John Stewart
Shreveport, LA

Amateur Radio Station

MFJ-989 Versa Tuner V

The MFJ-989 Antenna Tuner is a high power, manual antenna tuner designed for coaxial fed, single wire and balanced antennas fed with open-wire. The tuner is designed to match most antenna systems operating from 1.8 to 30 Mhz and will handle up to 3KW PEP RF output power. The tuner includes a 300 watt dummy load for easy tune up of your exciter. It also includes a SWR/Power meter. It includes a front panel switch that allows selection of one of two coaxial antennas, the wire antenna or a balanced feed line antenna, plus a "pass-through" for times when tuning is not necessary. The MFJ-989 is a T-network tuner that uses a huge roller inductor (with turn counter) and two huge variable capacitors (see pictures below). You can learn more about this tuner in the nice YouTube video by Dave Larsen KK4WW.

Physical characteristics: Size: 10.75 x 4.5 x 15 inch (WxHxD), 10 lbs. approx.

Serial Number: 014411

This tuner was donated to QCWA Chapter 85 and sold at auction to raise scholarship money.

Front view
Back view
Inside view #1
Inside view #2
Inside view #3
Side panel #1
Side panel #2