Travel Radio Accessory Power Frequency Inverter - Inverter And Solar Correction Inverter Shortwave Radio Frequency Converter Seamless Compatibility: Effortlessly switch between high impedance converters and aviation frequency converters for optimal reception. Lenze SMVector Frequency Inverter | Inverters | Motion World Specification: Item Type: AIR to AM HIZ AMP Frequency Converter Material: Aluminum Alloy Battery: Battery x 1 Battery Capacity: 700mAh (shipped with built in battery) AIR to AM+HIZ AMP (1k-150m) How to Use: Connect and start using Package List: 1 x AIR to AM HIZ AMP Frequency Converter 1 x USB Cable The main feature converts aviation band signals from 118-138MHz to the SW shortwave band, meaning you can listen to air traffic control, pilot communications... Portable and Convenient: Compact design with a built in 700mAh battery and USB C charging port makes this frequency converter necessary for home, travel, and radio listening on the go. Frequency Inverter/variable Speed Drive/ac Motor Speed Controller-zvf9v Wide Frequency Coverage: Easily receive aviation band by converting 118 to 138MHz to the SW shortwave band, expanding the capabilities of your regular radio receiver.