MFJ-931 Instruction Manual
Artificial RF Ground
until maximum RF current is achieved. After maximum RF current is reached, retune your
antenna tuner for minimum SWR. You may need to retune both the MFJ-931 and your
antenna tuner several times to achieve best results.
Electrically Placing Your Far Away RF Ground at Your Radio
Connect your transmitter or antenna tuner to the binding post labeled "To Transmitter or
Antenna Tuner Chassis Ground" on the back of the MFJ-931 with the shortest possible
wire(s). If necessary, place the MFJ-931 and your transmitter or antenna tuner side by side or
one on top of the other to insure the ground of each are as close to each other as possible.
Connect your existing ground wire to the red binding post labeled "To Counterpoise Wire
or Ground Connection Wire" on the back of the MFJ-931.
Do not reverse these wires.
After
making these connections, follow the same procedure for
maximizing RF ground current as described in the
Creating Artificial Ground
section.
After maximum RF current is reached, retune your antenna tuner for minimum SWR. You may
need to retune both your antenna tuner and the MFJ-931 several times to achieve best results.
WARNING: This unit does not provide a DC electric ground. A separate wire will
need to be run from the transmitter to an electric ground if it is not
already available.
