Features: The device consists of a set of seven capacitors and seven inductors, which enables it (with the largest configuration) to work effectively in the broadband, 1.8-50MHz amateur radio HF band. High quality matrial, stable and reliable performance, practical, easy to operate and use, has a long service life. The antenna tuner is automatically tuned, suitable for most radio stations. Power supply voltage up to 100w working power, max measured power: 150 watts Automatic antenna tuner kit is assembled, firmware programmed/ SMD/Chip soldered.(Without for Shell) Specifications: Power supply range: 10 - 15 VDC Max current : 450mA Max working power: 100 watts Max measured power: 150 watts Minimum power for tuning start: 1 watt Recommended maximum power while tuning not above 30 watts. (after tuning you can set 100 watts and work on this power) Minimum measured power: 0.1 watt 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: 8.5 uH Minimal step for setting inductance: 0.1 uH Maximum installed capacity: 1870 pF Minimal step for setting capacity: 10 pF 100 Watts tuner, 7x7 (7 capacitors x 7 coils) based on PIC 16F1938. Dimentsion - 120 mm x 62 mm. Package Includes: KIT included: PC B for ATU-100 7x7 HF autotuner + set of toroids: - T68-2 (6pcs); - BN43-202 (1pcs). + set of parts: - PIC16F1938 (1pcs) soldered on PC B with default firmware v3.0 - 100R 2512 1% (4pcs). - relay HK4100F-DC12V (15pcs) - OLED note: 1.DIY kit, need to have welding ability; 2. NO Need to burn-firmware, 3.All SMD electronic components soldered, chip soldered 4.Circuit schematic and firmware, please contact us. 5. with 0.96 OLED 6.Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. 7.Please allow 0-1cm error due to the manual measurment.