satellites?

Question

what is teh cost of launchign a commubnications satellite?

What are the frequency bands used for satellite communications?

a. between the earth and the satellite:
 
b. between the satellite and the earth:
 
c. between satellites:

What is the “focus” of a satellite dish?
 
 What is the typical lifetime of a satellite?

Answer 1

The average cost of a Satellite is approx $100,000,000

The Cost to Launch a Satellite right now is at about $10,000/per pound. The weight of the average satellite is around 9500 pounds.

So it costs approx $195,000,000

Here is info about frequencies:

http://www.lyngsat.com/

General Info:

http://en.wikipedia.org/wiki/Satellite_dish

http://en.wikipedia.org/wiki/Satellite

The FOCUS of a satellite dish is exactly where the dish is pointed in the sky. Satellite dishes must be pointed exactly at a Satellite that is in a geosynchronous orbit (always in the same spot in the sky).

A satellite's life span is limited to the lesser of either power or propulsion life.

Answer 2

Launch cost can be $100 million or more, but the satellites are really expensive to build, usually several hundred million.

TV satellites use frequencies between 4 and 12 GHz. I am not sure what frequencies other kinds of satellites use, but it is usually a really high frequency.

The dish is a radio telescope. It is the mirror that reflects the radio energy to a focus like a telescope mirror reflects light to a focus to make an image.

Satellites usually last about 20 years I think. The limiting factor us usually the amount of propellant the tanks can hold. Without propellant they cannot stay in the right place and point their antennas in the right direction.

Answer 3

sory cant help u