This tool set as part of an amplifier or transceiver, or as the separate device performing the function of matching the output impedance of the power amplifier (PA) to the antenna feeder, come on and try it, it will not let you down. Features: This is an DIY set, so you need to assemble it by yourself, which can improve your manipulative ability. It can work effectively in broadband, overlapping radio amateur HF bands from 1.8mhz to 50MHz. The max current consumption is 400mAh, and it with 7 inductance and 7 capacitance. It is easy for you to carry, so you can take it with you to anywhere you want to use it. With the OLED screen, which can let you see clearly the data, give you a better using experience. Specifications: Material: PCB Max current consumption: 400mAh Step for measurement on powers under 10 watts: 0.1 watt Step for measurement on powers above 10 watts : 1 watt Power measurement accuracy : 10% Maximum inductance set: 8.53uH Minimal step for setting inductance: 0.05uH Maximum installed capacitance: 1869pF Minimal installed capacitance: 10pF Item size: 128 * 62 * 20mm / 5.0 * 2.4 * 0.8in OLED size: 28 * 27mm / 1.1 * 1.1in Item weight: 129g / 4.6ounce Package size: 170 * 80 * 20mm / 6.7 * 3.1 * 0.8in Package weight: 188g / 6.6ounce Packing list: 1 * PCB 1 * OLED 1 * Accessory