1. Draw the 2 bit PM wave graph to send letter a (01100001) using Phase Modulation with the following symbol set. 0 Degree = 00; 90 Degree = 11; 180 Degree = 10; 270 Degree = 01;

2. Draw the 2 bit FM wave graph to send letter a (01100001) using Frequency Modulation with the following symbol set. 10 kHz = 00; 20 kHz = 11; 30 kHz = 10; 40 kHz = 01;

3. Draw the 2 bit AM wave graph to send letter a (01100001) using Amplitude Modulation with the following symbol set. 10 dB = 00; 20 dB = 11; 30 dB = 10; 40 dB = 01;

4. Draw the 2 bit AM+FM wave graph to send letter a (01100001) using Amplitude and Frequency Modulation with the following symbol set. 10 dB, 40kHz = 00; 20 dB, 30kHz = 11; 30 dB, 20kHz = 10; 40 dB, 10kHz = 01;