Shure PA421B Wideband Antenna Combiner 470-865 Megahertz
Shure PA421B Wideband Antenna Combiner 470-865 Megahertz
Shure PA421B Antenna Combiners are complementary accessories for Shure PSM® Personal Stereo Monitor systems. When multiple systems are required for monitoring applications, the PA421B combiners quietly and efficiently optimize RF management for up to four PSM® transmitter, while also reducing rack clutter. (Directly replaces PA421A.)
Features:
- Combines up to four PSM® transmitters to a single antenna set
- Improved intermodulation artifacts for cleaner RF environment
- Reduces rack clutter
- Wideband operation (470-865 MHz)
- Daisy-chain up to 2 combiners with the expansion port
- Provides DC power to compatible IEM transmitters
- LED indications of signal presence, signal overload and current draw
- Improved fan design significantly improves thermal efficiency and ambient noise
- Optional modification to enable combining of microphone receiver antennas (contact Shure Service Department for more details)
- Provides +15V bias on RF inputs to power antennas
- Requires modification of unit by qualified service technician
Specifications
- RF Frequency Range: 470-865 MHz
- Impedance: 50 Ω
- Operating Temperature Range: −18 °C (0 °F) to 63 °C (145 °F)
- Power Requirements: 100 to 240 V AC, 50-60 Hz
- Current Drain: 1.09 A (referenced at 100 V AC) (109 VA)
- Power Consumption: 98 W max.
- RF Input:
- Connector Type: BNC
- Configuration: Active
- Impedance: 50 Ω
- RF Gain: 0 dB (±2 dB)
- LED Indicator Min. Detection Threshold: 2.5 dBm
- LED Indicator Overload Threshold: >24 dBm
- Main Output:
- Connector Type: BNC
- Impedance: 50 Ω
- Expansion Port:
- Connector Type: BNC
- Configuration: Passive
- Impedance: 50 Ω
- Insertion Loss: <4 dB
- RF Expansion Port Normal Operating Range: 33 dBm (2 W)
- DC Outputs:
- Output Voltage: 15 V DC
- Output Current (Per Output): 660 mA max
- Output Power (Per Output): 9.9 W
- LED Indicator Min. Detection Threshold: 85 mA
- LED Indicator Overload Threshold: >660 dBm
