1.8‑50MHz 200W Micro Shortwave Automatic Antenna Tuner 10‑15VDC Organic Light Emitting Diode Display Item Type: Automatic Antenna Tuner Model: ATU-130 Material: Aluminum Alloy Power Supply Voltage Range: 10-15VDC (+in the center) Maximum Current Consumption: 500mA Maximum Working Power: 150W Starting Tuning Minimum Power: 5W Minimum Measurable Power: 0.1W Measurement Accuracy Up to 10W Power: 0.1W Measurement Accuracy Greater Than 10W Power: 1W Maximum Installed Inductance: 8.53μH Minimum Installation Inductancee: 0.05μH Micro Automatic Antenna Tuner Features: Has the function of power meter standing wave meter (according to BYPASS, straight through mode, one horizontal line in the middle of the screen, the test value is approximate, and the accuracy is lower than that of professional high accuracy meter, for reference). PIC18F2520, MCU (quicker). Short wave machine automatic antenna tuner The third edition adopts the design of 4 large magnetic ring inductors, which generates less heat than the original edition. HF32, 10A, HF33, 5A relays are used. High voltage porcelain chip capacitor is adopted. The maximum measurable value is SSB 275w. It is recommended that the SSB should not exceed 200w for a long time. For other continuous modes, the power shall not be greater than 100W (FT8, CW, FM, when the standing wave deviation is large before adjustment, the power shall be reduced as appropriate, and it is recommended e 10min interval for 5min). Size: Approx. 38 x 88 x 155mm / 1.5 x 3.5 x 6.1in (excluding projections) Weight: Approx. 0.5Kg / 17.6oz (portable, suitable for vehicle, indoor and outdoor fixation, etc.) 1.8-50MHz (specifically affected by antenna length and standing wave deviation). Tuning Impedance Range: 5Ω-1.2KΩ Application: Can be used for long line (recommended), GP (recommended), inverted V, bipolar, end fed and other antennas to adjust standing wave and match short wave machine impedance.