MFJ 994BRT IntelliTuner™ remote automatic antenna tuners are comprehensive, 600 watt, SSB/CW remote automatic antenna tuning units that match 12-800 ohm antennas. MFJ 994BRT tuners are mounted in a durable, hard plastic case that measures just 9 1/4 in. wide x 3 in. high x 14 1/4 in. deep. They cover 1.8 to 30 MHz, have heavy-duty 16 amp/1,000 V relays and feature the highly efficient L-network. MFJ 994BRT tuners let you tune any antenna automatically, balanced or unbalanced--extra fast. MFJ's exclusive IntelliTuner™, Adaptive Search™, and InstantRecall™ algorithms give you ultra-fast automatic tuning with over 10,000 VirtualAntenna™ memories. As you're ragchewing, contesting, or DXing, your MFJ IntelliTuner™ is learning! When you transmit, the MFJ 994BRTs automatically tune for minimum SWR and remember your frequency and tuning settings. The next time you operate on that frequency and antenna, the tuner settings are instantly restored and you're ready to operate in milliseconds! MFJ's new VirtualAntenna™ memory system gives you 2,500 memories and has a coaxial antenna connector and a binding post for end-fed long wire antennas. MFJ's InstantRecall™ first checks its memory to see if you have operated this frequency before. If so, tuning is instantaneous and you're ready to operate. If not, MFJ's IntelliTuner™ algorithm, based on MFJ's famous SWR Analyzer technology, kicks in. First, it measures the complex impedance of your antenna. Next, it calculates the components it needs and instantly snaps them in. Then, it fine-tunes to minimize SWR and you're ready to operate in a fraction of a second. When the impedance is within its measurement range, MFJ 994BRT tuners are one of the fastest automatic antenna tuners in the world! If impedance can't be accurately determined, MFJ's AdaptiveSearch™ algorithm goes into action. Frequency is measured and relevant component values are determined. Only those values are searched for ultra-fast tuning. For even faster searches, you can set the target SWR to 2 (settable from 1.0 to 2.0). They also include the MFJ BiasTee Power Injector to send DC/RF down your coax.