Instruction Sheets for Part Number MFJ-986
Not Available
Antenna Tuner, Mobile, Manual, 1.8 - 30 MHz, 3,000 W, Roller, External, Each
See More Specifications
Overview
Brand:
Manufacturer's Part Number:
MFJ-986
Part Type:
Product Line:
DXE Part Number:
MFJ-986
Item Number:
2548865
Antenna Tuner Type:
Manual
Antenna Tuner Location:
Mobile
Weather-Resistant:
No
Mobile Whip Tuner:
No
Tuner Maximum Power Rating:
3,000 watts
Frequency Range:
1.8-30 MHz
Tuner Inductor Type:
Roller
Tuner Capacitors:
2
Tuner Bypass Switch:
Yes
Tuner Control Type:
External
Internal Dummy Load:
No
Internal Balun Type:
Current
DC Power Required:
No
Tuner Width:
10.000 in.
Tuner Height:
4.000 in.
Tuner Depth:
15.000 in.
Quantity:
Sold individually.
Notes:
Two capacitors operate differentially and share a common shaft.
Lowest Band of Operation:
1.8 MHz
Highest Band of Operation:
30.00 MHz
MFJ 986 Antenna Tuners
MFJ-986 Antenna Tuners are rugged, roller-inductor antenna tuners that handle up to 1,500 Watts PEP SSB output power. They tune 1.8-30 MHz continuously, including the MARS and WARC bands. MFJs innovative Differential-T Tuner uses a differential capacitor that makes tuning easier than ever. It gives minimum SWR at only one setting. Broadband coverage ends constant re-tuning.
MFJ's exclusive AirCore Roller Inductor gives absolute minimum SWR on every frequency... something tapped inductors just can't do. Their 3-digit turns counter, plus a spinner knob, gives precise inductance control so you can quickly retune to your previous band.
Their 6-position antenna switch lets you select two coax lines and/or random wires (direct or through tuner), balanced-line output, and external dummy load. MFJ's TrueCurrentBalun for balanced lines minimizes the feed-line radiation that causes field pattern distortion, TVI, and RF in your shack. Ceramic feed-through insulators for balanced lines withstand high voltages and temperatures.
Replacing two variable capacitors with a single differential capacitor yields a wide-range T-Network tuner with only two controls... a tuning capacitor and a roller inductor. Simple two-knob tuning makes tweaking your antenna easier than ever. You get minimum SWR at only one setting, and broadband response that ends constant re-tuning. You'll spend your time on QSOs instead of messing with your tuner!
Wide-spaced tuning capacitor plates let you run high power without arcing. MFJs lighted Cross-Needle Meter shows you SWR, forward, and reflected power simultaneously. It reads peak or average power on 2,000 or 200 Watt ranges. The lamp has on/off switch and uses your local 12 VDC supply.
MFJ-986 tuners use a true current-balun to force equal currents in the two antenna halves... even if the antenna is not perfectly balanced! The MFJ TrueCurrentBalun gives superior balance over voltage baluns and minimizes unbalanced current. This reduces field pattern distortion and concentrates your power for a stronger signal. Plus, it reduces TVI and RF in your shack caused by feed-line radiation.
Got power? Got antennas? Need flexibility? DX Engineering has your answers and your antennas covered with one of these MFJ-986 Antenna Tuners!
Documentation
Loading...
Reviews Write a Review
Some parts are not legal for use in California or other states with similar laws / regulations
Modal Header
Call To Order
This is a custom order part. You can order this part by Contacting Us.
Email this page