Supports conversion between impedance input and aviation frequency conversion, enabling flexible use across different radio setups. Provides impedance antenna input matching for malachite or standard 50 ohm input receivers and mobile phones, helping to maximize signal transfer and reduce loss. Delivers good impedance matching with a range of antennas, including magnetic rods, passive small loop antennas, rod/whip antennas, and other types, to improve reception performance. Enables downconversion of the 118 MHz to 138 MHz aviation band to the shortwave (SW) band received by ordinary radios, allowing aviationband reception with standard radios. Use scenarios Aviationband listening with a regular shortwave radio: downconvert the 118138 MHz aviation band so an ordinary SW radio can receive air traffic communications. Flexible antenna setups in the field: pair with magnetic rods, small loop antennas, rod/whip antennas, or other compatible antennas to optimize reception in outdoor or portable environments. Compatible with malachite or standard 50 ohm input receivers and mobile devices: connect to suitable receivers or mobile phones to access aviationband content using common equipment.