Figure 3-1. S/N versus C/N for frequency modulation.
LEARNING EVENT 17: BASEBAND AND BANDWIDTH CONTROLS
1. The transmitter in a typical microwave station is used to convert the baseband input from the terminal
equipment into an angle-modulated signal whose carrier frequency is in the range of 50 to 90 MHz. The
receiver is used to convert the angle-modulated signal back to the baseband signal prior to applying the signal to
the terminal equipment.
2. Both the transmitter and the receiver have the same number of operating modes. The selected mode
determines the number of VF channels that can be used, the maximum
3-13
SS0031
Previous Page
