MFJ-994B IntelliTuner Automatic Antenna Tuner
Instruction Manual
©
2004-2010 MFJ Enterprises, Inc.
15
Tuner Status Indicators
In addition to displaying power and SWR, the meter also indicates tuner status. The meter needles
bounce, or rise to one point and stay to provide information. In this mode the meters do
not
indicate
power levels. For example, when you press [C-DN] and [L-DN] simultaneously to place the tuner in
bypass mode, the reflected needle bounces to the 20-watt mark until you release the buttons. The
following tables show the meter needle stationary and bounce codes.
If insufficient power is applied for tuning (less than two watts), the Forward Power needle will bounce to
the 100-watt mark. When input power is too high, the tuner enters a self-protection mode and the
Forward Power meter needle bounces to 300-watt mark (full scale). The tuner will not allow any of its
relays to change to prevent damage to your tuner.
If too much power is applied when tuning is in progress, the tuner will cease the tuning routine, and the
Forward Power meter needle will bounce to full scale. This occurs when the forward power exceeds 75
watts and the SWR is greater than 3.0, or when the forward power exceeds 125 watts regardless of the
SWR. If more than 600 watts is applied to the tuner, the tuner will go into bypass mode; and both
Forward and Reflected meter needles will bounce to full scale.
If the tuner cannot achieve the target SWR, the Reflected Power needle will bounce three times upon
tuning completion.
Meter Needle Stationary Codes
(Meter needles stay at the indicated mark until buttons are released.)
Forward
30 Watts Mark
100 Watts Mark
300 Watts Mark
[TUNE] + [L-DN] 300 Watts Meter Range
Auto Range
3000 Watts Meter Range
10 Watts Mark
20 Watts Mark
30 Watts Mark
40 Watts Mark
[TUNE] + [C-DN]
Memory Bank A
Memory Bank B
Memory Bank C
Memory Bank D
Reflected
5 Watts Mark
20 Watts Mark
60 Watts Mark
[TUNE] + [L-UP]
Auto Tune SWR +0.5
Auto Tune SWR +1.0
Auto Tune SWR +1.5
[TUNE] 2 seconds
Sticky Tune Off
Not Used
Sticky Tune On
Both Needles
Zero Scale
Mid Scale
Full Scale
[L-UP] or [C-UP]
No (Cancel)
Delete Confirmation?
Yes (Delete)
[TUNE] + [C-DN]
+ [L-DN]
Not Used
Not Used
Memory Overwrite
Needles Intersect at SWR 1.5
Needles Intersect at SWR 2.0
[TUNE] + [C-UP]
Target SWR 1.5
Target SWR 2.0
Table 2. Meter Needle Stationary Codes.
