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What is an early communication system that uses continuous wave modulation?
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What is the advantage of high level modulation over low level modulation?
Low level modulation: Class B (75%max) power amplifiers are used which offers better quality modulation i.e low distortion probability. Minimize generation of harmonics. The advantage of using a linear RF LP amplifier is that the smaller early stages can be modulated, which only requires a small audio amplifier to drive the modulator. High level modulation: Class C (90%max) power amplifiers are utilized which improves greatly the efficiency of the transmitter but low in quality i.e higher distortion level is expected. A large audio amplifer will be needed for the modulation stage, at least equal to the power of the transmitter output itself. Traditionally the modulation is applied using an audio transformer, and this can be bulky. Direct coupling from the audio amplifier is also possible (known as a cascode arrangement), though this usually requires quite a high DC supply voltage (say 30V or more), which is not suitable for mobile units.
What 2 inventions helped early farmers early with flooding?
Plow and irrigation system
What did early machines first run on?
What did early machines first run on
What are the typical work hours for a carpenter?
Very early to early afternoon. Most hate to work in the heat and the early morning is usually the coolest time of day so they like to be on the jobsite at that time.
Who was an early kingdom centered on the island of java and Bali?
Borobudur was an early kingdom centered on the island of java and Bali.
When is the data communication system start or happen?
telegraph in early 1800s.
What is early effect?
the early effect is a width base modulation due to which collector curren inc by inc of c-b voltage
What was a early form of communication in Islam?
The early form of communication in Islam wasletter writing.
Where is amplitude modulation used?
we have two types of signals namely the message signal and the carrier signal. so if the amplitude of the carrier is varied in accordance with the instantaneous value of the message signal then it is known as the amplitude modulation.if we want to transmit our message signal to long distances we need to do modulation and hence amplitude modulation is done. by amplitude modulation we generate side bands which consists of the part of the message which signal which is demodulated at the receiver to get back the original message signal we are using this amplitude modulation in radio communication. It will work in the traffic also with out disturbances but frequency modulation didn't work without disturbances.
What were the early wireless keyboards used for?
they are used for communication.
Is puberty continuous development?
No. puberty is not a continuous development. Some people grow a lot in early parts while some grow a lot in later parts of puberty.
Were petroglyphs and hieroglyphs an early form of verbal communication?
No, petroglyphs and hieroglyphs were early forms of written communication, not verbal communication. They involved using symbols or pictures to convey meaning rather than spoken language.
AM radio signals are?
Amplitute Modulation signals. a modulation(mixing)method used in early radio transmissions.in many countries, radio transmissions below 30 Mhz,are still using this method.short wave,medium wave transmissions,and some extent of VHF transmissions are possible in this method.
What early communication devices did modems replace?
Acoustic couples
Three early forms of communication were?
petroglyphs cuneiform hieroglyphs
What do you mean by early warning and communication team?
Early warning and communication team is a team which is made to make people aware about a disaster which is to be occurred. This makes people to get ready to face that disaster.
What does the AM in AM Radio stand for?
Amplitude Modulation (AM) and Frequency Modulation (FM) AM tuning changes the amplification size of the waves being received, FM tuning controls the frequency of the waves being received. As commercial radio rose from it's early form, the AM 'band' stood for years as the only type of radio available. As technology improved, engineers discovered that they could modulate 2 channels of higher quality sound inside of one carrier frequency. The Federal Communications Commission designated from 87 MHz to 108 MHz for the new FM format. And, with this, FM radio was born.
