DESCRIPTION:
The Bird Technologies 4028A3M Directional Power Sensor is a precision, high-power RF measurement sensor engineered to provide directional forward and reflected power readings across the 2.5 MHz to 3.5 MHz frequency range. As part of Bird’s 4028 Series Precision RF Directional Thruline Power Sensors, it delivers ±2 % accuracy at specified calibration frequencies and power levels and ±3 % outside calibration when used with compatible multifunction power meters such as the Bird 4421A Series.
Designed for high-power continuous wave (CW) RF environments — including semiconductor processing, industrial RF systems, and broadcast infrastructure — this sensor provides stable, repeatable measurements for critical forward and reflected power verification. It is calibrated with full NIST traceability for measurement confidence and long-term reproducibility. Connector configurations must be specified when ordering to ensure the calibrated accuracy applies to the installed connectors.
Typical performance characteristics include a power handling range from approximately 1.0 kW to 25 kW, low insertion loss, strong directivity, and VSWR performance that support precise RF system analysis.
Typical Use Suitability:
Ideal for high-power RF measurement and diagnostics in engineering laboratories, production test floors, and industrial RF environments where accurate forward and reflected power data at low HF frequencies is needed.
Key Features
-
Frequency range of 2.5 MHz to 3.5 MHz for low HF RF systems
-
High power coverage: typically 1.0 kW to 25 kW with appropriate connectors
-
±2 % accuracy at calibrated frequency and power levels (±3 % outside calibration)
-
Directional sensing of forward and reflected power
-
Low insertion loss supportive of precision measurement
-
Strong directivity for improved forward/reflected separation
-
Calibration traceable to NIST for confidence in measurement integrity
-
Compatible with Bird 4421A Series multifunction power meters and similar platforms