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What type of device can be used in balanced modulators?
For _____ percent modulation in AM, the modulation envelope has a peak value double the unmodulated carrier level.
The bandwidth in _____ depends on the number of significant sidebands
The typical audio modulating frequency range used in radio and telephone communications is
The PM signal produces by an FM circuit is called
Refers to the first symbol in an emission designation with an amplitude modulated main carrier represented by letter A.
In AM, maximum desirable output of a transmitter is obtained when its modulation is _____%.
Which of the following is not true about AM?
If a 7-A carrier is modulated 100% by a sinusoidal tone, how much does the antenna current increase?
What is the power saving when the carrier is suppressed in a regular AM signal modulated to an index of 100%?
The term used to refer to the condition where the signals from a very strong station are superimposed on other signals being received
What is the approximate bandwidth of an FM with a modulation factor of 12.5 and a modulating frequency of 10 kHz?
What is the ratio of maximum deviation allowed to the modulating frequency being used called?
An indirect method of generating FM is a
In a narrow-band FM system, the deviation ratio is commonly one and the highest audio frequency is generally limited to
What produces splatter in an AM transmission?
The rms antenna current for an AM transmitter increases by 15% over the unmodulated value when sinusoidal modulation is applied. Find the depth of modulation.
What is the carrier power transmitted on a 75-Ω antenna if mf=2 and Vc (unmodulated) is 2 kVpk?
What is the main function of a balanced modulator?
What is the primary advantage of DSBSC in AM?
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