MAT-Tuner mAT-180H Automatic HF Antenna Tuner for Icom, The mAT-180H is an automatic tuner intended for use with modern ICOM transceivers. It works with any ICOM transceiver that supports an AH-3 or AH-4 ICOM tuner, a partial list of compatible units includes IC-706, 703, 718, 7000, 7100, 7200, 7300, 7410, 746, 756, 7600 (and all variants). The interface cable is included. The operation is the same as the method of the ICOM tuner, which is simple and convenient. The mAT-180H is designed specifically for use with ICOM transceivers. Tuning is performed when the TUNER/CALL button is pushed on the front of the transceiver and held for one second.

The mAT-180H has 16,000 frequency memories. When turning on or near a previously tuned frequency, the mAT-180H uses "Memory Tune" to recall the previous tuning parameters in a fraction of a second. If no memorized settings are available, the tuner runs a full tuning cycle, storing the parameters for memory recall on subsequent tuning cycles on that frequency. In this manner, the mAT-180H "learns" as it is used, adapting to the bands and frequencies as it goes. To facilitate the use of wire antennas, the mAT-180H has two terminals mounted on the rear panel, red and black. The red terminal connects the wire antenna, and the black terminal connects the ground wire The mAT-180H connects to the radio via its tuner jack to control the tuning cycle; the transceiver's tune button controls the tuner. The tuner jack also powers the tuner, so it requires no external power supply.

The mAT-180H provides automatic antenna tuning across the entire HF spectrum plus 6 meters, at power levels up to 120 watts. It will tune dipoles, verticals, Yagis, or virtually any coax-fed antenna. It will match an amazing range of antennas and impedances, far greater than some other tuners you may have considered, including the built-in tuners on many radios. The mAT-180H connects to the radio via its tuner jack to control the tuning cycle, and the transceiver's tune button controls the tuner. The tuner jack also powers the tuner, so it requires no external power supply. The mAT-180H is designed specifically for use with ICOM transceivers. Tuning is performed when the TUNE button is pushed on the front of the transceiver and held for one second.