This antenna is a narrow-band high-impedance resonant antenna, which needs to be used with the high-impedance input port of the Malachite receiver, otherwise the antenna will be detuned and cannot work! ! Specifications: Color: Blue / Red Blue: SW shortwave antenna Frequency range: 4MHz-24MHz Red: AM(MW) Medium Wave Antenna Frequency Range: 500kHz-2000kHz Package included: Blue 1 x SW Antenna (Blue color)