Sennheiser A 1031-U Passive Omnidirectional Antenna with BNC Connector

Passive omnidirectional UHF antenna for Sennheiser wireless receiver and transmitter systems

The Sennheiser A 1031-U is a passive omnidirectional receiving and transmitting antenna with a BNC connector and 3/8-inch mounting thread. Designed for Sennheiser wireless microphone and in-ear monitoring systems, the A 1031-U provides 360-degree RF coverage for applications where the antenna needs to receive or transmit signals from all directions without favoring a specific area of the stage or venue.

The omnidirectional pickup pattern makes the A 1031-U a versatile choice for most standard wireless deployments. Unlike directional antennas that must be aimed at the performance area, the A 1031-U works equally well regardless of transmitter position, making it simpler to deploy and more forgiving in venues where performer movement patterns are unpredictable.

Key Features

• Omnidirectional RF coverage for 360-degree reception and transmission
• BNC connector for standard wireless receiver and transmitter connections
• 3/8-inch mounting thread for mic stands and antenna mounting hardware
• Passive design requires no external power or DC bias
• Compatible with Sennheiser wireless receiver and IEM transmitter systems
• Compact form factor for flexible mounting options

Professional Applications

• General-purpose antenna for wireless microphone receiver racks
• Remote antenna placement on stands away from receiver equipment
• In-ear monitor transmitter antenna for stage-area coverage
• Small to mid-size venue and house of worship wireless deployments

Frequently Asked Questions

When should I use the A 1031-U instead of a directional antenna?

Use the A 1031-U when performers move freely across the stage and you need consistent coverage from all directions. Use a directional antenna when you need to focus coverage on a specific area or reject interference from a known direction.

Can the A 1031-U be used for in-ear monitor transmitting?

Yes. The A 1031-U can be used for both receiving (wireless microphones) and transmitting (in-ear monitors), providing omnidirectional coverage in both applications.

Related Equipment and Workflow Compatibility

The A 1031-U works with any Sennheiser wireless receiver or transmitter with a BNC antenna input, including the EW, 2000, 3000, and 5000 Series platforms. It can be combined with antenna splitters and coaxial cables for remote placement.

Why Professionals Use This Type of Product

• Omnidirectional pattern provides reliable coverage without precise aiming
• Passive design is simple, reliable, and requires no power
• 3/8-inch thread mounts on standard mic stands and antenna hardware
• Versatile compatibility across multiple Sennheiser wireless platforms

Additional Compatibility Information

The Sennheiser A 1031-U is a passive omnidirectional UHF antenna with BNC connector and 3/8-inch mount, compatible with Sennheiser wireless microphone receivers and in-ear monitor transmitters across the EW through 5000 Series platforms.