DESCRIPTION:
The Bird Technologies 4028A25M Directional Power Sensor is a precision, high-power RF measurement sensor engineered to provide directional forward and reflected power readings across the 25 MHz to 30 MHz frequency range. It is part of Bird’s 4028 Series Precision RF Directional Thruline Power Sensors, a family of robust sensors designed for demanding high-power RF applications.
The 4028A25M is typically used with compatible multifunction power meters such as the Bird 4421A Series, delivering ±2 % accuracy at calibrated frequencies and power levels and ±3 % outside calibrated conditions within its specified range. Calibration is traceable to the National Institute of Standards and Technology (NIST), ensuring confidence in measurement integrity and repeatability.
This sensor is suited for high-power RF environments such as industrial RF systems, broadcast infrastructure, and manufacturing process monitoring where precise measurement of forward and reflected RF power is critical. Connector configurations are customer-specified upon ordering; published accuracy applies only when the sensor is supplied with the installed calibrated connectors.
Typical Use Suitability:
Ideal for high-power RF measurement and diagnostics in engineering labs, production floors, and industrial RF environments — particularly where accurate forward and reflected power data in the 25 MHz to 30 MHz band is required.
Key Features
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Frequency Range: 25 MHz to 30 MHz — suited for low-VHF RF systems.
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Power Handling: 1.0 kW to 25 kW typical, depending on connectors.
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Accuracy: ±2 % at calibrated frequency and power levels; ±3 % outside calibration.
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Directional Sensing: Measures both forward and reflected power for comprehensive diagnostics.
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VSWR: Typically 1.05:1 maximum (with appropriate connectors).
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Insertion Loss: Typically 0.05 dB (with female 7-16 DIN connectors).
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Directivity: 28 dB minimum for improved measurement separation.
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Impedance: 50 Ohm nominal.
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NIST-traceable calibration for confidence in long-term measurement integrity.
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Designed for use with Bird 4421A Series multifunction power meters and similar platforms.