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MFJ-993 IntelliTuner Automatic Antenna Tuner
Instruction Manual
©
2003-2004 MFJ Enterprises, Inc.
17
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]
Meter Range 30 Watts
[2 beeps]
Not Used
Meter Range 300 Watts
[1 beep]
Reflected
5 Watts Mark
20 Watts Mark
60 Watts Mark
[TUNE] + [C-DN]
[TUNE] 2 seconds
Auto Range Off
Sticky Tune Off
[2 beeps]
Not Used
Auto Range On
Sticky Tune On
[1 beep]
[TUNE] + [L-UP]
Auto Tune SWR +0.5
[1 beep]
Auto Tune SWR +1.0
[2 beeps]
Auto Tune SWR +1.5
[3 beeps]
Both Needles
Zero Scale
Mid Scale
Full Scale
No
CANCEL
[2 beeps]
Delete Confirmation?
DELETE ANTENNA
TOTAL RESET
Yes
DELETED
or
RESET
[1 beep]
Needles Intersect at SWR 1.5
Needles Intersect at SWR 2.0
[TUNE] + [C-UP]
Target SWR 1.5
[1 beep]
Target SWR 2.0
[2 beeps]
Table 2. Meter Needle Stationary Codes.
If not enough power is applied for tuning (less than 5 watts), the display will flash
INCREASE POWER
three times and “QRO” (dah-dah-di-dah di-dah-dit dah-dah-dah) will be sent on CW. Increasing the input
power above five watts ends this message.
When input power is too high, the tuner enters a self-protection mode. The tuner will not allow any of its
relays to change. This feature is to prevent damage to your tuner.
If too much power is applied when tuning, the tuner will cease the tuning routine, flash
DECREASE
POWER
three times and send “QRP” (dah-dah-di-dah di-dah-dit di-dah-dah-dit) on CW. 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 300 watts is applied to the tuner, the tuner will go into bypass mode, flash
OVERLOAD
three
times and send “QRT” (dah-dah-di-dah di-dah-dit dah) on CW.
If the tuning process is activated under these conditions, the tuner will not start the tuning. It will indicate
the appropriate bounce code on the meter and display a warning message on the LCD.
Summary of Contents for MFJ-993
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