What are the disadvantages of satellite communications?

Answer 1

advantages

• used for long distance communication
• high speed data transmission
• many reciver stations can receive signal from the same sender station
• are used for spying and can detect where nuclear weapons are launched
• take pictures to help predict the weather
• used for GPS (sat-navs) and for guiding ships and airplanes
• Scientists use the

disadvantages

• very costly, haha.
• Smart. Very smart ^^

Answer 2

Advantages: communication is instant wherever you are, source of information to educate and informs us, assists in building economy and infrastructures, smooth operation of business as in the use of internet faxing as an alternative to a paper-ink-fax machine.

Disadvantages: creation of scams, wiretapping, money, etc

Answer 3

* Signal delay: Because the satellite is 36,000km from the earth there is an appreciable delay (around 0.25s in one direction, 0.5s for a round trip); this can introduce unacceptable latency into 2-way data networks (e.g. Internet) and make conversation difficult in voice circuits.

* Cost: Satellites are large and expensive, thus there is a large capital cost in building and launching a satellite; this means that you have to be able to get a lot of customers or support many services before launching a satellite, to be sure that the costs will pay back.

* Impossibility to repair and maintain: It's not possible to get a repair person out to the GSO, so if components fail they can't be fixed; satellites are made from "space qualified" components with high reliability but redundant components also have to be flown and switched in if elements do fail; a major failure can result in the loss of the whole satellite.