1. Automatic Tuning: The antenna tuner adopts automatic tuning, the ATU (Automatic Antenna Tuner) KIT independently developed by N7DDC, equipped with an screen, and the data is clearly visible. 2. High Quality Capacitors: The antenna tuner uses high chip capacitors, C channel capacitors, 1000V high voltage chip capacitors, and PIC chips. 3. Radio Amateur Frequency Band: The antenna tuner can work effectively in the broadband overlapping radio amateur HF frequency band from 1.8mhz to 50MHz. The maximum current consumption is 400mA, 7 inductance and 7 capacitance. 4. Easy to Carry: This is a portable antenna tuner, so you can take with you wherever you want to use. 5. Interesting Install: The easy to install antenna tuner allows you to enjoy the fun of assembly, and is more professional, more stable and better in performance. Item Type:Antenna Tuner DIY Kits : Antenna Tuner Model: ATU-100 Maximum Current Consumption: 400mA Number of Installed Inductors: 7 Number of Installed Capacitors: 7 Power Measurement Step of 10 Watts: 0.1 watts Measurement Steps with Power Higher than 10: 1 watt Power Measurement Accuracy: 10% Maximum Installation Inductance: 8.53uh Minimum Installation Inductance: 0.05uh Maximum Installed Capacity: 1869pf Minimum Installed Capacity: 10pf Usage Scenario: The device is intended to be used in the components of amateur radio equipment, as a part of an amplifier or transceiver, or as a separate device that performs the function of matching the output impedance of a power amplifier (PA) with the antenna feeder. This device and the similar 2x5 group The relay is different, which allows it (with the maximum configuration) to work effectively in a wide frequency band, overlapping the radio amateur HF band from 1.8MHz to 50MHz. Colour:black Material:PC+Metal Package Contents: 1 x PCB Kit(Not assembled) 1 x Connection Line 1 x Module Only the above package content, other are not included. 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.