Fig 8. Connecting the earth to the screening of the coaxial cable in the down going link, by means of a home made clamp. Waterproof this connection with for instance rubber tape.
2. The installation of the coaxial antenna cable. The rule is: keep antenna cables as long as possible outside the house. Directly at the point where the cable enters the house, it has to make a down going link (see figure 5). At free-standing antenna-masts, where the antenna cable runs underground into the house, this is not necessary.

Under no circumstances the antenna cable may run through dusty rooms. Nor may the cable run near combustible substances.
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