Welcome to the store! Adds an audio amplifier to resolve extremely low volume issues on SSB single-sideband, with a noticeable effect. Redesigned FM and HF bandpass filters. An ESD tube is added to the input terminal for electrostatic protection and strong signal protection when transmitting in the UV section of dual antennas. Utilizes an FPC soft board with a thickness of 0.12mm, ensuring safety and reliability without short circuits. Speaker installation is not supported. Employs high-quality, high-frequency wire-wound chip inductors with a high Q value, low internal resistance, and strong filtering selectivity. In the dual-antenna solution, an additional bandpass filtering level is added to the antenna input, and a feeder and SMA are used for an HF antenna from the LED, which does not affect the machine's UV performance. The FPC soft board uses a double-sided board, making it easier to connect to the machine. Applicable models: For uv k5/k6. Due to different batches, there may be differences in product appearance, color, and printed text, which do not affect use. Color: Orange Yellow Material: PCB Package Contents: 1x Module 1x 2M Expansion Chip 1x USB Programming Cable Only the above package content is included; other products are not. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm. Your satisfaction is our top priority. We will provide you with the best service. If you encounter any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately, and we will provide you with the best solution!