February 2010

DISH DOCTOR
The DISH DOCTOR section of our magazine has proved to be extremely popular.

We receive over 50 queries Every Day, and each of these queries are individually replied to, usually within 24 hours. This demands large resources.

We remain committed to supporting all our subscribers, and will answer each of the queries individually.

However the resources and costs involved may not permit us to extend this facility to those who have not subscribed to the magazine.

Hence, with your queries to the “Dish Doctor” please include your Subscription Number and Name / Company Name under which the subscription has been taken.

If you do not have your subscription number handy, please send us the Name / Company Name under which the subscription has been taken, along with your detailed postal address at which you receive your copy. We will use this information to verify your subscription in our books.

We request our website readers to subscribe to our magazine, and support us in maintaining the high quality of content and advice that we have always provided. Thank You.

– Editor & Executive Publisher.

 

BROADCAST OF ILLEGAL CHANNELS

Q: Is it illegal to re-transmit the ARY, Q tv and Madni channel on our cable TV network ?

We have been informed in your magazine that these channels cannot be carried on Indian Cable TV networks. However, our competing network carries these channels, and our customers are also asking us for these channels. How can we handle this situation ?

SDM - Anjar, Gujarat.

ANS: Yes, these channels (and several others) are not listed as approved channels by the Indian government's Information & Broadcasting ministry. No Indian Cable TV network can carry any un-approved channel, in their analog or digital feed.

This magazine carries an updated list of approved channels every 3 months, for reference of Cable TV networks.

According to the Cable Act, any network that carries unauthorised content, is liable to a fine, having their equipment seized and even a jail sentence for the Cable TV network owner. If a network in your area is carrying un-authorised channels, you should inform the local police station, the local head post office or the District Magistrate, highlighting the crime.

They local authorities will take appropriate action, under the law.

NOTE: The I&B minister has told parliament in December, that the government has decided to take stern action against any Cable network transmitting un-authorised channels. State Chief ministers and the Home Ministry (under who's purview the police operate) have been asked to crack down on errant networks.


BUYING A DIGITAL HEADEND

Q: I am cable TV operator and in business from last 10 years. My firm is rebroadcasting 72 channels. As you know Headends are shifting from analog to digital, and we want to shift our 25 pay channels for digital delivery.

There are may companies from different parts of world, that offer digital headends. Which one do you suggest we buy ?

Instead of buying MPEG 2 modulators why not to buy MPEG-4, since n future, MPEG-2 will be replaced by MPEG-4 ?

We have been offered a particular brand (Brand Name withheld), they are cheap in price. Also if we buy a 60 Channel headend, they will give us the SMS (Subscriber Management System) free of cost. The product is also easily available in our market. However, the STBs from this brand do not include a CI (Common Interface), and address each box through its MAC address.

Please guide us.

Asad - By E-Mail.

ANS: 1. Yes, the world is rapidly migrating towards digital and most governments have indicated a "Sunset Date" when analog TV transmissions will be discontinued.

2. Identifying the most suited digital cable TV headend is a HUGE business decision, and you need to take this decision VERY carefully, considering not only the amount of money you have available to spend but also the long term security and scalability (ability to add more STBs and channels) of the system.

3. MPEG-4 technology will certainly provide more digital channels in the same analog bandwidth (i.e. higher compression). However, MPEG-4 STBs are, today, far more expensive than MPEG-2 STBs. Certainly, 5 years from now MPEG-4 STBs are most likely to represent bulk of the STBs sold. But are you willing to pay almost double price for a MPEG-4 Headend + STBs today, compared to MPEG-2 ?

4. MPEG-2 STBs cannot receive digital channels compressed using MPEG-4. This is a major decision that you will have to take and live with for the next few years if & when you shift from MPEG-2 to MPEG-4 STBs you will have to offer your customers an attractive buy back option.

5. The brand that you have mentioned offers an integrated system including STBs and their own addressable solution, which works only if you install their full solution which includes the headend and STBs. Their solution does provide for selective choice of channels besides simple authorization / deauthorisation of the STB.

6. While an encryption system represents a significant cost, in India, at least 1 company has already set up a central facility, enabling smaller cable networks to use the central facility against a monthly charge which is linked to the number of addressable set top boxes addresses. Other CAS vendors are also planning similar central facilities for the Indian market.

7. A Headend In The Sky does provide a quick and low cost option to provide digital CATV from even small cable TV networks. However the network effectively becomes a non-separable part of the HITS operator. They cannot break away from the HITS platform, and shift to another HITS or MSO, since their consumers will not be able to use the HITS STBs on any other platform. Refunding each customer the cost of the HITS STB would not be financially viable.

