Optimal frequency filtering: This bandpass filter is designed for 403 MHz applications, filtering out interfering frequencies and effectively isolating and enhancing signal transmission. Suitable for a variety of RF 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 RF filters are designed to withstand harsh use environments, ideal for amateur and professional applications. Ensures consistent performance, bringing value and efficiency to your project or communication setup. 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. Product appearance and printed text may vary by batch, but this does not affect functionality. Color: Green. Material: PCB. Package Contents: 1 x Band Pass Filter. Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual item. Measurement may vary by +/- 1-3cm.