How to choose the sealed call cord for an installation



How to choose the sealed call cord for an installation
How to choose the sealed call cord for an installation
Choosing the right sealed call cord is the key to correct
installation. There are several factors that tend to be decisive
when choosing one and another, in addition to the price, of
The sealed call cord is used for both DTT and satellite installations,
as well as in certain video surveillance installations (CCTV). The use
of an unsuitable cable or the deterioration of it is very frequent
reasons for the malfunctioning of many installations. Therefore, we
will try to help you know how to choose the ideal sealed call cord.
How to choose the sealed call cord
The main function of the sealed call cord is to transport the RF
signal. These are the signals that go from the antennas to the
receivers , being able to pass through amplifiers , distributors and
television outlets among other elements, this happens both for DTT
and satellite.
It is possible to find different types of sealed call cords, depending
on the material, the diameter of the central conductor and the
dielectric or use among other factors.
Sealed call
The first big difference and
factor to take into account
when acquiring a sealed call
cord, is where we are going to
place it. Depending on whether
the use is going to be outside a
home or building or is going to
be used indoors, we will choose
a coaxial or other cable.
The range and variety of this type of cable is somewhat inferior
with respect to the indoor sealed call cord. The indoor sealed call
cord is white and there are different qualities and thicknesses. In
the following article you will see the best indoor sealed call cords.
What type of installation is it?
Depending on the installation and the situation, a coaxial or other
cable will be adapted.
Once the first big doubt has been solved whether it is for indoor or
outdoor, we must bear in mind these characteristics:
Signal loss
Thickness of the cable
In flammability
According to the signal loss:
There are sealed call cords that offer a very low signal loss. They
are usually somewhat higher cost because they are 100% copper
and have a very good shielding. The screening is key to avoid
signal loss and therefore the mesh that makes the coating must be
of good quality.
In addition, this type of sealed call cords has a very low
attenuation and is designed for installations of a medium size,
large and very large.
According to the thickness of the cable
The thickness of the sealed call cord goes from 5mm the thinnest
to half an inch thickest. The vast majority of sealed call cords
usually have an average thickness of 6.8mm.
Thicker cables are used for large cable runs as they offer greater
resistance. While, the thinner sealed call cords are used in DTT
installations or to pass these cables through tubes that are narrow
and a thicker cable cannot fit in short runs.