Adjustment Procedure; Tuning Chart - MFJ -969 DELUXE Versa Tuner II Instruction Manual

MFJ-969 DELUXE Versa Tuner II

Adjustment Procedure

When using the MFJ-969 in receive only applications, adjust the MFJ-969 for the
highest "S" meter or signal level. The Tuning Chart can be used as a starting reference.
To use the MFJ-969 for transmitting, follow the steps below:
1. Select the 30W (out) METER switch scale. Place the PEAK AVG button in the AVG
(out) position. Turn the transmitter's power control fully down.
2. Position the TRANSMITTER and ANTENNA controls and the INDUCTOR
SELECTOR switch in the bottom Tuning Chart position for the operating frequency.
Freq. MHz
1.8
1.9
2.0
3.6
3.9
7.15
10.15
14.15
18.2
21.1
24.9
28.5
50.2
3. Apply just enough power on CW (or AM / FM / RTTY) to obtain noticeable deflection
on the reflected power meter.
4. Carefully adjust the ROLLER INDUCTOR and ANTENNA controls for the lowest
reflected power.
NOTE: These controls interact. Adjust the ROLLER INDUCTOR for minimum SWR,
then adjust the ANTENNA control for minimum SWR. Go back and forth
between these adjustments as many times as required until the lowest reflected
power (best SWR) is obtained.
5. If a perfect or very low SWR can not be obtained, try moving the TRANSMITTER
control to a slightly higher setting. Repeat from Step 3.
NOTE: Always use the lowest setting of the TRANSMITTER control that allows a
match. The widest matching range occurs at higher numerical settings of the
5

Tuning Chart

Transmitter Antenna
1
1
1
1
2
4-1/2
6
6-1/2
7
8
8-1/2
9
9-1/2
Inductor
1 33
1 41
1 47
1 91
2 93
4-1/2 107
6 112
6-1/2 116
7 118
8 119
8-1/2 119
9 121
9-1/2 123