Description The PA821B Antenna Combiner from Shure is designed to optimize RF management for Shure PSM Personal Stereo Monitor systems. It can be used when multiple systems are required for monitoring on stage, theater, and rehearsal applications.The combiner efficiently optimizes up to eight PSM transmitters (sold separately) when racked in a central location, while also reducing rack clutter. It is built with LED indicators for signal overload and signal presence. Additionally, the unit’s fan design improves thermal efficiency and ambient noise. FeaturesCombines up to eight PSM transmitters to a single antenna setImproved intermodulation artifacts for cleaner RF environmentReduces rack clutterDaisy-chain up to 2 combiners with the expansion portLED indications of signal presence, signal overloadImproved fan design significantly improves thermal efficiency and ambient noiseSpecificationsRF Frequency Range470 to 865 MHzImpedance50 OhmsOperating Temperature Range0 to 145°F (-18 to 63°C)Power Requirements100 to 240 VAC, 50-60 HzCurrent Drain1.59 A (referenced at 100 VAC) (159 VA)Power Consumption143 W maximumRF Input SpecsConnector TypeBNCConfigurationActiveImpedance50 OhmsRF Gain0 dB (±2 dB)LED IndicatorMinimum Detection Threshold: 2.5 dBm Overload Threshold: >24 dBmMain OutputsConnector TypeBNCImpedance50 OhmsExpansion FeaturesConnector TypeBNCConfigurationPassiveImpedance50 OhmsInsertion Loss<4 dBRF Expansion Port Normal Operating Range33 dBm (2 W)DimensionsNot specified by manufacturerWeightNot specified by manufacturerPackaging InfoPackage Weight17.6 lbBox Dimensions (LxWxH)27.3 x 17.6 x 3.9″
