Why do we need modulation and demodulation?

Related questions

1. Why do we use QAM?
2. What is PSK modulation and demodulation?
3. What is modulation and demodulation?
4. What is Oqpsk modulation?
5. What is the principle of modulation?
6. What is the difference between shift keying and modulation?
7. What is the advantage of QAM over ASK or PSK?
8. What is called modulation?
9. Where is PSK modulation used?
10. How does QAM modulation work?

Tags

1. #antenna
2. #allow
3. #modulate
4. #smaller
5. #range
6. #single
7. #signal
8. #transmit
9. #using
10. #multiple
11. #ranges
12. #frequency
13. #simultaneously
14. #modulation
15. #allows
16. #different
17. #reason
18. #bandpass
19. #every
20. #signals
21. #channel
22. #another