But in satellite communication, I can't up-link and down-link the signals without permission or some code ...( I think)
Downlink there is nothing anybody can do to stop you. Well not unless your government has some secret police that go around looking for dishes, but even they can be hidden. I heard that Malaysia is one country like this. I've not paid much attention to home satellite users whenever I've been there.
But in most of the free world, there is nothing stopping you receiving any signals you like. There may be laws that say that you cannot do it, but those laws are usually very difficult to enforce and prosecute. In reality satellite service providers are free to air because they want you to watch them. The various religious channels are like this. Or in the case of pay TV, the service providers protect their content by scrambling the signal. Even breaking those codes is quasi legal.
In Australia the law allows anything that is not mentioned. The only restriction is not to listen to telephone calls. So satellite traffic can be received by anybody (as long as it is not phone calls). Like most countries we have pay TV and those services were cracked and broken. Doing this and watching the services for free has never been illegal. What you do with the information you recover is your business. The emphasis is on the service provider to provide their security, not the taxpayers.
So if you cracked pay tv, then you could watch it for free. Even if there was a law against it, there is no way the authorities could catch or prove that you were doing it.
However, several people were caught because they were selling cracked cards. They were breaking the law because they were selling information and tools to enable other people to breach program content. Even then these cases were very marginal in this country and the penalties were minor compared to some of the money these people made selling cards.
Uplinking to satellites, well that's a different story. Generally the government will grant you a licence for an earth station enabling you to legally use the uplink bands.
Then you need the permission of the satellite owner to lease transponder space on their satellite.
In the case of two way satellite units used for internet etc. They come under a class licence system. The service provider (who may not even be the satellite owner)
leases the transponder space and ensures all the customer equipment meets a certain specification. They also control the two way equipment, like what frequency, power and when they transmit their data to the satellite. The customer does not need to worry about licences because the service provider takes care of it.
But if you're a pirate, then the government doesn't know you have the equipment and nor does the satellite owner. If you transmit to their satellite, there is very little they can do about it. They really only have two options. 1> Jam your signal or 2> shut down that transponder. But since it has paying customers on it, they can't do that.
The best they can hope for is to monitor the content of the signal and try to work out from this information who the pirate is.
A smart pirate will just encrypt the signal, and they will get no information from it.
Is there any place where i can get this info.
The satellite owners know who is (legally) using their satellites and they keep a record of that. But they're not going to share that information with you or anyone.
It's sensitive corporate information.
The only way for you to find these small services is to buy a good spectrum analyser (or borrow one) and a good dish and LNC and scan the entire downlink spectrum for even the smallest signals.
This is an example...
**broken link removed**
The symbol rates and encoding you'll have to guess or blind scan.