Icom HF Automatic Antenna Tuner f/IC-M802-01 [AT130]HF Automatic Antenna Tuner for IC M802 01 Suitable for many vessels The versatile AT 130 can be used with a variety of vessels, even smaller boats that cannot use a long antenna element. For example, the AT 130 will match a 7 m (23 feet) long wire antenna across the marine band in the 1. 6 27. 5 MHz range. Automatic tuning No manual tuning is needed. Just push the [TUNE] switch on an Icom HF marine transceiver; the AT 130 adjusts the antenna and the