User Manual for Sennheiser A 1031-U Omnidirectional UHF Antenna

Important information from the manual

The Sennheiser A 1031-U is an omnidirectional UHF antenna designed for both indoor and outdoor professional use. This document provides essential safety guidelines, installation requirements, and technical specifications. Always ensure the antenna is secured with safety wires to prevent falling or tipping. Before connecting the antenna, reduce the volume on connected audio devices to prevent acoustic feedback and potential damage to hearing or loudspeakers.

Product overview

The antenna features a 5/8 inch internal thread for stand mounting (a 3/8 inch adaptor is included) and an RF out socket (N-type) for signal connection.

Safety instructions

• Read and keep these safety instructions and the manual.
• Do not open the product housing; doing so voids the warranty.
• Refer all servicing to qualified service personnel.
• Use only attachments, accessories, and spare parts specified by the manufacturer.
• Do not use solvents or aggressive cleaning agents for cleaning.
• Keep liquids and electrically conductive objects away from the product and its connections.
• Route cables so that no one can trip over them.
• Do not operate the product if it was damaged during transport.

Intended use

The product is designed for indoor and outdoor use and is suitable for commercial purposes. Any use other than that described in the instruction manual is considered improper use. Sennheiser accepts no liability for damage arising from improper use or misuse.

Antenna safety

Secure antennas against falling or tipping using safety wires. The safety wires, rope terminations, and coupling links must comply with the regulations and standards of the country in which they are used.

Technical specifications

• Frequency range: 430 MHz - 960 MHz
• Apex angle (horizontal): 360 degrees
• Deviation from circular radiation: < 3 dB
• Gain: 0 dB
• Connector: BNC socket, 50 Ohm
• Max. input power: 10 W
• DC input resistance: ≥ 1 MΩ
• Ambient temperature: -20 °C to +80 °C
• Relative air humidity: max. 95% at 40 °C (non-condensing)
• Dimensions: 270 x 130 x 35 mm
• Weight (with booster): approx. 150 g
• Mounting connection: 5/8 inch thread (adaptor for 3/8 inch included)

Disposal and compliance

The product must be disposed of separately from household waste at the end of its service life. Please follow local regulations for the disposal of electrical and electronic equipment and batteries. The product complies with the WEEE Directive (2012/19/EU) and the RoHS Directive (2011/65/EU). The full text of the EU declaration of conformity is available at www.sennheiser.com/download.