaxial transmission line runs, supporting clean cable routing in rack, tower, and wall-entry applications.
• DIN Female to DIN Male Interface — Terminated with industry-standard DIN Female and DIN Male connectors for direct compatibility with standard 7/16 DIN coaxial infrastructure commonly used in professional RF base station and DAS environments.
• Arrestor Plus Platform — Part of CommScope Andrew's proven Arrestor Plus product family, reflecting a heritage of reliability in protecting RF infrastructure investments in demanding telecommunications deployments.