Amazon.com: Kenwood X302-4 eXcelon 50 Watts x 4 4-Channel Class D Amplifier : Electronics
Low Pass Filter 30 MHz 5000W
LAM Communications on X: "Kenwood LF-30A USED | 12 Months Warranty Low pass filter for shortwave reduces TVI and BCI. The filter is between transceiver and antenna, Impedance 50 Ω, insertion loss