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Installing the MFJ-998RT option
The MFJ-998RT Tuner is mounted on a custom made stainless steel shelf that is attached to the
DXE-MBVE-5A antenna.
1. Install the four 1/4”-20 x 3/4” long Hex Head Cap Bolts, four 1/4” External Tooth Washers and
four 1/4”-20 Hex Nuts on the tuner shelf bracket as shown. The hex bolt heads will be on the
same side as the logo on the tuner shelf bracket.
2. Loosely install the two 4” long U-bolts, two V-saddle clamps with the 5/16”-20 Hex Nuts, 5/16”
Flat Washers, 5/16” Split Lock Washers and 5/16” External Tooth Washers as shown on the
tuner shelf bracket.
3. With the U-bolts loose, you can slip
the assembly onto the lower base
tube. <Hint: If you tilt the base, it
makes it easy to do this part of the
installation.>. Position the top U-
bolt 4-1/2” below the top of the
base tube as shown. (Refer to Page
40 for photos showing the
positioning of the clamps and
tuner). Once positioned correctly,
tighten all of the hardware holding
the tuner shelf assembly to the
lower base tube. Do not over tighten
the U-Bolt Hex Nuts which can
break or bend the aluminum saddle
clamp. Evenly tighten each side of the U-bolt until the split lock washer is seated properly.
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