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What is DTH?

• DTH stands for Direct-To-Home television. DTH is defined as the reception of satellite programmers with a personal dish in an individual home. 

• DTH does away with the need for the local cable operator and puts the broadcaster directly in touch with the consumer. Only cable operators can receive satellite programmers and they then distribute them to individual homes.

How does DTH work?

A DTH network consists of a broadcasting centre, satellites, encoders, multiplexers, modulators and DTH receivers. A DTH service provider has to lease Ku-band transponders from the satellite. 

The encoder converts the audio, video and data signals into the digital format and the multiplexer mixes these signals. At the user end, there will be a small dish antenna and set-top boxes to decode and view numerous channels. On the user's end, receiving dishes can be as small as 45 cm in diameter.

DTH is an encrypted transmission that travels to the consumer directly through a satellite. DTH transmission is received directly by the consumer at his end through the small dish antenna. A set-top box, unlike the regular cable connection, decodes the encrypted transmission. 

With the 'CAS' issue not yet resolved, there's 'DTH' coming up to muddle things up for you and me. Doordarshan will launch its Direct-To-Home telecast from 1st April . Broadcasters like Star and Zee are pushing hard for DTH services in India too. 

So what is this DTH all about? How, if at all, does it help the customer? Is it good? Let's find out. No, these are different set-top boxes.

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Why is DTH is being discussed now?

Doordarshan’s plans to launch its DTH telecast from April 1. The government has said it will provide 10,000 dishes free across eight states for increased community viewing of the DTH service. 

The government is estimated to be investing over Rs 300 crore (Rs 3 billion) in this DTH venture.There are four serious contenders for DTH services in India: Doordarshan’s, Star, Zee, and Data Access.

Is DTH superior to cable TV?

Yes. DTH offers better quality picture than cable TV. This is because cable TV in India is analog. Despite digital transmission and reception, the cable transmission is still analog. DTH offers stereophonic sound effects. 

It can also reach remote areas where terrestrial transmission and cable TV have failed to penetrate. Apart from enhanced picture quality, DTH has also allows for interactive TV services such as movie-on-demand, Internet access, video conferencing and e-mail. But the thing that DTH has going for it is that the powerful broadcasting companies like Star, Zee, etc are pushing for it.