Question: 4. Three FDM multiplexers are connected as shown below. The inputs to the top first-stage multiplexor each have a bandwidth of 30 KHz. The

4. Three FDM multiplexers are connected as shown below. The inputs to the top first-stage multiplexor each have a bandwidth of 30 KHz. The inputs to the bottom first-stage multiplexor each have a bandwidth of 40 KHz. What is the minimum bandwidth of the output from the second-stage multiplexer? Assume a 2 KHz guard band between all channels. (hint slide 18)
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