Key benefits Down converts the 118 MHz to 138 MHz aviation band to the shortwave band usable by ordinary radios, enabling aviation band reception with standard receivers. Provides impedance antenna input matching for malachite or standard 50 ohm input receivers and mobile phones, improving compatibility and performance. Compact and portable design with a built in 700 mAh battery and USB C charging, suitable for travel and on the go listening. Supports conversion between impedance converter mode and aviation frequency converter mode, delivering good matching with magnetic rods, passive small loop antennas, rod/whip antennas, and other antenna types to enhance reception. Reliable and practical tool for aviation and shortwave listening, suitable for travelers and hobbyists alike. Function and compatibility Function: 118138 MHz aviation band is down converted for reception on SW band receivers, enabling ordinary radios to pick up aviation frequencies. Compatibility: Works with impedance converter and aviation frequency converter modes to achieve good impedance matching across a range of antennas and devices. Antenna support: Compatible with magnetic rods, passive small loop antennas, rod/whip antennas, and other antenna configurations to improve reception. Input matching: impedance input matching available for malachite or standard 50 ohm input receivers and mobile phones. Size, power and charging Compact and portable design for easy transport and field use. Built in 700 mAh battery for portable operation. USB C charging for convenient power replenishment. Use scenarios Travel and on the go listening: Take it on trips or commuting to convert the aviation band for reception on a standard radio or a mobile device, enhancing in flight listening or airport area monitoring. Field monitoring with antennas: Pair with magnetic rods or small loop antennas to receive aviation frequencies and shortwave signals in remote locations with improved matching and reception. Hobbyist experimentation: Use with malachite or 50 ohm input receivers to explore the effects of impedance and aviation frequency conversion on reception quality.