The Mfj-949e is a versatile antenna tuner designed for use with amateur radio equipment. It features a compact design and is capable of tuning a wide range of antennas, including dipoles, verticals, and beams. The tuner has a power rating of up to 300 watts and operates on frequencies ranging from 1.8 to 30 MHz. It utilizes a cross-needle meter to provide accurate tuning and has a built-in dummy load for testing purposes. The Mfj-949e also includes a built-in balun to ensure efficient power transfer between the tuner and the antenna. With its user-friendly interface and reliable performance, the Mfj-949e is a popular choice among amateur radio operators looking to optimize their antenna systems.PreTune lets you pre-tune your MFJ-949E off-the-air into its built-in dummy load! Makes tuning your actual antenna faster and easier. Plus much more, size built-in non-inductive 50 Ohm dummy load, scratch-proof Lexan multi-coloured front panel, superior cabinet and construction, and more.