The Sennheiser AD3700 is a professional active directional wideband antenna designed to significantly enhance the reception and reliability of wireless microphone and monitoring systems across an exceptionally broad frequency range from 470 to 866 MHz. This antenna is engineered for critical applications in large-scale live events, broadcast, and major installed sound systems where superior RF performance is non-negotiable. Its directional design provides focused gain in a specific direction, allowing system engineers to target the antenna's pickup pattern toward the stage or performance area. This not only improves the signal-to-noise ratio from the desired transmitters but also helps reject interfering signals coming from other directions, a crucial advantage in crowded RF environments like stadium concerts or multi-venue festivals.

As an active antenna, the AD3700 incorporates a low-noise amplifier (LNA) built directly into its housing. This amplifier boosts the weak RF signals captured by the antenna element before they travel down the coaxial cable to the distribution system or receiver. This active design compensates for cable loss and effectively increases the system's sensitivity, extending the reliable operating range and ensuring strong, clean signals even over long cable runs. The antenna is powered via the coaxial cable itself using Power over Cable (PoC) technology, typically receiving 12V DC from a compatible receiver, distribution unit, or separate power inserter, eliminating the need for a separate power supply at the antenna mast.

Built for durability in both permanent installations and rigorous touring, the AD3700 features a rugged, weather-resistant housing suitable for both indoor and outdoor use. Its wideband coverage eliminates the need for multiple antennas when operating systems across different frequency bands within its range, simplifying system design. By providing focused gain, active amplification, and broad frequency coverage, the Sennheiser AD3700 is an essential tool for RF system engineers, enabling them to achieve maximum performance, stability, and range from their professional wireless microphone and in-ear monitor systems.