DTH (Direct to Home)
What is DTH?
DTH stands for Direct-To-Home. Direct to home technology refers to the satellite television broadcasting process. It refers to a digital satellite service that provides television services direct to subscribers anywhere in the country. This technology is originally referred to as Direct Broadcast Satellite (DBS) Technology.Since it makes use of wireless technology, TV channels/programs are sent to the subscriber's television direct from the satellite, eliminating the need for cables and any cable infrastructure.This will explore and enable the hilly or outskirt market of Nepal where people cannot enjoy the entertainment of TV with various channels through cabel and in cities DTH help to enjoy MPEG-4, DVB-S2 superb quality transmission which would be a milestone in channel broadcasting.
The satellites that are used for this purpose is geostationary satellites. The satellites compress the signals digitally, encrypt them and then are beamed from high powered geostationary satellites. They are received by dishes that are given to the DTH consumers by DTH providers.
In DTH telecast, the signals are transmitted in Ku band (10.7 GHz to 18 GHz) and are received by the subscribers through a small dish antenna (about 60cm in dia.) and a set-top box (or an integrated receiver decoder). The DTH system can also provide many value-added services such as the Internet, e-mail, data casting, e-commerce, and interactive multimedia.
In order to receive DTH service, you need the following two basic components:
- Dish Antenna
- DTH Receiver /Set Top Box (STB)
Dish Antenna:
| It is a dish-shaped type of parabolic antenna (as small as 45 cm in diameter) designed to receive microwaves from communications satellites, which transmit data transmissions or broadcasts, such as satellite television. When the antenna is properly pointed, the dish "catches" the signal and reflects it to the Low-Noise Block (LNB) converter - included with the purchase of the antenna. |  |
Set Top Box:
| It is a digital integrated receiver/decoder (IRD) also called a receiver, which separates each channel and decompresses and translates the digital signal for viewing over a television; and a remote control. |  |
