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If an AM signal is transmitted at a frequency of 990KHz and the and is allowed to transmit modulating frequencies up to 5KHz, What is the maximum upper sideband that is produced?

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If an AM signal is transmitted at a frequency of 990KHz and the and is allowed to transmit modulating frequencies up to 5KHz, What is the maximum upper sideband that is produced?

(a) 995Khz

(b) 985Khz

(c) 4950Khz

(d) 198KHz

I got this question in an international level competition.

The doubt is from Sidebands and Frequency Domain in section Amplitude & Frequency Modulation of Avionics

1 Answer

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The correct answer is (a) 995Khz

Easiest explanation: Upper sideband frequency = 990KHz + 5KHz = 995KHz.

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