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Why do LNB's have to be mounted close to the satellite dish?
The LNB takes the signal reflected off the dish, sends that signal through the coax cable to the receiver, where the receiver decodes the signal unlocking the channels you subscribe to.
Does a discrete signal transmitter and receiver exists?
Yes.
What is a digital local loop?
A local digital loopback is a test that is performed to check the transmitter and receiver of a local modem, or being simpler, it's a test that sends a signal to a remote receiver and waits for the signal to be returned.
What is coherent and non coherent detection reception?
1AnswerA coherent detector uses the knowledge of the phase of the carrier wave to demoduleate the signal.it's simply a product device , which multiply the AM signal by a sinusoidal signal having the same carrier frequency , followed by a low pass filter ( LPF). The product will shift the AM signal to 0 Hz and double carrier frequency , and the LPF will eliminate the later component.2ANSWER:Coherent detectioninCoherent detectionrequires carrier phase recovery at the receiver and hence, circuits to perform phase estimation.Sources of carrier-phase mismatch at the receiver:inPropagationtalking causes carrier-phase offset in the received signal.inThe oscillators at the receiver which generate the carrier signal, are not usually phased locked to the transmitted carrier.coherent detection: Huge need for a reference in phase with the received carrierinLess complexity compared to incoherent detection at the price of higher error rate.Coherent ( synchronous ) detection: in coherent detection , the local carrier generated at the receiver in phase locked with the carrier at transmitter .Non coherent ( envelope ) detection : this type of detection does not need receiver carrier to be phase locked with transmitter carrier
What is Wireless transmission system?
A wireless transmission consists of at a minimum: input signal (the data or analog signal you wish to transmit), transmitter, 2 antennas, space (the final frontier) and a receiver/reproducer. This only makes one way transmission possible. You would need an additional: transmitter, receiver/reproducer and 2 antenna couplers (allows both a transmitter and receiver to use the same antenna) to have 2 way communication. A basic transmitter consists of a power source, a signal generator (oscillator), signal converter/amplifier, mixer (mixes the oscillator and amp signals to create the transmitted signal), output amplifier. a receiver is similar to a transmitter except instead of mixing the signal with the oscillator signal it removes the oscillator signal. Systems can be much more complicated depending on power needs (distance between antennas, frequency interference...) and application (encoder/decoder, security or digital conversion).
How do you reset your tv after storm dish network?
If you are not getting your satellite signal after a storm, unplug the receiver from the electrical outlet for 10 seconds. After plugging back in, the receiver will reboot. It will take about 5 minutes for the receiver to complete the reboot process.
What is the meaning of receiver in communication?
In communication, a receiver is the person or device that receives and interprets the message sent by the sender. The receiver plays a crucial role in the communication process by decoding the message and providing feedback or response to the sender. Effective communication requires clear and accurate message transmission from sender to receiver.
What causes the sporadic loss of satellite signal?
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
Changing the wavelength of the carrier wave to match that of the signal is called?
Changing the wavelength of the carrier wave to match that of the signal is called modulation. This process allows the signal to be encoded onto the carrier wave for transmission and later decoded at the receiver to extract the original signal.
Difference between strobe and handshake signal?
A strobe signal is sent by the signal sender without any regard to the signal receiver. This assumes that the design provides sufficient setup and hold time, along with transmission time, to ensure reliable receipt of the signal. A handshake signal is a bi-directional protocol between the signal sender and the signal receiver, which the receiver uses to tell the sender that the signal has been received. In this system, it often does not matter what the transmission time is, but bandwidth can be reduced since the sender must wait for the handshake to come back from the receiver, effectively doubling the time it takes to send a signal.
Why do LNB's have to be mounted close to the satellite dish?
The LNB takes the signal reflected off the dish, sends that signal through the coax cable to the receiver, where the receiver decodes the signal unlocking the channels you subscribe to.
Does a discrete signal transmitter and receiver exists?
Yes.
What is a local digital loop back?
A local digital loopback is a test that is performed to check the transmitter and receiver of a local modem, or being simpler, it's a test that sends a signal to a remote receiver and waits for the signal to be returned.
What takes place a signal travels from one animal to another and the receiver of the signal responds?
communication
Can a radio receiver be located with a detector?
Yes, a radio receiver can be located with another receiver or tracer, most radio receivers is of the regenerative type and it has a local oscillator that is used to generate an intermediate (IF) signal of 465Khz on shortwave and 10.7Mhz on the higher frequencies like a FM or TV receiver, that oscillator is like a low power transmitter that is transmitting an un-modulated RF signal. Any nearby receiver can pick up this signal although no sound will be heard on the receiver, to be able to hear a signal the tracer is equipped with a BFO, (Beat Frequency Oscillator) that will generate an audible tone when a signal is received, the same way as the local oscillator generate the IF signal but only in the audible frequencies and a signal strength meter, then with a directional antenna, the receiver that is to be traced can be pin pointed.
How does a dish receiver work?
The dish on the outside of the house picks up the signal beamed down from the satellite in space. From the dish the signal is sent to the receiver. The receiver decodes the signal to provide the channels you subscribe to. If you aren't subscribing to a certain channel, a message will tell you so and that you can upgrade to the package with that channel.
What is near far effect in CDMA?
in cdma The near-far problem is a condition in which a receiver captures a strong signal and thereby makes it impossible for the receiver to detect a weaker signal
