Features: A radio frequency filter is a electronic component specifically for processing radio frequency signal and plays a important role. Its main function is to allow signal within a specific frequency ranges to pass. Effectively suppressing or attenuating unwanted frequency components, thereby ensuring the purities and quality of signal. Radio frequency filters widely used in fields such as wireless communication and systems, and is key components for achieving signal selection and interferences suppression. 2 pattern optional, with aluminum shell, SMA thread connector, long service life. Specifications: Material: Metal Frequency: 416MHZ/1090MHZ BW: ±15MHz Connector: SMA Shell Material: Aluminum Pattern: 416MHz/1090MHz Package Includes: 1pc Bandpass Filter note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.