Description
The Shure PA821B-TA 8-Channel Antenna Combiner is a professional RF management solution designed to streamline and optimize multi-channel in-ear monitoring systems. Built for use with Shure PSM systems, this combiner allows up to eight transmitters to share a single antenna, significantly reducing rack clutter while improving RF performance and signal clarity.
Engineered for reliability in demanding environments, the PA821B-TA minimizes intermodulation distortion and enhances overall RF efficiency, ensuring stable and consistent wireless monitoring. Its wideband operation across the 470–865 MHz range supports flexible deployment across multiple frequency bands, while integrated LED indicators provide real-time monitoring of signal presence and overload conditions.
With its robust build, efficient thermal design, and support for system expansion via daisy-chaining, the PA821B-TA is ideal for touring professionals, broadcast environments, and large-scale live productions requiring clean, centralized RF distribution.
| Specification | Details |
|---|---|
| Product Type | Antenna Combiner for Wireless Monitoring Systems |
| Channel Capacity | Supports up to 8 transmitters |
| Frequency Range | 470 to 865 MHz |
| RF Input Connectors | BNC, active configuration |
| RF Output Connector | BNC main output |
| Expansion Port | BNC passive port for daisy-chaining |
| RF Gain | 0 dB (±2 dB) |
| Expansion Port Insertion Loss | Less than 4 dB |
| RF Expansion Port Range | Up to 33 dBm (2 W) |
| Impedance | 50 ohms |
| LED Indicators | Signal presence and overload detection |
| Power Requirements | 100 to 240 V AC, 50 to 60 Hz |
| Power Consumption | Up to 143 W |
| Current Draw | 1.59 A at 100 V AC |
| Operating Temperature | -18°C to 63°C |
| Cooling Design | Enhanced thermal efficiency with low-noise fan |
| System Expansion | Supports daisy-chaining of up to 2 units |
| Included Accessories | Power cable, DC power cables, coaxial cables |
| Compatibility | Designed for Shure PSM wireless systems |
Payment & Security
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Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
From Scope to Sign-Off
A structured delivery process designed to reduce risk and keep projects moving.
Plan
Discovery, site review, requirements gathering, and project alignment. We define scope, constraints, and success criteria before any design work begins.
- Discovery calls & stakeholder interviews
- On-site survey & infrastructure review
- Requirements & use-case documentation
- Project scope, timeline & milestone alignment
Engineer
System design, schematics, signal flow, BOM development, and documentation. Every project leaves this phase with a complete engineering package.
- AV system design & signal flow diagrams
- Equipment selection & BOM development
- Rack layout & control system design
- As-built documentation package
Deploy
Procurement, logistics, installation, programming, commissioning, and training. We own the delivery from first shipment to final handoff.
- Authorized procurement & logistics coordination
- Physical installation & cable management
- Control system programming & configuration
- Commissioning, testing & end-user training
Support
Monitoring, maintenance, lifecycle planning, and long-term service agreements. We stay engaged long after project close.
- 24/7 remote system monitoring
- Preventive & reactive maintenance
- Technology lifecycle & refresh planning
- Long-term service level agreements
A decade of delivery — trusted by 275+ clients across industries
