An AM transmitter has its maximum modulate frequency limited to 7 kHz. Assume th

Question

An AM transmitter has its maximum modulate frequency limited to 7 kHz. Assume this transmitter is operated as part of communications band and is assigned a communications channel along with many parallel communications channels. What would you take as the minimum width of the communication channel? Explain An AM transmitter has its maximum modulate frequency limited to 7 kHz. Assume this transmitter is operated as part of communications band and is assigned a communications channel along with many parallel communications channels. What would you take as the minimum width of the communication channel? Explain

Explanation / Answer

The channels need to be about 20 kHz apart to minimize cross talk on most receivers as 15 kHz is occupied by the radiated signal, and most receivers only attenuate a few db, 9 kilohertz from the carrier. Worse over modulation produces spurious signals up to 14 kilohertz from the carrier frequency. Intermodulation distortion in most receivers produces sum and difference false signals

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