An antenna is an electric device, normally a transducer that converts radio frequencies in to alternative current. Until late 1980s antennas were larger in dimension and antenna installations are a difficult task. There are numerous kinds of antennas available. To mention some:
� Wired antennas � Micro strip antennas � Aperture antennas � Traveling wave antennas � Log-periodic antennas � Dish antennas
All these antennas have respective pros and cons. The technicians or antenna builder suggests one of these types of antennas depending on the necessity of their client. Introduction of Direct To Home (DTH) concept has attracted dish antennas to the industry. These dish antennas offer more image clarity and have made tv seeing a more interesting matter to people. These antennas work on micro wavelengths that have a frequency more than 3 GHz. Dish antenna installations are easier and requires very less time compared to conventional antennas.
Certain|Specific} different accessories or devices are used with antennas to give effective and comfortable screening. Following would be the accessories that can be fixed during aerial installation:
� Amplifiers: As its name infers, this system helps in amplifying the signs to give optimum quality and strength. Amplifiers are employed in areas where the channel signals are weak.
� Boosters: Boosters are not used nowadays. Boosters were used with standard antennas to lessen grains and unwanted sound.
� Set top boxes: These boxes are employed mostly in DTH idea. The set top box matches the dish antennas and get sign from them. This assists to change and see various stations for which a remote control device will be given with that. DTH comes in 2 popular manners namely standard and higher definition.
Aside from default stations, the audiences can subscribe for their preferred or preferred channels by calling the DTH service providers.
Several antenna set up companies operate around the globe and provide solutions to their clients. The clients who have a antenna or aerial installation need can hunt for the record of installers in their area by simply surfing the web through search engines. The customers may also get a free price quote from different antenna installation firms in their place by giving their requirements. The consumers can also see the opinions of these aerial installation companies and choose a service provider based on the purchase price quote and feedback offered by different clients who have already used their services.