Optimal frequency filtering: This bandpass filter is designed for 403 MHz applications, filtering out interfering frequencies, effectively isolating and enhancing signal mission Suitable for a variety of applications, ensuring clearer communications and signal processing High performance: No external power supply is required to maintain signal integrity, efficient and environmentally friendly construction: Our filters are designed to withstand harsh use environments, ideal for amateur and professional applications It ensures consistent performance, bringing value and efficiency to your project or communication setup<br><br>Operating frequency: 403±2.5MHz Insertion loss: 1.7db Out-of-band suppression: 60dB@50MHz Input impedance: 50 ohms Output impedance: 50 ohms Maximum input signal strength: 20dbm (100mw) Input interface: SMA-K (SMA female) Output interface: SMA-K (SMA female) No power supply required The product appearance and printed words depending on batch, but this does not affect use. Color: Green Material: PCB<br><br>Package Contents: 1 * Band Pass Filter<br><br>Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.