MFJ-928 Compact IntelliTuner Automatic Antenna Tuner
Instruction Manual
©
2005 MFJ Enterprises, Inc.
2
Features
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Automatically matches antennas from 6 to 1600 ohms impedance (SWR up to 32:1)
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Handles 200 watts SSB/CW
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Tune in less than 15 seconds, usually less than 5 seconds
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Over 20,000 non-volatile memories for tuner settings
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Four memory banks per antenna with over 2500 memories per bank
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Highly efficient switching L-network matching circuit
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1.8 to 30 MHz continuous frequency coverage
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Audio SWR meter
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Built-in frequency counter
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Built-in radio interface circuitry for compatible radios
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Built-in bias tee
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Two SO-239 coax fed antenna connectors
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Connector for random wire or single wire antennas
Specifications
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Impedance matching range: 6 to 1600 ohms
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SWR matching range: up to 8:1 for < 50 ohms and up to 32:1 for > 50 ohms
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Minimum power for tuning: 2 watts
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Maximum power while tuning: 100 watts with foldback, 20 watts without foldback
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RF power limit: 200 watts SSB/CW
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Frequency range: 1.8 to 30 MHz continuous coverage
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Frequency counter accuracy: ±1 kHz across HF bands
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Frequency counter range: up to 50 MHz
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Capacitance range: 0 to 3961 pF nominal (256 values)
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Inductance range: 0 to 24.86
μ
H nominal (256 values)
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Relay rating: 10 amp 1000 volts
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Relay electrical life: 100,000 operations
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Relay mechanical life: 10 million operations
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Memory endurance: 1 million erase/write cycles
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Memory data retention: > 200 years
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Power requirements: 12 - 15 volts DC, 2.1 × 5.5 mm coaxial plug, center pin positive
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Current consumption: 750 milli-amp or less
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Dimensions (approx.): 6.5 × 2.8 × 7.5 in. (165 × 71 × 191 mm) (width/height/depth)
not including connectors
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Weight (approx.): 2.3 lb. (1.04 kg)
† Specifications and design are subject to change without notice.
Summary of Contents for Compact IntelliTuner MFJ-928
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