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A superheterodyne is tuned to 2738 kHz. The IF is 475 kHz. What is the image frequency?
A carrier of 880 kHz is modulated by a 3.5-kHz sine wave. The LSB and USB are respectively
What is the main problem in receiving a suppressed carrier transmission or a single sideband transmission?
A method of generating SSB signal; that utilizes only one balanced modulator circuit
The power in FM _____ as the modulation index increases.
For _____ percent modulation in AM, the modulation envelope has a peak value double the unmodulated carrier level.
Which of the following is not true about AM?
Which of the following is not an advantage of FM over AM?
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.
Operating method in which the transmission is made alternately in each direction of a telecommunication channel.
The modulation index of an AM wave is changes from 0 to 1. The transmitter power is?
Refers to the first symbol in an emission designation with an amplitude modulated main carrier represented by letter A.
In what classes are SSB linear amplifiers operated
What type of device can be used in balanced modulators?
In AM, maximum desirable output of a transmitter is obtained when its modulation is _____%.
What is the ratio of maximum deviation allowed to the modulating frequency being used called?
What is the carrier power transmitted on a 75-Ω antenna if mf=2 and Vc (unmodulated) is 2 kVpk?
How does a SSB transmitter output power normally expressed?
A form of single sideband emission where the degree of carrier suppression enables the carrier to be reconstituted and be used for demodulation
If the percentage of modulation of an AM amplifier is 88% and the modulation signal is 1 volt, the carrier has an amplitude of _____.
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