Sennheiser A 1031-U Passive Omnidirectional Antenna

Description

The Sennheiser A 1031-U is a passive omnidirectional UHF antenna designed for both transmitting and receiving applications. It provides full 360-degree coverage, making it ideal for environments where multiple wireless microphones or bodypack transmitters move unpredictably. Its wideband design supports 430–960 MHz, covering all common UHF wireless mic bands. The A 1031-U mounts easily on standard microphone stands and connects via a 50-ohm BNC socket.

Key Features

• Wideband UHF operation: 430–960 MHz

• Full 360° omnidirectional radiation pattern

• Passive design (no power required)

• Standard 50-ohm BNC connector

• Suitable for both transmission and reception

• Mounts on standard 5/8-inch and 3/8-inch mic stand threads

• Improves RF stability and reduces dropouts compared to stock antennas

• Ideal for fixed installations, live sound, broadcast and rental systems

Technical Specifications

• Frequency Range: 430–960 MHz

• Polar Pattern: Omnidirectional

• Gain: 0 dB (unity)

• Impedance: 50 ohms

• Connector: BNC female

• Maximum RF Input Power: 10 W

• Mounting: 5/8-inch thread with 3/8-inch adapter

• Operating Temperature: –20 °C to +80 °C