Features Designed for 40Hz Receiver: This filter boasts low in-band insertion loss and steep cutoff characteristics, making it ideal for specialized 40Hz receiving equipment High Efficiency Performance: Effectively filters out-of-band signals, reduces noise, and enhances dynamic range for clearer audio transmission Superior Signal Suppression: Offers excellent suppression of out-of-band remote signals, outperforming standard PCB bare board products for improved reliability Durable Aluminum Alloy Construction: Features a robust aluminum alloy shielded shell that minimizes interference and eliminates out-of-band spurious responses for optimal performance Compact and Space-Saving Design: The small size of this bandpass SAW filter ensures easy integration into your setup without occupying valuable space Features: 1、[FOR 40HZ RECEIVER] This filter has low in band insertion loss, with steep cut off characteristics, and is dedicated to 40Hz receiving equipment. 2、[HIGH EFFICIENCY] The filter can effectively filter out of band signals, reduce noise and increase dynamic range. 3、[GOOD SUPPRION] Good supprion of out of band remote signals, better than products made with PCB bare boards. 4、[ALUMINUM ALLOY] Use aluminum alloy shielded shell, with l interference and no out of band spurious response. 5、[COMPACT SIZE] The bandpass SAW filter is small and compact, easy to use and does not take up space. Specification: Item Type: Band Pass Filter Material: Aluminum alloy Model: FBP-403s Impedance: 50Ω Center Frequency: 403 MHz 1dB Passband: 401-405 MHz Insertion Loss: between2.5dB at 401-405 MHz Maximum Carrying Power: 100mW (20 dBm) Package List: 1 x Band Pass Filter Note: Do not overload to use. Package List 1 x Band Pass Filter