Figure 3-1: Signal and propagation Transmitted Received Signal Signal (Attenuated& Distorted) Propagation Transmission medium Sender Receiver A signal is a disturbance in the media that propagates( travels) down the transmission medium to the receiver If propagation effects are too large, the receiver will not be able to read the received signal 33 Figure 3-1: Signal and Propagation Sender Receiver Transmission Medium Propagation Transmitted Signal Received Signal (Attenuated & Distorted) A signal is a disturbance in the media that propagates (travels) down the transmission medium to the receiver If propagation effects are too large, the receiver will not be able to read the received signal