<p>1. Add an audio amplifier to solve the problem of extremely low volume of SSB single sideband, and the effect is obvious.</p> <p>2. Redesign FM and HF bandpass filters</p> <p>3. 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.</p> <p>4. Use FPC soft board, the board thickness is 0.12mm, safe and reliable without short circuit, and the installation does not support the speaker.</p> <p>5. Use high-quality high-frequency wire-wound chip inductors with high Q value, small internal resistance, and strong filtering selectivity.</p> <p>6. In the dual-antenna solution, an additional level of band-pass filtering is added to the antenna input end, and a feeder and SMA are used to an HF antenna from the LED, which does not affect the UV performance of the machine.</p> <p>7. The FPC soft board uses a double-sided disk, which is easier to connect to the machine.</p> <p>Applicable models:For uv k5\/k6</p> <p>Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use.</p> <p>Colour:Orange Yellow</p> <p>Material:PCB</p> <p>Package Contents:</p> <p>1x Module</p> <p>1x 2M Expansion Chip</p> <p>1x USB Programming Cable</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>