Hy-Gain TH-1 Rotatable Dipole Instructions
7
7) Assemble the two small "L" brackets to the two long fiberglass insulators with 6-32 x 3/8"
screws (3 each) and the 6-32 kep nuts (3 each) as shown in Figure 5.
8) Open up two #16 hose clamps and install then over the HF beam’s driven element as close
to the inside ends of the driven element as possible. Clamp the two aluminum stub
channel brackets (one on each radiator) as shown in Figure 6.
9) Open up the remaining two #16 hose clamps (one on each radiator), clamp the fiberglass
insulators so as to support the 55” threaded rods. Position the insulators as shown in
Figure 6.
10) Mount the two stubs by threading a 10-32 x 3/8" nut 1/2" near the end of the threads.
Add a second nut and lockwasher to sandwich the bracket between the two nuts, leaving
no more than ¼” of threaded rod exposed beyond the aluminum bracket. See Figure 6.
11) Strip four inches of insulation from the end of your coax feedline. Separate the braid
from the center conductor and install the ¼” solder lugs on the shield and center
conductor wire (solder in place). Coat the leads liberally with Liquid Electrical Tape
TM
and let dry. Once the Liquid Electrical Tape
TM
is dry, connect the feed to the ¼-20
hardware as shown in Figure 7.
Hole for 6 or 2
meter stub
Fiberglass
insulator
Aluminum
L-bracket
6-32 x 3/8
screws (3)
6-32 nuts (3)
Figure 5
~20”
Center Insulator
Figure 6: 6 meter stub assembly and mounting
~35”
AL brkt
Fiberglass brkt
#10 nuts (2)
HF Beam Driven Element
55” threaded rod
Balun
