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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.
4. Place one 5/16” External Star Washer on each of the four bolts that are installed in the tuner shelf
bracket and then place the MFJ-998RT Tuner on the bolts as shown. Position the tuner so it is
straight and the large hole on the tuner metal bracket is close to the antenna (this is where the
feedline wire will pass through). Use one 1/4”-20 Acorn Nut on each of the bolts to secure the
MFJ-998RT tuner in place.
