It is suitable for installing S14732 soft board FPC and modifying HF shortwave full-band reception/single sideband reception. It is suitable for single antenna and dual antenna. Upgrade content includes adding an audio amplifier, redesigning FM and HF bandpass filters, and adding an ESD tube for electrostatic protection. The board uses FPC soft board, high-quality high-frequency wire-wound chip inductors, and a double-sided disk for easier connection to the original machine. Applicable models include Quansheng uv k5/k6. The package includes 1 set walkie-talkie modification board.