There is no single recommendation that we can provide. Each cable headend will have to take their own decision based on their budget today, growth plans etc.

Take time while making your decision, weighing not only costs, but several technical factors, including those listed above.


DIGITAL FOR TINY NETWORKS ?

Q: I am a regular reader of your magazine. My subscription number is 11027. I am a cable operator from Solapur, Maharashtra. I want the following information about digital control signal distribution and STB:

1. For installing 100 STB. How much will we have to spend?

2. I have installed RG-11 wire from amplifier to amplifier. To reach subscribers I have RG-6 wire. Will I have to change this wire?

3. All my amplifiers are 860 MHz with china IC. For a digital system should I change this? What type of change?

4. Can this be profitable for a small cable operator? And without STB can I get signal?

Regards

Giri P.D. (Solapur), Maharashtra

ANS: Digital Cable TV headends are still more than 10 times the cost of an analog headend. Hence it is not currently viable to set up a digital headend for very small networks such as yours. Typically a low cost digital headend will cost approx. Rs 25 Lakhs for 100 FTA channels or Rs 50 Lakhs for 50 Pay + 100 FTA channels.

Whether you encrypt your digital signals or transmit them to your customers Free-To-Air (FTA) each customer must have a digital STB to be able to receive digital signals. Each digital STB cost approx. Rs. 2,000 to Rs. 2,500.

A Low Cost Digital Headend Will Cost Approx. Rs 25 Lakhs For 100 FTA Channels Or Rs 50 Lakhs for 50 Pay + 100 FTA channels.

A digital headend is both expensive and elaborate to set up and maintain. It would be viable to set up a digital headend for a minimum of approx. 10,000 subscribers out of which may be 50% will take digital STBs. For the others you will have to simultaneously operate an analog headend. Both analog & digital signals can be transmitted at different frequency band, simultaneously, on the same cable TV network.

Your coaxial cable distribution network, in principle, support digital transmission and reception. A lot depends on not only the quality of cables but also the workmanship such as proper connectors and use of good quality splitters and tap-offs. Also you should try to ensure that no customer receive the signal after more than 3 or 4 amplifiers.

Optical fibre today is available at a lower cost than even RG-6 cable! Hence for most reasonably large networks (1000 points & above) a fibre optic distribution system will not only provide better signal & picture quality to your customer, but will also be cheaper.

As the number of channels demanded by customers increases, it will be difficult for very small networks such as yours to provide them the large number of channels they want. Over the next few years, you will either have to group together with your neighboring cable operator to establish a bigger and better headend or take a digital input signal from either a local MSO or from a Headend In The Sky (HITS).

WWIL currently operates a HITS platform. In December 2009 the Indian Govt. had declared the licensing guidelines for new HITS platforms to commence operation. Probably 1 or 2 more HITS platforms will commence operation over the next 1 year, providing you a choice of HITS operators which whom you can partner.


MORE KU BAND ON ST-1 ?

Q: I am regular reader of your magazine & my subscription number is 13115.

Besides the Videocon DTH platform, are there any other Ku band signals on the ST-1 satellite ? If so, please provide details.

Chandra Sekar, By E-Mail

ANS: Apart from the Videocon DTH platform, there are no other channels, free or pay, available on the India footprint from the ST1 satellite.


2 OR 4 POLARITIES ?

Q: I know of only 2 polarities - one H (horizontal) and second V (vertical).

However, I saw L and R polarity in your list of channels on Yamal satellites. Please tell me something about L and R polarity. Thank you.

Rinku, By E-Mail.

ANS: Horizontal & Vertical Polarity are 2 parts of a satellite system using Linear Polarity.

Similarly most Russian and Eastern Bloc countries use CIRCULAR polarity - consisting of Right Hand Circular (in short R or RHCP) & Left Hand Circular (in short L or LHCP) polarities.

May we suggest that you check out the book "HOW TO …. Part 1" (English or Hindi versions) which explains all of this and much more in easy to understand language & diagrams. Details of how to purchase these books is available at the website at www.satcab.com, and in advertisements in this magazine. n

 

Dish Doctor
Ask us any questions or problems faced by you in the course of your business. Our DISH DOCTOR will try and answer them in the best way possible, in the simplest terms, avoiding the unnecessary use of technical terms where possible. The service is available free to our readers and subscribers. Send Your Queries at scatmag@scatmag.com