JOVE RJ1.1, Assembly Manual

14

Figure 5. Solder the shielding and center conductor to the copper wires.

Figure 6. Install the ferrite toroid cores.

Installing the Toroids and Connectors

1.

o

For each dipole, slide 3 ferrite toroids cores up the cable to the very top of the

coax near the dipole. Secure them all in a row with tape and a tie wrap. Be sure this is

secure because they may slide down the coax after the antenna is up (Figure 6).

2.

o

Install the F-connector on the coax feed line to each dipole. To install, remove

about 3/4 inches (2 cm) of the outer coax casing (Figure 7a).

3.

o

Carefully unbraid about half of the exposed shielding (about 3/8 inch (1 cm) and

fold it back over the other half of the copper shielding and over the outer casing

(Figure 7b).

4.

o

Remove the insulation around the center conductor leaving about 1/2 inch (1.3

cm) of bare center conductor (Figure 7c, 7d).

5.

o

Push the F-connector over the end of the coax and twist on as tightly as possible.

The teeth of the F-connector will bite into the shielding that has been folded back and

this will provide good contact for ground. About 1/8 - 1/4 inch (0.3- 0.6 cm) of center

conductor should stick out of the end of the F-connector (Figure 7e).

6.

o

Repeat this connector installation for each end of the long piece of coaxial cable

(the 1

λ

 coax cable).