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| Wireless communication eliminates the need for phone cords, and makes it possible to call or receive calls anywhere. |
 shockwave |
| Wireless Telephone Bands |
| Type | Frequency | Use |
|---|---|---|
| Microwave | 3-30GHz | Telephone relay, communications satellites, radar, satellite broadcasting |
| UHF (Ultra-high frequency) |
300-3,000MHz | Telephone relay, portable phones, car phones, TV broadcasting |
| VHF (Very high frequency) |
30-300 MHz | Cordless phones, marine telephones, portable pagers, taxi radios |
| Short wave | 3-30 MHz | International radio broadcasting |
| Medium wave | 300-3,000 KHz | Radio broadcasting |
| Long wave | 30-300KHz | Marine radio |
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