Why not INSAT satellites carry more Transponders ?

URPradhan

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#1
Dear Friends

I could not understand the reason behind the limitted number of TPs carried by INSAT series satellites, including the to be launched INSAT 4B :-Nooo

It has only 12 KU nad 12 C TPs, instead for ex Measat3 has 24 Ku 24 C :eek:

What will be the extra cost required to add more TPs to a satellite ? Is it equal to Cost Per TP x No Of TPs ??

It could be a business for ISRO if thet would ve more TPs
 

Analoguesat

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#2
24 Ku/ 24C is nothing. Hotbird 8 carries 64 tp's which can be operated simultaneously. (Plus spares of course)

If you double the number of tp's then you effectively double the power requirements of the satellite. This means more complicated electrical / electronic circuits, and more solar panels to power them. Plus double the battery capacity to run the satellites during the eclipse times.

All this adds weight, which costs more to launch - Hotbird 8 is a monster which weighs in at nearly 5 metric tonnes.

Insat have gone dowwn the route of smaller cheaper satellites
 

member91040

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#3
Due To Expensive, & Few steps Behind Othres.
 

mehra

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#4
URPradhan said:
Dear Friends

I could not understand the reason behind the limitted number of TPs carried by INSAT series satellites, including the to be launched INSAT 4B :-Nooo

It has only 12 KU nad 12 C TPs, instead for ex Measat3 has 24 Ku 24 C :eek:

What will be the extra cost required to add more TPs to a satellite ? Is it equal to Cost Per TP x No Of TPs ??

It could be a business for ISRO if thet would ve more TPs
govt operates such, in all fields in india. nothing can b done.
 
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