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Shure Incorporated

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These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equip­

ment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, 

may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a 

particular installation. If this equipment does cause harmful interference to radio or television reception, which can be deter­

mined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the fol­

lowing measures:

Reorient or relocate the receiving antenna.

Increase the separation between the equipment and the receiver.

Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.

Consult the dealer or an experienced radio/TV technician for help.

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

This device may not cause harmful interference.

This device must accept any interference received, including interference that may cause undesired operation.

The equipment is intended to be used in professional audio applications.

For information regarding responsible party and other matters relating to FCC compliance, please contact Shure Incorporated, 

5800 W. Touhy Avenue, Niles, Illinois 60714-4608 U.S.A. 

shure.com/contact

Registration, Evaluation, Authorization 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 substances of very high concern contained in Shure products in a 

concentration above 0.1% weight over weight (w/w) is available upon request.

Please consider the environment, electric products and packaging are part of regional recycling schemes and do not belong to 

regular household waste.

LICENSING INFORMATION

Licensing: A ministerial license to operate this equipment may be required in certain areas. Consult your national authority for 

possible requirements. Changes or modifications not expressly approved by Shure Incorporated could void your authority to 

operate the equipment. Licensing of Shure wireless microphone equipment is the user’s responsibility, and licensability de­

pends on the user’s classification and application, and on the selected frequency. Shure strongly urges the user to contact the 

appropriate telecommunications authority concerning proper licensing, and before choosing and ordering frequencies.

Certifications

Conforms to electrical safety requirements based on IEC/EN 62368-1.

Certified under FCC Part 74.

Certified by ISED in Canada under RSS-123.

FCC ID: 

DD4PA421B. 

IC: 

616A-PA421B.

FCC ID: 

DD4PA421BX. 

IC: 

616A-PA421BX.

FCC ID: 

DD4PA821B. 

IC: 

616A-PA821B.

FCC ID: 

DD4PA821BX. 

IC: 

616A-PA821BX.

This Class B digital apparatus complies with Canadian ICES-003. Cet appareil numérique de la classe B est conforme à la 

norme NMB-003 du Canada.

Notice: 

The Industry Canada regulations provide that changes or modifications not expressly approved by Shure Inc. could 

void your authority to operate this equipment.

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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