MFJ-993BRT Automatic Tuner


  • Antenna tuner with automatic tuning
  • Frequency Range: 1.8 – 30 MHz
  • Power: Up to 300 Watts
  • Number of Ports: 2 (coaxial + long wire)


Remote Intelli tuner is mounted in a durable hard plastic case that measures just 9  1/4″ x 3″ x 14 1/4″. Covers 1.8 to 30 MHz, have heavy-duty 16 Amp / 1000 Volt relays and is a highly efficient L-network.

It also includes the MFJ-4117 bias tee power Injector to send DC / RF down your coax.

MFJ-994BRT handles 600 Watts – it’s perfect for Ameritron’s solid-state ALS-600 / S solid-state amplifier and popular tube-type AL-811 / H amplifiers! handles 600 Watts SSB / CW power level and matches 12 – 800 Ohm antennas.

MFJ-993BRT handles 300 Watts SSB / CW power level and matches 6 – 1600 Ohm antennas.
MFJ-993BRT lets you tune any antenna automatically balanced or unbalanced – extra fast.

It’s a comprehensive antenna tuning centre.

MFJ’s exclusive Intelli tuner, adaptive search and instant recall algorithms give you ultra-fast automatic tuning with over 10,000 virtual antenna memories.

As you’re ragchewing, contesting or DXing, your MFJ Intelli tuner is learning.

When you transmit the MFJ-994BRT automatically tunes for minimum SWR and remembers your frequency and tuning settings. The next time you operate on that frequency and antenna, these tuner settings are instantly restored and you’re ready to operate in milliseconds.

MFJ’s new virtual antenna memory system gives you 2500 memories, has a coaxial antenna connector and a binding post for end-fed long wire antennas.

MFJ’s Instant Recall 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 Intelli tuner algorithm – based on MFJ’s famous SWR analyzer technology – kicks in. 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 – you’re ready to operate. It’s all done in a fraction of a second.

When the impedance is within its measurement range, the MFJ-994BRT is the fastest automatic antenna tuner in the world.

If it can’t accurately determine impedance, MFJ’s adaptive search 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).