Telly Truths

Direct-to-Home television is supposed to be the better technology. But does it really have an advantage over good ol cable TV?

Published: Sep 5, 2009 08:46:10 AM IST
Updated: Feb 21, 2014 12:33:50 PM IST

Enabling Choice
Before the advent of DTH television, local cable operators carved out their own neighbourhood fiefdoms and guarded them zealously (mostly by sabotaging the equipment of new rivals). All of them offered the same preset bouquet of channels. In contrast, DTH users can select channel plans based on preference and budget, and can even change their DTH provider literally overnight.

But, a Limited Choice
DTH users don’t have the option of watching a movie of their choice at their convenience. That’s because DTH is a one-way transmission medium (from satellite to viewer). That doesn’t mean cable TV offers this today in India, but it can. Comcast in the US currently offers thousands of high-definition movies and TV shows for on-demand viewing.

The guns are loaded as DTH and Cable TV get into a face off. Who wins this round?
Image: Vidyanand Kamat
The guns are loaded as DTH and Cable TV get into a face off. Who wins this round?
Not the Only Digital Option
The “digital technology” label, and with it the implicit promise of better choice and quality, has helped sell countless electronic devices. DTH operators too had positioned their services as a digital alternative to cable TV. But in the last few years, cable operators too have gone digital. Today, digital cable connections (16 million) outnumber DTH connections (13 million) in India, according to the Cable and Satellite Broadcasting Association of Asia.

A Smarter TV
A Dish TV subscriber can search for job vacancies on his TV, a TataSky one can look for prospective marriage partners on his, while those watching Airtel Digital TV can narrow down travel packages across India. This is possible because DTH providers have partnered with companies like, and In combination with the mobile phone as a return channel, DTH can offer a broader entertainment experience to subscribers.

Fuzzy Logic?
DVD quality picture and sound is technically possible, but in reality there’s a huge difference. That’s because a typical DVD video stream requires a bandwidth of 4-5 Mbps, whereas DTH operators use only a fraction of that. According to satellite monitoring service Satco DX, Dish TV uses 2.45 Mbps to stream movies on HBO, Tata Sky 1.5 Mbps, while Big TV uses a mere 0.1 Mbps.

No Room to Expand
The uneven and fast-falling quality level of DTH in India is because there is a severe shortage of satellite spectrum for each operator. They have to either lease transponders on INSAT satellites, or go through ISRO to sub-lease capacity on foreign transponders. Airtel has just seven transponders. Tata Sky has 12, offering a total of 432 MHz of bandwidth, whereas digital cable operators can access 800 MHz. This will prevent DTH operators from adding new channels in the near future.

(This story appears in the 11 September, 2009 issue of Forbes India. To visit our Archives, click here.)

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  • Rupak Ranjan Roy

    One big disadvantage of DTH is the disappearance of picture during rains. Though things have improved marginally, it still is a pain to watch Tatasky during the monsoon months. Cable TV has no such problems.

    on Sep 6, 2009