553-401, 400-800 MHz Directional Coupler Element
for 3-1/8" EIA Line Section
The Bird 553-401, Coupler Element is are used for RF sampling. The wattmeter does not read when these elements are installed, but simply serves as a line section.
Bird cannot guarantee that the reading error will not exceed ±5% of full scale unless the element is calibrated in the proper wattmeter.
- Frequency Range: 400-800 MHz
- Nominal Coupling: -55dB
- Main Line Power: 15kW (max)