For a television network  10×105 channels are granted. If the central frequency of the microwave link is 50 GHZ and the allotted band width for each channel is 2 KHz, how much percentage of link is used for the network ?

Allotted bandwidth for each channel = 2 KHz = 2000 Hz  No of Channels  =  10×105  Bandwidth for all channels = 2000 ×10×105 = 2×109 Hz  Frequency of microwave link = 50 GHz = 50×109 Hz  Percentage of link used = Bandwidth for all channelsFrequency of microwave link ×100                                              =2×10950×109×100=125×100=4%