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
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Wideband UHF operation: 430–960 MHz
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Full 360° omnidirectional radiation pattern
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Passive design (no power required)
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Standard 50-ohm BNC connector
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Suitable for both transmission and reception
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Mounts on standard 5/8-inch and 3/8-inch mic stand threads
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Improves RF stability and reduces dropouts compared to stock antennas
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Ideal for fixed installations, live sound, broadcast and rental systems
Technical Specifications
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Frequency Range: 430–960 MHz
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Polar Pattern: Omnidirectional
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Gain: 0 dB (unity)
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Impedance: 50 ohms
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Connector: BNC female
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Maximum RF Input Power: 10 W
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Mounting: 5/8-inch thread with 3/8-inch adapter
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Operating Temperature: –20 °C to +80 °C
