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for building developers, and all who want to do their antenna installation properly
SignalNET - how to wire the house - signal/multimedia installations
Building houses, every builder begins with the foundations. The interior finish has to be started with cabling. When designing electrical system it is indispensable at the same time to take into consideration signal cabling: telephone, computer, RF (terrestrial and satellite TV, FM), door entry system etc. Nowadays many developers choose flexible systems like SignalNET - the final form of the applied equipment can be configured by the owner - to satisfy their individual needs (it is also connected with the money they want to spend).
We recommend reading the article >>> SignalNET
Not long ago the offer of television was limited to transmission of two programs. A single antenna mounted on balcony and connected directly to the TV set made the whole installation. Since then the number of programs has considerably increased, and new satellite and cable technologies have been introduced. The real revolution in this domain is coming now. Television installations enable access to the Internet, phone conversations, CCTV monitoring and control of alarm systems, remote reading of meters (electricity, gas, water) and internet shopping.
Development of television and telecommunications techniques promotes quick spreading of modern antenna installations just like in the past the common use of electric devices extorted careful designing of electric installations. Usually the law concerning construction of buildings indicate necessity of a design for antenna installation only in the case of multi-family buildings. However, lack of such an installation in one-family house considerably limits access to the latest achievements of television technology. We provide some advice for all who would like to do such installation.
First of all one should have the possibility of using terrestrial television as well as cable or satellite broadcasts. The whole installation should be designed the way that further modernization and replacement of elements will not require demolition of the building structure (updating may be necessary due to development of technology, e.g. use of optical fibers, digital techniques etc). Internal installation should provide every room with an outlet enabling reception or emission (from VCR modulator, RC extender etc) of RF signals. The concept of an antenna installation may be derived from the procedure presented below:
1. Basic guidelines.
1.1 Place and way of mounting the antennas
Most of damages in antenna installations are the result of collapse of improperly fixed mast or breaking badly laid cable lines. Nowadays, the most popular solution is clamping the antenna mast to a chimney. Masts can also be fixed with wall brackets. Satellite dishes are usually fastened on separate masts. Antenna cable should enter a building already on the roof.
A WLAN antenna has to be mounted the way guarantying mutual visibility with the counterpart (usually of the Internet provider).
1.2 Kind of installation (pass-through, star-shaped, mixed)
Currently the pass-through installations are not preferred, especially in larger systems. Star installations are more universal and more resistant to interferences induced by connected receivers. They are used both for distributing terrestrial and satellite programs (e.g. multiswitch installations).
We recommend the article >>> TV / SAT TV / CCTV Installation Diagrams
1.3 Method of laying cables
In new office blocks and even apartment buildings cable trays become more and more popular solution for placing electrical, computer, telecommunications and RF installations.
There should be planned main vertical conduit from the basement to the attic, with possibility of leading branches on every floor. Such layout will allow to implement modern installations, change location of main devices etc. It is not recommended to lay unprotected cables just under the plaster. Each cable has limited life and can also be accidentally damaged (e.g. when drilling holes in the wall). The exchange would be extremely difficult.
If the installation is to be laid traditionally, conduit tubes should be applied.
1.4 Location of splitters, tap-offs and amplifiers (with regard to possibilities of power supplying)
The basic rule is that amplifiers should be located as near antennas as possible. This recommendation is best realized by using mast amplifiers - but they are exposed to the erosive action of weather conditions. Attic seems to be the best place for installation of indoor amplifiers, however one should remember about providing mains supply. This location is also much better for maintaining the equipment.
The splitters should be mounted in easy accessible places without a risk of vapor condensation (highly corrosive agent).
1.5 Layout of antenna outlets
Antenna outlets are manufactured in flush or surface versions. Especially in the case of flush equipment it is essential to plan out the positions in a rational way.
2. Selection of elements of an installation with regard to quality of signal, received programs and the risk of interference:
2.1 Antennas
For receiving terrestrial broadcasts there are used antennas working in the bands: FM (radio), VHF (mostly only for one TV program; not used in some countries e.g. Great Britain), and UHF. In the case of FM antennas it is well to pay attention to receiving signals in both polarizations, horizontal and vertical. Among TV antennas, the YAGI-UDA usually provide the best results. The "azimuth-elevation" dish mount enables reception from one satellite position only. But mounting two converters on a double mount, it is possible to receive programs from two close satellite positions. Reception of broadcasts from several satellites is possible by use of "polarmount" type of mounting and positioner. The recommended sizes of dishes depend on geographical location of the building and the satellites that should be received.
Wireless installation is currently the popular way of Internet access. The users employ wireless adapters in their computers, or external access points. They have to get informed on the band used by the ISP, and the needed parameters of the equipment (they mainly depend on the signal level).
We suggest reading the article >>> Selection of Terrestrial TV Antennas
2.2 Cables
Coaxial cables of 75 ohm impedance are widely applied. For reception of satellite programs there have to be used coaxial cables characterized by low loss in 950-2150 MHz band. These days buildings are being equipped with uniform cabling, so the choice is one - satellite cable. We recommend cables from the TRISET-113 family. For outdoor applications one should use PE versions.
Article on modern cabling: >>> Wiring in single-family homes
For connecting access point with the antenna there should be used coax working up to 6 GHz. Such cable has much more better parameters in 2.4 GHz band, but first of all - it will allow to migrate the system to 5 GHz band in the future.
We recommend the article >>> Use of coaxial cables in WLAN systems
2.3 Amplifiers, splitters, tap-offs
Antenna amplifiers are used in the cases when input signals are weak, or cable lines are long, or the number of sockets is large. For a small installation and good signals one can use broadband amplifiers with built-in input diplexers. In more difficult conditions the proper solution is to use channel amplifiers that amplify only the desired channels, which eliminates external interferences, as well as unwanted products generated by overdriven broadband devices.
Article on RF amplifiers: >>> AMPLIFIERS in antenna installations
Article on passive distribution devices: >>> Splitters and tap-offs
2.4 Antenna outlets
Typical antenna outlets have two paths: TV and FM. For reception of satellite programs one should use satellite outlets with 'SAT' mark. Universal outlets ensure return channel (indispensable e.g. for Internet access).
The whole range of items sold in our store has been divided into sections. When choosing a section, on the right there is available connected information.

We especially recommend the article providing detailed and universal diagrams of antenna installations.
DIPOL promotes modern cabling systems for buildings. More information in the article: