MFJ 998 HF INTELLITUNER + FREQ COUNTER
MFJ 998 HF INTELLITUNER + F C
Description
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The MFJ-998 instantly matches impedances from 12-1600 ohms using MFJ`s exclusive IntelliTune, AdaptiveSearch and InstantRecall algorithms with over 20,000 VirtualAntenna Memories. When you key your transmitter, MFJ`s InstantRecall checks to see if that frequency has been used before. If so, tuning is instantaneous. If not, MFJ`s IntelliTune algorithm (based on MFJ`s efficient SWR Analyzer technology) measures the impedance, snaps the necessary components in place, and then fine-tunes the SWR. If the antenna impedance is outside the tuner`s measurement range, MFJ`s Adaptive Search algorithm measures the frequency and determines only relevant component values -- which are then searched for fast tuning.
Safe Automatic Tuning and Amplifier Protection
The MFJ-998 includes MFJ’s Amplifier Bypass Control -- an MFJ exclusive feature! When used with a transceiver interface cable, tuning is safe and "stupidproof"! When a tuning cycle is initiated, the MFJ-998 first bypasses any in-line amplifier. Next, the MFJ-998 initiates a low-power CW tuning carrier from your transceiver. When tuning is complete, the MFJ-998 reverts your transceiver to its prior power and mode, and re-enables the amplifier. This entire cycle typically takes less than a second! Finally, if the MFJ-998 cannot find a match better than a preset amplifier SWR trip-point, the amplifier stays bypassed to provide automatic SWR protection for your amplifier -- another MFJ exclusive!
Analog SWR/Wattmeter
A large analog Cross-Needle SWR/Watt-meter displays selectable 300/60 watt or 3000/600 watt forward/reflected full-scale ranges. You can even select automatic power ranging -- the best power range is automatically selected for you.
Specification
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Impedance matching range : 12 to 1600 ohms SWR matching range : Up to 4:1 for < 50 ohms and up to 32:1 for > 50 Minimum power for tuning : 5 watts Maximum power while tuning : 100 watts with foldback, 20 watts without foldback RF power limit : 1500 watts SSB/CW Frequency range : 1.8 to 30 MHz continuous coverage Frequency counter accuracy : ±1 kHz across HF bands A/D conversion resolution : 10-bit Forward power display resolution : 0.1 for < 100 watts and 1 for ≥ 100 watts Reflected power display resolution : 0.1 for < 10 watts and 1 for ≥ 10 watts SWR display resolution : 0.1 Power bar meters resolution : 60 segments SWR bar meter resolution : 31 segments Capacitance range : 0 to 3926 pF nominal (256 values) on input side : 0 to 976 pF nominal (64 values) on output side Inductance range : 0 to 24.28 μH nominal (256 values) Relay rating : 16 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 supply requirement : 12 - 15 volts DC Current consumption : 1.4 amps or less Dimensions (projections included) : 12 ¾ × 4 × 14 ¾ in; 325 × 102 × 375 mm (w × h × d) Weight : Approx. 7 lb 12 oz; 3.5 kg Display : 2-line × 16-character backlight LCD TRANSMITTER connector : SO-239 ANTENNA connectors : SO-239 × 2 WIRE connector : Ceramic binding post POWER connector : 2.1 × 5.5 mm coaxial plug, center pin positive RADIO INTERFACE connector : 8-pin modular (RJ-45) RS-232 connector : D-sub 9-pin AMP ENABLE connectors : Phono (RCA) × 2 In The Box
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- Unit
- Instruction manual