Feature: 1. [Automatic Antenna Tuner] No control line required, suitable for most radio stations. Features a compact structure, easy to connect and carry, suitable for use at home or in vehicles. 2. [Premium Components] This antenna tuner utilizes HF32, 10A, HF33, 5A relay and 6KV high voltage ceramic capacitor, ensuring high performance. 3. [Wide Frequency Range] Covers 1.8 to 50MHz (specifically affected by antenna length and SWR deviation), making it versatile for various radio needs. 4. [Aluminum Alloy Shell] The antenna tuner outer shell is made of aluminum alloy, which is lightweight, quick heat dissipation, and erosion resistant. 5. [High Performance] The antenna tuner features higher capacitor rating, larger magnetic ring, thicker wire, and able to handle more power. Specification: Item Type: Automatic Antenna Tuner Material: Aluminum Alloy Tuning Impedance Range: 5Ω-1.2KΩ Power Supply Voltage Range: 10-15 VDC Maximum Current Consumption: 500 mA Maximum Working Power: 150W Minimum Power Required for Start Tuning: >5W Minimum Measurable Power: 0.1W Measurement Accuracy for Power not exceeding 10W: 0.1W Measurement Accuracy for Power exceeding 10W: 1W Maximum Inductance: 12.8uH Minimum Inductance Step: 0.1uH Maximum Installation Capacity: 1869 pF Minimum Installation Level of Capacitor: 10pF Maximum Power: SSB: 150W; CW, AM, FM: 130W Size: Approx. 88x150x38mm / 3.46x5.91x1.50in. Package List: 1 x Automatic Antenna Tuner 3 x Accessories