). In an Armstrong FM generator, the crystal oscillator frequency is 200 kHz. The maximum equency deviation is limited to 75 kHz, the modulation index is 0.2. fm ranges from 50 Hz to 5 kHz and the carrier frequency at the output is 108 Mhz. Select the multiplier and mixer scillator frequencies.

). In an Armstrong FM generator, the crystal oscillator frequency is 200 kHz. The maximum equency deviation is limited to 75 kHz, the modulation index is 0.2. fm ranges from 50 Hz to 5 kHz and the carrier frequency at the output is 108 Mhz. Select the multiplier and mixer scillator frequencies.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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Concept explainers

Amplitude modulation

A radio signal can carry information in the form of sound or image for broadcasting or communication. For it to be sent to a greater distance, the signal must be changed or modulated in some way. One of the easiest way is to change the amplitude of the signal with variations of the video or the audio signal. This is called Amplitude Modulaton. In this modulation information of message is carried in amplitude of carrier signal.

Question

10. In an Armstrong FM generator, the crystal oscillator frequency is 200 kHz. The maximum
frequency deviation is limited to 75 kHz, the modulation index is 0.2. fm ranges from 50 Hz to
15 kHz and the carrier frequency at the output is 108 Mhz. Select the multiplier and mixer
oscillator frequencies.
018

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