Tarheel Antennas MFJ-1792 Instruction Manual - Figure 5
MFJ-1792/1793 Instruction Manual
Vertical Antenna
9
16- Screw a #10 nut over the threaded rod.
Slide the threaded end of the 55" rod
through the triangular support bracket with
the angle pointing down. Thread another
#10 nut over the rod to sandwich the bracket
between the two nuts. Refer to Figures 4
and 5. (NOTE: Do not attach angle bracket
to Tube 1 yet, it will be installed later.)
17- Mount the matching network to the base
mount by inserting the 6-32 x 2 1/4" screws
into the provided holes then threading a 6-32 nut
over both of them. See Figure 6.
18- Line up End A of the fiberglass rod with the 1/4"
holes in the U-channel of the Aluminum base mount. Bolt
End A of the fiberglass rod to the U-Channel with a 1/4 -
20 x 1 3/4" bolt, 1/4 - 20 nut, 1/4" spacer, and a split
washer.
NOTE: Use the 1/4" spacer between the fiberglass rod
and mount wall as shown in Figure 7.
19- Insert 2 U-bolts in the base mount designated holes.
Thread 1/4 - 20 nuts and split washers over them. See
figure iside front cover.
20- Insert End B of Coupler 1 into End A of Tube 1.
Insert the solid fiberglass rod into Coupler 1. Line up
holes. Bolt tube, coupler, and rod together with a 1/4 -
20 x 2" bolt, 1/4 - 20 nut and split washer (Refere to
Figure 1 for an example of tube insertion).
Do not secure this bolt yet if you are planning to install
the 20 meter element !
21- Place a hose clamp over end A of Coupler
1. Do not attach the solder lug of the
feedline, as shown in Figure 6, at this time!
22- With the help of another person, lay the 20
meter element parallel to the antenna. Insert the
1/4 - 20 x 1 3/4" bolt through the 1/4" hole in
the triangular support bracket of the 20 meter
element and secure bolt. See Figure 5.