MFJ 928 BASIC INTELLITUNER (HF 200W)
MFJ 928 BASIC INTELLITUNER HF 200W
Description
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Features :
- Automatically matches antennas from 6 to 1600 ohms impedance (SWR up to 32:1)
- Handles 200 watts SSB/CW
- 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 2500 memories per bank
- Highly efficient switching L-network matching circuit
- 1.8 to 30 MHz continuous frequency coverage
- Audio SWR meter
- Built-in frequency counter
- Built-in radio interface circuitry for compatible radios
- Built-in bias tee
- Two SO-239 coax fed antenna connectors
- Connector for random wire or single wire antennas
The MFJ-928 IntelliTuner lets you rapidly tune any antenna automatically: unbalanced or single-wire. MFJ's exclusive InstantRecall , IntelliTune and AdaptiveSearch algorithms give you fast automatic tuning with more than 20,000 non-volatile VirtualAntenna memories. Each of the two antennas has four banks of memory; each memory bank has over 2500 non-volatile memories for tuner settings. The tuner includes a highly efficient switching L-network with wide matching capability, 1.8 to 30 MHz coverage, a radio interface port, and heavy-duty 10 amp/1000 volt relays. It is rated at 200 watts SSB/CW. A maximum of 256 values of inductance and 256 values of capacitance are 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 μH and 0 to 3900 pF. All MFJ IntelliTuners learn and remember. When you transmit, they automatically adjust for minimum SWR and remember the frequency and tuner settings, safely stored in non-volatile memory. The next time you operate on that frequency (or close to it) and antenna, these tuner settings are instantly restored and you're ready to operate in milliseconds. Each of two antenna selections has four banks of memory, which can learn and remember more than 2500 frequencies and tuner settings per bank. When you key your transmitter, MFJ's InstantRecall checks its memory to see if you have operated that frequency before. If so, tuning is instantaneous and you're ready to operate. If not, MFJ's algorithm (based on MFJ's famous SWR Analyzer technology) kicks in. It measures the IntelliTune complex impedance of your antenna. Next, it calculates the components it needs and instantly snaps them in. Finally, it fine-tunes to minimize SWR, and you're ready to operate--all in a fraction of a second. If the antenna impedance is not within the tuner's measurement range, MFJ's AdaptiveSearch algorithm goes into action. Frequency is measured and relevant components values are determined. Only those values are searched for fast tuning. If it still cannot find a match, the search is performed again using a different search pattern.
Specification
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Impedance matching range : 6 to 1600 ohms SWR matching range : up to 8:1 for < 50 ohms and up to 32:1 for > 50 ohms Minimum power for tuning : 2 watts Maximum power while tuning : 100 watts with foldback, 20 watts without foldback RF power limit : 200 watts SSB/CW Frequency range : 1.8 to 30 MHz continuous coverage Frequency counter accuracy : ±1 kHz across HF bands Frequency counter range : up to 50 MHz Capacitance range : 0 to 3961 pF nominal (256 values) Inductance range : 0 to 24.86 μH nominal (256 values) Relay rating : 10 amp 1000 volts Relay electrical life : 100,000 operations Relay mechanical life : 10 million operations Memory endurance : 1 million erase/write cycles Memory data retention : > 200 years Power requirements : 12 - 15 volts DC, 2.1 × 5.5 mm coaxial plug, center pin positive Current consumption : 750 milli-amp or less Dimensions (approx.) : 6.5 × 2.8 × 7.5 in. (165 × 71 × 191 mm) (width/height/depth) Weight (approx.) : 2.3 lb. (1.04 kg) In The Box
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- Unit
- Cable DC
- Instruction manual