Why…Fi? — How Wireless Networks Work
Understanding Waves, Signals, and Wireless Communication
Types of Wireless Networks
| Bluetooth | Short‑range personal connections | 2.4 GHz ISM band |
| Wi‑Fi | Local area networking | 2.4 GHz, 5 GHz, 6 GHz |
| Cellular | Wide‑area mobile communication | 700 MHz – 2.6 GHz |
| Satellite | Global coverage | 2 GHz, 12 GHz, 20–30 GHz |