There are many reasons why you may have no signal from your satellite. Your service could have been disconnected for example.
A satellite signal will be a radio signal. And a radio signal in space travels at the speed of light.
The satellite signal uses microwave radiation and water absorbs microwaves. So when it rains or there are thick clouds the signal from the satellite gets absorbed and if enough is lost by this process your Dish Network receiver will lose signal
The satellite signal can be blocked by various things.
A satellite receievr, is a tv receiver, which connects to the satellite anntena, than to your tv, and decodes the information coming from the satellite signal into video and audio signal, so you can watch tv channels.
A satellite antenna has one very important purpose. It is designed to allow a home to receive a satellite signal, which then allows users to receive a television signal.
In satellite communication, up link refers to the signal traveling up to the satellite while down link refers to the signal coming from the satellite down to earth.
It sends a signal directly to the satellite and the satellite pinpoints the location of it.
Satellite TV Providers transmits the signals through their satellite dish converting it first from digital signals to analog signals. These signals which were converted will be transmitted to the satellite. The satellite will then transmit the analog signals per request of the satellite dish connected to the receiver of the subscriber. Once signals are received, it will be converted back to digital signals which can be read by the receiver and be displayed to the television.
A downlink signal; a Ka Band signal
the alternator
Inclement weather in the form of heavy rain, snow, or thick cloud cover can affect your satellite signal - it is known as rain fade. The satellite signal is fragmented as it attempts to pass through the heavy rain drops causing signal loss or pixelation (breaking up). This occurs with all satellite signal.
A downlink signal A Ka Band signal