[cr-india] India's Insat-4B now fully operational

[sakthi vel]

A month after Insat-4B was lofted into space from
French Guiana, the Indian Space Research
Organisation's latest communication satellite has
become fully operational.

The spacecraft reached its final location of 93.5 deg
E longitude on Thursday.

Within one month (of the launch), we have made it
fully operational," Isro chairman G Madhavan Nair told
reporters in Bangalore on Wednesday.
 
  Insat-4B was successfully launched by Ariane-5 ECA
on 12 March from Kourou, French Guiana. Following its
launch, a series of orbit-raising operations were
conducted to place the satellite in its
near-geosynchronous orbit. After those operations were
completed, the deployment of its two solar panels and
two antennas was carried out.

Insat-4B carries the following payloads: 

12 Ku- band 36 MHz and 27 MHz usable bandwidth
Transponders (9 and 3 numbers respectively) employing
140 W TWTAs to provide an EIRP of 52 dBW over the
footprint covering Indian main land.

2 C-band 36 MHz bandwidth transponders employing 63 W
TWTA to provide an EIRP 39 dBW with expanded coverage
encompassing Indian geographical boundary, area beyond
India in southeast and northwest regions.

Kalanithi Maran's Sun Group has booked seven Ku-band
transponders on Insat-4B for its soon-to-launch DTH
service Sun Direct, while Prasar Bharati's free-to-air
(FTA) package DD Direct Plus has booked five.
   
Sun will be using MPEG-4 technology that will allow it
to compress more TV channels per transponder. While
MPEG-2 can pack in around 12 channels, the advanced
compression technology will be able to accommodate
over 20 channels.

Sun may consider itself lucky that the launch of
Insat-4C satellite failed in July 2006 after the
rocket carrying it veered off course and exploded. Sun
had booked six Ku-band transponders (and one more for
digital satellite news gathering) on it for its DTH
service.

By being located on the same satellite, Sun's
subscribers will be able to access DD Direct's
channels without it having to separately put them on
its transponders
//////////////////
Source:
http://www.indiantelevision.com/headlines/y2k7/apr/apr183.php
 


+++++++++++++++++++++++++++ 
   Jaisakthivel 
  Chennai, India. 

     
   
   



      Send a FREE SMS to your friend's mobile from Yahoo! Messenger. Get it now at http://in.messenger.yahoo.com/