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Rca1948FrequencyModu.. - The New Jersey Antique Radio Club

Rca1948FrequencyModu.. - The New Jersey Antique Radio Club

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292 FREQUENCY MODULATION, Volume IFig. 20—Variation of a.This theory assumes an infinite bandwidth and linear phase-shiftin the receiver. <strong>The</strong> very deep and narrow dips and peaks show thepresence of harmonics of high order which are in phase at each peak.Since the receiver has a limited bandwidth, many of these harmonicswill be filtered out in the audio system, so the audio output will not beD-oo,coo~ A-o.yu = 5000~ £",-/' sec. LuU~Zn(l8(fl+Scr0°

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