11/10/2023 0 Comments 989b tuner images![]() New roomy cabinet helps maintain components high Q. You'll find it handy for transmitter tuning, testing and repairing rigs, setting power level, adjusting mic gain and more. Weve never burned one up! You can select two coax antennas (directly or through tuner), balanced line/random wire, or built-in dummy load.Ī full-size 300 Watt non-inductive 50 Ohm dummy load is built-in. Extra wide spaced, heavy duty contacts handle extreme voltages and currents. MFJ-989Ds super heavy duty antenna switch is made of two individual ceramic wafers wired in parallel. Its constructed with two giant 2 1/2 inch toroid cores and wound with high voltage wire connected to high-voltage glazed ceramic feedthrough insulators. New high voltage current balun lets you tune high and low impedance balanced lines without core saturation or voltage breakdown. Uses 9-Volt battery and/or 12 VDC or 110 VAC with MFJ-1312D. Large, easy-to-read super-bright LED lighted Cross Needle meter lets you read SWR and forward/reflected (3000/300 Watt ranges) power at a single glance. ![]() New TrueActive peak reading SWR/Wattmeter lets you read true peak or average power on all modes. A precision gear driven 3-digit turns counter lets you accurately reset your roller inductor for quick band changing. New fast-tunecrank knob lets you reset your roller inductor quickly, smoothly and accurately. Large, self-cleaning wiping contact gives excellent low-resistance connection without contact arcing or burning. It gives you cool, efficient and smooth tuning on all bands and its air core cant burn up! New and improved AirCore Roller Inductor gives you lower losses, higher Q and handles more power with no self-resonances. ![]() MFJ AirCoreTM Roller Inductor with new fast-tune Crank Knob New larger, more attractive capacitor knobs with easy-to-see dials make tuning much easier and precise. Specially shaped plates give low minimum capacitance resulting in an extremely wide matching range - 160 thru 10 Meters. New huge 500 pF air variable capacitors give you twice the capacitance for much more efficient operation on 160 and 80 Meters. You get everything you've ever wanted in a high power, full featured antenna tuner - extremely wide matching range, lighted Cross-Needle SWR/Wattmeter, antenna switch, dummy load and balun. ![]() You can match dipoles, verticals, inverted vees, random wires, beams, balanced lines, coax, mobile whips, shortwave - nearly any antenna. It easily handles full 1500 Watts SSB/CWand covers 1.8 to 30 MHz, including MARS and WARC bands into balanced or unbalanced loads. You get better efficiency, lower losses and a new true peak reading SWR/Wattmeter. The worlds most popular legal limit antenna tuner just got better - much better - with no increase in price! New TrueActiveTM Peak-Reading Cross-Needle SWR/Wattmeter with new Super-bright LED ![]() New AirCoreTM Roller Inductor with new fast-tune Crank Knob Easily handles full 1500 Watts SSB/CW, 1.8 to 30 MHz including MARS/WARC bands. Worlds most popular legal limit antenna tuner just got better - with no increase in price! You get better efficiency, lower losses, and a new true peak-reading meter. MFJ-989D 1500 Watt legal limit Antenna Tuner ![]()
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