Overview

MFJ 993B IntelliTuner™ Automatic Antenna Tuners

MFJ 993B IntelliTuner™ Automatic Antenna Tuners facilitate tuning any antenna automatically; balanced, unbalanced, or single-wire.

MFJ 993B tuners are comprehensive automatic antenna tuning centers with an SWR/wattmeter, a built-in antenna switch for two antennas, and a 4:1 current balun for balanced lines. They may be operated at a remote distance through a 9-pin to 9-pin computer cable using the MFJ-993RC remote control unit.

MFJ's exclusive InstantRecall™, IntelliTune™, and AdaptiveSearch™ algorithms provide fast automatic tuning with more than 20,000 non-volatile VirtualAntenna™ memories. Each of the two antenna ports have four banks of memory; each memory bank has over 2,500 non-volatile memories for tuner settings.

These tuners include a highly efficient switching L-network with wide matching capability, 1.8 to 30 MHz coverage, cross-needle power meters, a backlight LCD screen, a port for an accessory remote control, a radio interface port, and heavy-duty 16 amp/1,000 V relays. They are rated at 300 watts to match 6 to 1,600 ohm antennas (SWR up to 32:1) or 150 watts to match wider range of 6 to 3,200 ohm (SWR up to 64:1) antennas. A maximum of 256 values of inductance and 256 values of capacitance is available. With the capacitance switched between the input and output side, this provides a total of 131,072 L/C tuning combinations. The nominal tuning ranges are 0 to 24 microhenrys and 0 to 3,900 picofarads.

All MFJ IntelliTuners™ learn and remember. When you transmit, they automatically adjust for minimum SWR and remember the frequency and tuner settings, then safely store them in non-volatile memory. The next time you operate on that frequency (or close to it), tuner settings are instantly restored and you're ready to operate in milliseconds.

MFJ 993B IntelliTuner™ features include:

* Automatically matches antennas with impedance of 6 to 1,600 ohms or 6 to 3,200 ohms (depending on power level)
* Handle 300 watts (match 6 to 1,600 ohms) or 150 watts (match 6 to 3,200 ohms)
* Initially tune in less than 15 seconds, usually less than 5 seconds
* Over 20,000 non-volatile memories for tuner settings
* Four memory banks per antenna with over 2,500 memories per bank
* Highly efficient switching L-network matching circuit
* 1.8 to 30 MHz continuous frequency coverage
* Adjustable target SWR 1.0 to 2.0
* Adjustable SWR retune threshold 0.5 to 1.5 change
* Lighted cross-needle SWR/wattmeter with high, low, and auto range options
* Multifunction backlit LCD screen with contrast control
* Numeric readings for SWR, forward, and reflected power
* Bar meters for SWR, forward, and reflected power with range options
* Audio SWR meter with volume control
* Built-in frequency counter
* Two SO-239 unbalanced coax antenna connectors
* Connector for random wire or single wire antennas
* Built-in 4:1 current balun for balanced line antennas
* Optional remote control
* Optional radio interface for compatible radios
* Requires 12V DC at less than 1 amp for operation

MFJ 993B IntelliTuner™ Automatic Antenna Tuners offer a wealth of features with good power handling at an affordable price. Order MFJ-993B tuners from DX Engineering!

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