The first local oscillator of a spectrum analyser usually covers a fre – McqOptions

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1.	The first local oscillator of a spectrum analyser usually covers a frequency range of less than an octave is easily tuned with which of the following
A.	Low-pass filter
B.	Varactor diode
C.	Light Emitting diode
D.	Zener diode
Answer» C. Light Emitting diode

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