Features: The PUEO6552 Filter Connector is essential computer adapter accessory enhances Connector and performances for your devices. This product is 9First order series high pass filter，Passband（160～500MHz ）Insertion loss less than 1.50dB;Stopband（leaa than 110MHz）Greater than insertion loss 40dB Small Size and With solid aluminum shielding shell，It can be directly inserted into the antennae system. Strong filtration 140MHz The following frequency signal，be used for VHF144MHz、UHF（433～470MHz）radio station、Receiver. It can effectively suppress the interferences and medium and shortwave radio stations Specifications: Model：FHP9s-144 Impedance：50 Ohms Insertion loss （Passband）： 2.50dB 144MHz ，less than 1.50dB ； 160 ～ 500MHz Insertion loss （Stopband）： not less than 40dB Not more than 110MHz Connector：SMA-M，SMA-F Package Includes: 1PC FHP9s-144 Filter SMA Connector note: This product is not waterproof. Due to problems of lighting effect there will be certain tolerances in product, please understand. Please allow 0-1cm error due to manual measurement.