1、Using PIC18F2520 MCU and 7 groups of LC combination, durable and long service life 2、Adopt HF32/10A and HF33/5A relay, the high quality can provide stable performance 3、Using 6KV, high voltage ceramic capacitor, the frequency is 1.9‑54MHz for great signal transmission 4、Using 4pcs T90‑2 magnetic ring inductors design, heat generation is smaller than the original version 5、The connecting parts have good contact performance, ensure stable working, simple to operate Item Type: Antenna Tuner Material: Aluminum alloy Maximal: SSB≥180w, it is recommended to use it for a long time not larger than (SSB≥150w, FT8, CW, FM≥80W) Frequency: 1.9-54MHz (specifically affected by the length of the antenna and the degree of deviation of the standing wave) Tuning Impedance Range: 5Ω-1.1KΩ 1 x Antenna Tuner 1 x Connection Line 1 x Plug