Shure PA821b
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Essential Information About the Shure SSX PA821B Antenna Combiner
Essential Information About the Shure SSX PA821B Antenna Combiner
- One antenna system for up to 8 PSM transmitters: wideband active combiner designed to simplify in-ear monitoring rigs both on tour and in installations.
- Fewer antennas, less clutter: integrated passive combiner (2 inputs / 1 output) to cascade two combiners and further reduce the number of transmitting antennas.
- Versatile transmission/reception: can also be used as a combiner for microphone receiver antennas, with active antenna power supply via internal DIP switches.
- Ready to wire: supplied with 8 BNC cables of 60 cm and 1 BNC cable of 30 cm, in a 1U 19" rack format.
Manufacturer Information
Shure
https://www.shure.com
------------------------
Safety manager:
Algam SAS
Email: contact@algam.net
Address:
A "pro" link at the heart of a Shure RF system
The Shure SSX PA821B targets demanding RF setups where the goal is clear: centralize antenna distribution and enhance infrastructure reliability. Originally designed for PSM transmitters, it naturally fits into a technical rack and helps streamline multi-transmitter setups by limiting the multiplication of antennas and cabling. Its additional asset, the 2-to-1 passive combiner, facilitates cascading expansion when the number of channels increases.
Who is it for, and in what applications?
This antenna combiner is ideal for monitor engineers, stage managers, contractors, and integrators managing multi-user in-ear monitoring systems. It is perfectly suited for stages where space is limited, mobile RF racks, and fixed installations requiring a clean architecture. Its capability for microphone reception use, with power supply for active antennas, also allows for a more flexible approach to optimize RF coverage according to the areas to be served.
Technical specifications
| Category | ear monitoring accessory | Weight | 4.8 kg |
| Type | antenna combiner | Dimensions (mm) | 43 x 401 x 365 |
| Format | 1U 19" rack | Connector type | BNC |
| Weight (kg) | 4.80 kg | Active combiner | wideband, 8 inputs, for PSM transmitters |
| RF bandwidth | 470 to 865 MHz | Integrated passive combiner | 2 inputs / 1 output, cascade of two antenna combiners |
| Max. permissible power | 24 dBm - 250 mW | Power supply for active antennas | via 10 internal DIP switches |
| Max. permissible power of the passive combiner | 33 dBm - 2 W | Supplied cables | 8 60 cm BNC cables and one 30 cm BNC cable |
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Questions frequently asked
Is the Shure PA821B suitable for a 19-inch rack?
Its 1U 19-inch rack size measures 43 x 401 x 365 mm and it weighs 4.8 kg.
How many in-ear transmitters can this combiner accommodate?
The 8 inputs allow centralizing multiple PSM transmitters on the same antenna infrastructure. The maximum permissible power is 24 dBm, or 250 mW.
Can two antenna combiners be cascaded?
The built-in passive 2-input / 1-output combiner allows cascading two units. Its maximum permissible power reaches 33 dBm, or 2 W.
What frequency range does the PA821B cover?
The RF bandwidth extends from 470 to 865 MHz. This wideband range adapts to setups using different frequency blocks. The antenna connectors use BNC connectors.
Can the PA821B power active antennas for wireless microphones?
Thanks to 10 internal DIP switches, powering active antennas can be enabled when used as a combiner for microphone receivers.
