The Bird 100C is a plug-in element designed for use with Bird 43 series Thruline wattmeters, enabling the measurement of forward and reflected continuous wave (CW) radio frequency (RF) power in coaxial transmission lines. This element is specifically engineered for the 100 to 250 MHz frequency range and has a maximum power rating of 100 watts. It is designed to be inserted into the line section of compatible wattmeter bodies. The Bird 100C element is part of a comprehensive system that allows for precise RF power measurements, with accuracy typically within ±5% for full-scale readings.
### Technical Specifications
* **Manufacturer:** Bird Technologies Group
* **Model Number:** 100C
* **Product Type:** RF Wattmeter Plug-in Element
* **Frequency Range:** 100 MHz to 250 MHz
* **Maximum Power Rating:** 100 Watts
* **Full-Scale Accuracy:** ±5%
* **Signal Type:** Continuous Wave (CW)
* **Application:** Measures forward and reflected power in coaxial transmission lines
* **Compatibility:** Designed for use with Bird 43, 4430, 4431, 4381, 4385, and 4520 series wattmeters. Also compatible with Bird 4304A. Elements are calibrated to ensure field interchangeability with equipment purchased over many years. Coaxial Dynamics elements are 100% compatible with Bird elements.
* **Connectors:** Utilizes Bird Quick-Change (QC) connectors for easy interchangeability.
* **Insertion Loss:** Low added insertion loss.
* **VSWR:** Low added VSWR.
### Electrical Specifications
* **Power Measurement Range:** 0 to 100 Watts (full scale)
* **Frequency Response:** Within the specified range of 100-250 MHz, the element provides consistent performance. Representative frequency response curves indicate that at the band edges, readings might be slightly lower than true values due to inherent losses, e.g., at 40 MHz, a 10C element might read 4 dB low, while a 100C element might read approximately 1 dB low, corresponding to about 80% of the true value.
### Physical Characteristics
* **Construction:** Rugged metal housing for demanding environments.
* **Type:** Plug-in element, often referred to as a “slug”.
* **Connectors:** Features Bird’s Quick Change (QC) connectors.
### Compatibility
* **Wattmeter Bodies:** Compatible with Bird Model 43, 4304A, 4430, 4431, 4381, 4385, and 4520 series wattmeters.
* **Element Series:** Part of the “C” series of plug-in elements.
* **Other Manufacturers:** Coaxial Dynamics elements, such as the 82032, are stated to be 100% compatible with Bird 100C elements.
### Operation and Usage
* The Bird 100C element is designed for insertion into the line section of compatible Bird wattmeters.
* It is used for measuring both forward and reflected CW power in coaxial transmission lines under various load conditions.
* The element’s calibration is maintained through meticulous Bird calibration procedures.
* Care should be taken to avoid dropping or subjecting the element to hard blows, as calibration could be disturbed.
Why Choose Aumictech for Bird 100C?
At Aumictech, we specialize in supplying high-end RF test and measurement equipment. Whether you need accurate power readings for communication systems, reliable measurements for broadcast equipment, or robust components for industrial RF applications, our team ensures the Bird 100C element delivers maximum performance for your application.


















