ATU-100 Automatic Antenna Tuner for Ham Radio, 1.8-55MHz 100W Shortwave Amateur Radio Tuner Rechargeable with 5000mAh Battery, Low SWR Portable Antenna Matcher for POTA SOTA DX

["5000mAh Battery for Outdoor Mobility: ATU-100 tuner provides long-lasting power for extended field operations like POTA, SOTA, and DXing; lightweight and compact, perfect for ham radio enthusiasts in the fields","Fast & Precise 1.8-55MHz Automatic Tuning: Quickly adjust impedance to optimize signal reception across a wide frequency range - automatically finds the best match for your antenna, saving time and ensuring consistent, stable transmissions","Versatile Antenna Compatibility: This external antenna tuner works seamlessly with dipole, vertical, ground, and loop antennas - Whether you are setting up for emergency communications or a casual outdoor radio session","HD OLED Display & Real-time Data: The OLED screen provides clear, easy-to-read data, including input power and SWR levels, convenient to track performance at a glance, reducing the complexity of manual adjustments","Professional TEST MODE & Manual Tuning: For advanced users, pressing \"AUTO\" and \"BYPASS\" during power-on activates TEST MODE allows for manual step-by-step adjustment of capacitance and inductance values to achieve the perfect tune","Durable Construction: Crafted with a robust metal shell and professionally soldered internal circuits, this tuner is designed for long-term durability, ensuring stable performance for operations from a home base or a rugged outdoor field station","Caution: To protect battery health, do not expose the device to high temperatures (such as inside a vehicle) for extended periods"]