Features 1、【Designed for Mediumwave and Shortwave Reception】: It is specifically designed to filter and enhance the reception of medium and shortwave signals, improving clarity and reducing interference. 2、【Designed Against Interference】: Helps to reduce unwanted high-frequency noise and interference, improving the overall listening experience and signal stability. 3、【Effective Signal Filtering】: Provides effective low-pass filtering to ensure clear reception, making it suitable for amateur radio enthusiasts and professionals who need reliable signal quality. 4、【Compact Size & Lightweight Design】: It is compact and lightweight, making it easy to integrate into portable and stationary radio setups. 5、【Premium Material & Easy Installation】: Adopts quality electronic parts with an accurate process, which ensures long durability and long service time. It is easy to install, making it accessible for both beginners and experienced users. Specification Name: Low Pass Filter Material: printed circuit board + metal Item size: 28 * 9mm / 1.10 * 0.35in Item weight: 5g / 0.18ounce Package size: 52 * 10 * 10mm / 2.05 * 0.39 * 0.39in Package weight: 7g / 0.25ounce Package List Packing List: 1 * Low Pass Filter