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Shure Incorporated

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***IEC power cord comes standard. Some regions come with multiple cords.

Optional Accessories

Passive Directional Antenna

Passive Omnidirectional Antenna

Helical Antenna

BNC-terminated Coaxial Cables

Antenna Cables from Shure

Shure offers antenna cables ranging from 6 to 100 feet.

Wireless Accessory Wizard

The Shure Wireless Accessory Wizard is a resource to help determine the correct RF accessories for your wireless system. 

You provide basic information about your setup and receive item recommendations and connection diagrams.

Go to 

https://www.shure.com/en-US/support/tools/wireless-accessory-wizard

 to access the Wireless Accessory Wizard.

IMPORTANT SAFETY INSTRUCTIONS

READ these instructions.

KEEP these instructions.

HEED all warnings.

FOLLOW all instructions.

DO NOT use this apparatus near water.

CLEAN ONLY with dry cloth.

DO NOT block any ventilation openings. Allow sufficient distances for adequate ventilation and install in accordance 

with the manufacturer’s instructions.

DO NOT install near any heat sources such as open flames, radiators, heat registers, stoves, or other apparatus (in­

cluding amplifiers) that produce heat. Do not place any open flame sources on the product.

DO NOT defeat the safety purpose of the polarized or grounding type plug. A polarized plug has two blades with one 

wider than the other. A grounding type plug has two blades and a third grounding prong. The wider blade or the third 

prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replace­

ment of the obsolete outlet.

PROTECT the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the 

point where they exit from the apparatus.

ONLY USE attachments/accessories specified by the manufacturer.

USE only with a cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a 

cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

UNPLUG this apparatus during lightning storms or when unused for long periods of time.

Summary of Contents for PA421B

Page 1: ...PA421B PA821B Antenna Combiner PA421B PA821B Antenna Combiner user guide Version 1 2 2022 F...

Page 2: ...tions 5 LED Indicators 5 PA421B and PA421BX 6 PA821B and PA821BX 6 Using Multiple Transmitters with a Single Antenna 6 Using Multiple Antenna Combiners with a Single Anten na 8 Specifications 9 RF Fre...

Page 3: ...l presence signal overload and current draw Model Variations Shure antenna combiners for Shure IEM wireless personal monitoring systems are available in four channel and eight channel rackmountable co...

Page 4: ...urrent draw The LED indicators on the PA821B and PA821BX display RF signal only See the section on LED Indicators for more information Fan Vents For system cooling Expansion Port Connect an IEM transm...

Page 5: ...t temperature at or below the maximum ambient temperature Tma specified by the manufacturer of the installed equipment Provide the proper amount of air flow inside the rack as required for safe operat...

Page 6: ...ut Green Device is powered on Red Current overload Off inactive PA421B and PA421BX PA821B and PA821BX The PA821B and PA821BX antenna combiners allow up to 8 transmitters to share a single antenna RF L...

Page 7: ...Shure Incorporated 7 15 Using Multiple Transmitters with a Single Antenna PA421B...

Page 8: ...hure Incorporated 8 15 PA821B Note Use external power supplies or an optional power distribution cable to supply power to additional transmitters The PA821B and PA821BX combiners do not supply DC powe...

Page 9: ...65 mm 1 7 x 15 8 x 14 4 in H x W x D Weight PA421B PA421BX 4 3 kg 9 5 lbs PA821B PA821BX 4 8 kg 10 5 lbs Operating Temperature Range 18 C 0 F to 63 C 145 F Power Requirements 100 to 240 V AC 50 60 Hz...

Page 10: ...Active Impedance 50 RF Gain 0 dB 2 dB RF Input Normal Operating Range up to 20 dBm max protected up to 24 dBm LED Indicator Minimum Detection Threshold to Activate Channel 2 5 dBm LED Indicator Overl...

Page 11: ...imum Detection Threshold 85 mA LED Overcurrent Indicator 660 mA RF Frequency Range Band Frequency Range PA421B 470 865 MHz PA421BX 865 960 MHz PA821B 470 865 MHz PA821BX 865 960 MHz Accessories Furnis...

Page 12: ...lation and install in accordance with the manufacturer s instructions DO NOT install near any heat sources such as open flames radiators heat registers stoves or other apparatus in cluding amplifiers...

Page 13: ...household waste It should be deposited at an appropriate facility to enable recovery and recycling Federal Communications Commission RF Exposure Notice Antennas used for the purpose of radiating sign...

Page 14: ...ation of Chemicals REACH Directive REACH Registration Evaluation Authorization of Chemicals is the European Union EU and the United Kingdom UK chemical substances regulatory framework Information on s...

Page 15: ...ire de brouillage L appareil doit accepter tout brouillage radio lectrique subi m me si le brouillage est susceptible d en compromettre le fonctionnement CE Notice Hereby Shure Incorporated declares t...

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