In US AMPS, 416 channels are allocated to various operators with 10 kHz guard band and channel between them is 30 kHz. What is the spectrum allocation given to each operator?

Correct Answer: 12.5 MHz
Spectrum allocated to each cellular operator is 12.5 MHz. As Bt = NBc + 2Bguard; which is equal to 416*30*103+2(10*103) = 12.5 MHz.