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How are digital signals in radio broadcast converted to analog signals inside digital transmission equipment before sending the signals to the antenna for transmission?
Wiki User
∙ 15y ago
The digital signals is not converted BACK to analog! it is transmitted in digital form and the receiver is converting it back to analog to drive the speakers. The signal from the microphone is converted from analog to digital with an A/D converter chip, digital signals consist of pulses of different lengths that is switching the transmitter on and off in about the same way as the old Morse Code transmissions but at a much higher rate (millions of times higher)
Wiki User
∙ 15y ago
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What is the function of a repeater in terrestrial microwave transmission?
Repeaters may be installed with each antenna to increase the distance served by terrestrial microwave.Repeaters received the signals and converted into transmittable form and pass it to the next antenna.Repeaters can broadcast the regenerated signal at its original frequency or at modified frequency depends on the system
Why dipole antenna not used for high frequency?
Depends on what you mean by high frequency. The rabbit ears antenna used in broadcast TV is a dipole and is used for VHF.
How signal reflects back in an antenna?
In a properly matched antenna, signal does not reflect back - the transmission line and antenna combination is seen, electrically, as an infinite line - so there is no reflection - again, when properly matched.
What is the purpose of an antenna coupler?
1.transmission and reception 2.impedence matching 3.sensor to em waves 4.suppressing
Is antenna passive or active component?
An active antenna is an antenna which has an amplifier attached very closely to it. The antenna/amplifier system is called an active antenna. It is used for receiving signals only. The idea is to set the signal-to-noise ratio (SNR) before the signal travels along a transmission line where it is susceptible to interference and loss.
What does a broadcast transmission do?
A broadcast transmission transfers radio waves through the air which are then picked up by an antenna and converted into either sounds or picture images.
What is the function of a repeater in terrestrial microwave transmission?
Repeaters may be installed with each antenna to increase the distance served by terrestrial microwave.Repeaters received the signals and converted into transmittable form and pass it to the next antenna.Repeaters can broadcast the regenerated signal at its original frequency or at modified frequency depends on the system
What is direct brodcast?
Direct - direction - to point something at a specific object Broadcast - transmit - to send something from one place to someplace else or multiple places at the same time Direct Broadcast - directional transmission - to send something from one place to specifically someplace else and no where else Example: A radio/tv station transmits it's broadcast from its omnidirectional, or in every direct, antenna A multi-building company transmits it's network connection from one building to another with a directional antenna The advantage of direction broadcast is you can choose where the signal goes and thus who gets it. Also, it tacks less energy for a direction antenna to send the same information over the same distance and the omnidirectional antenna.
What are the components of an earth station antenna system?
Antenna Low-noise amplifiers (LNAs) or low-noise down-converters High-power amplifiers (HPAs) Signal processing equipment (e.g. down-converters, up-converters, IF amplifiers, modems and codecs) Transmission and signalling equipment at the interface between the terminal and the terrestrial network Supervisory and control equipment Enclosures to protect the equipment from the environment
What two functions does an antenna performs?
antenna can be used in both transmission and reception
Why TV antenna need to point to south?
The tv antenna should point toward the broadcast station's transmitter tower. South has nothing to do with it.
What is a broadcast repeater?
A television repeater can be a TV translator. It receives a distant station thru a receive antenna mounted high on a tower then re-broadcast this signal from transmit antenna(s) on a different channel, mounted on the same tower.
What are the advantages of using the RCA Indoor Amplified TV Antenna?
The RCA Indoor Amplified Antenna will give you better television reception compared to a non amplified antenna. The amplifier will boost any signal that the antenna receives, giving better reception.
What kind antenna you should use with HDTV converted box?
A VHF/UHF antenna is the correct one for HDTV. If you are using a indoor antenna, the amplified ones are better.
Why dipole antenna not used for high frequency?
Depends on what you mean by high frequency. The rabbit ears antenna used in broadcast TV is a dipole and is used for VHF.
How do you broadcast TV channel?
The original TV was only broadcast TV. It's done the same way as radio us broadcast. Tall antenna towers send out (broadcast) radio waves that send the TV signal long distances.
How does a digital antenna differ from a regualr antenna?
A digital antenna offers a clearer sound and signal than a regular antenna. There is no interference or static. However, while an analog antenna can get the signal through a hill, the digital antenna must be able to see the broadcast tower.**************************************************************There is no difference. An antenna is designed for a particular frequency or band of frequencies. The mode of modulation is totally irrelevant.
