MFJ IntelliTuner -991, Instruction Manual

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MFJ-991 / MFJ-994 IntelliTuner Automatic Antenna Tuners Instruction Manual
©
2004 MFJ Enterprises, Inc.
5
•
TUNE Button:
Press this button briefly to start the tuning process. The transmitter must be keyed
first with at least 5 watts (10 watts for MFJ-994) of power. When the SWR is already below the
target SWR, pressing [TUNE] will fine-tune the match for a lower SWR, if possible.
“
StickyTune
” allows for one-handed tuning operation. Normal tuning requires keying the transmitter
with one hand and using the other hand to push the [TUNE] button to start the tuning process. To
toggle the
StickyTune
mode on and off, press and hold the [TUNE] button for two seconds. The
Reflected Power needle goes to 60 watts when on and to 5 watts when off. When
StickyTune
is
enabled, the tuning process starts automatically when the transmitter is keyed with at least 5 watts (10
watts for MFJ-994) of power.
•
POWER Button:
Used to turn the power on and off. Note that during power-on the analog meter
bounces once to indicate the model number, 99
1
, or four times to indicate a model 99
4
. When the
power is off, the tuner is placed in bypass mode (straight through from TRANSMITTER to
ANTENNA and WIRE). When power is turned on, the tuner automatically restores all previous
settings.
WARNING: Do not turn the power on and off rapidly, otherwise the tuning setting
memory can be corrupted and the unit will have to be reset to factory defaults.
BUTTON ACTION
TUNE
C-UP
L-UP TUNE
TUNE L-DN
TUNE C-DN
C-DN L-DN
C-UP C-DN
Press + to switch the capacitor between the input and output side.
Press + to bypass the antenna tuner.
Press + to cycle the Auto Tune SWR among 0.5, 1.0 and 1.5 above the target SWR.
Press + to toggle the Target SWR between 1.5 and 2.0.
Press + to toggle the Auto Range on and off.
Press + to toggle the Meter Range between 300 and 30 watts (disable Auto Range).
Press + to increase both capacitance and inductance.
C-UP
L-UP
AUTO
C-UP
L-UP
C-DN
L-DN
TUNE
POWER
Press to tune the antenna tuner; press for two seconds to toggle the StickyTune on and off.
Press in to select semi-automatic mode, out to select automatic mode.
Press to decrease inductance.
Press to increase inductance.
Press to decrease capacitance.
Press to increase capacitance.
Press in to turn power on, out to turn power off.
Figure 3. Button Action.