M100 MK2 HF Automatic Antenna Tuner 1.8–50 MHz 100W

The M100 MK2 is a compact HF automatic antenna tuner covering 1.8–50 MHz with 100W max power. Featuring a 7L7C L-network, 128-step SAR tuning algorithm, and match completion in just 2–5 seconds. Built-in battery, OLED display, one-button operation, SWR alarm output, and 24-point power calibration ensure accurate and reliable tuning in any situation. Perfect for ham radio operators who need portability and performance.

• Plug-and-Play Automatic Tuning – Default auto mode starts tuning instantly when you transmit, and automatically re-matches when you change frequency. No manual adjustments needed – just operate your shortwave radio as usual.
• One-Button Full Control – A single button handles tuning, mode switching (Auto / Bypass / Manual), and power on/off. Simple and intuitive, perfect for both beginners and experienced operators.
• Real-Time OLED Display – Clearly shows output power, SWR, inductance and capacitance values, and battery percentage with voltage readout. All key operating parameters at a glance.
• Built-in Replaceable Battery with USB Charging – Comes with a rechargeable lithium battery that can be easily replaced. USB charging makes it field-ready – ideal for portable and mobile operations without external power.
• Compact & Versatile Antenna Matching – Small and lightweight design fits easily into any shack or go-bag. Compatible with dipoles, verticals, end-fed antennas, long wires, and other common HF antennas. Can match SWR up to 5:1 (original) – reliable performance across the HF spectrum.