MFJ-993B – 300/150W Deluxe HF Automatic Tuner


World’s first dual power level 300/150 watts SSB/CW tuner. Select 300 watt SSB/CW power level and match 6-1600 Ohm antennas or select 150 watt SSB/CW power level and match extra wide-range 6-3200 Ohms!


The MFJ-993B Intelli Tuner lets you tune any antenna automatically balanced or unbalanced – ultra fast. It’s a comprehensive automatic antenna tuning centre complete with SWR/Wattmeter, antenna switch for two antennas and 4:1 current balun for balanced lines.

MFJs exclusive IntelliTuner, Adaptive Search and InstantRecall algorithms give you ultra-fast automatic tuning with over 20,000 Virtua lAntenna Memories. 

MFJ-993B - 300/150W Deluxe HF Automatic Tuner

You get a highly efficient L-network, 6-1600 Ohm matching at 300 watts SSB/CW or extra-wide 6-3200 Ohm matching at 150 watts SSB/CW, 1.8-30 MHz coverage, Cross-Needle and digital meters, audio SWR meter, backlit LCD, remote control port, radio interface, heavy-duty 16 amp/1000V relays. When you transmit, the MFJ-993B automatically tunes for minimum SWR and remembers your frequency and tuner 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!

MFJs Instant Recall TM 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, MFJs IntelliTuner 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.

If it can’t accurately determine impedance, 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 1.0-2.0).

  • Type: Dual 300/150 watt intelli automatic tuner 
  • Frequency: 1.8-30 MHz
  • Power: 300W SSB & 150W CW
  • Meter: Cross needle 
  • Size: 254 x 64 x 228 mm 
  • Includes: LCD readout & 4:1 balun 
  • Cross Needle and Digital SWR/Watt Meters
  • Virtual antenna memory
  • 2500 memories per antenna
  • Manually tune when you can’t transmit
  • Lighted cross needle and digital meters
  • Backlit LCD display

Additional information

Weight 1 kg