MAT-125E Automatic Antenna Tuner

The MAT-125E Automatic Antenna Tuner is a compact microprocessor-controlled external antenna matching unit designed for seamless integration with HF and 6m amateur transceivers. Engineered for efficient impedance matching across multi-band antenna systems, the MAT-125E enables stable operation of non-resonant antennas such as end-fed wires, mobile whips, and shortened verticals without requiring manual LC tuning.

Supporting automatic impedance matching across the 1.8 MHz – 54 MHz spectrum, the MAT-125E utilizes a high-speed relay-based tuning network to achieve optimal SWR performance—minimizing reflected power and improving transmitter efficiency during portable or mobile HF operation.

Rated for up to 125W transmit power, the MAT-125E is suitable for:

• Portable HF Field Deployment (POTA / SOTA)

• Mobile HF Installations

• Compact Base Stations

• Multi-Band Wire Antennas

• Non-Resonant Vertical Antennas

Automatic tuning is initiated directly via compatible CAT interface control—allowing fast antenna matching without manual intervention.