Fangrui Product Details Low In Band Insertion Loss: The Bandpass Filter Has Low In Band Insertion Loss And Steep Cut Off Characteristics. Anti Interference Shell: The Saw Bandpass Filter Shell Is Anti Interference And Has No Out Of Band Spurious Response. Impedance: 50ohms Easy To Use And Carry: The Receiver Band Pass Filter Is Small In Size, Sturdy, Easy To Use And Convenient To Carry Excellent Performance: The Inside Of The Receiver Filter Is Ultra Thin Pcb Board, Has Excellent Suppression Ability For Out Of Band Remote Signals, And The Performance Is Far Superior To Products Made With Bare Pcb Boards. Application: This Filter Is Dedicated To 403mhz Receiving Equipment To Optimize Its Performance, Effectively Filter Out Of Band Signals, Reduce Noise, And Increase Dynamic Range Specification: Item Type: Bandpass Filter Impedance: 50ohms Center Frequency: 403mhz 1db Passband: 401-405mhz Insertion Loss: Less Than 2.5db At 401-405mhz Maximum Carrying Power: 100mw (20dbm) Color: As Shown Material: Metal Package Contents: 1 X Ban