What is an analog signal?
(N/A) An analog signal is a continuous signal that represents physical measurements. It varies smoothly with time and can take any value within a given range. Examples include sound waves,light intensity,and temperature variations. Unlike digital signals,which are discrete and represented by binary values ($0$ and $1$),analog signals are continuous in both time and amplitude.
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The $T.V.$ transmission tower in Delhi has a height of $245 \ m$. The distance up to which the broadcast can be received (taking the radius of the earth to be $6.4 \times 10^6 \ m$) is .......... $km$.
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View Solution$A$ ground receiver station is receiving a signal at $5\, MHz$ transmitted from a ground transmitter at a height of $300\, m$,located at a distance of $100\, km$ from the receiver station. Given: Radius of Earth $R = 6.4 \times 10^6\, m$,$N_{\max}$ of ionosphere = $10^{12}\, m^{-3}$. Identify the mode of propagation.
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View Solution$A$ baseband signal of $3.5\, MHz$ frequency is modulated with a carrier signal of $3.5\, GHz$ frequency using amplitude modulation. What should be the minimum size of antenna required to transmit the modulated signal?
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