Which of the following is NOT a radio frequency band used in cellular networks?1.0 Marks800 MHz 1800 MHz 5 GHz2.4 GHz900 MHz

To determine which of the given options is NOT a radio frequency band used in cellular networks, we need to analyze each option.

1. 800 MHz: This is a commonly used radio frequency band in cellular networks, so it is not the correct answer.

2. 1800 MHz: This is also a commonly used radio frequency band in cellular networks, so it is not the correct answer.

3. 5 GHz: This frequency band is not typically used in cellular networks. It is commonly used for Wi-Fi networks, so it is a potential correct answer.

4. 2.4 GHz: This frequency band is commonly used for Wi-Fi networks, but it is also used in some cellular networks, so it is not the correct answer.

5. 900 MHz: This is another commonly used radio frequency band in cellular networks, so it is not the correct answer.

Based on the analysis, the correct answer is 5 GHz, as it is not a radio frequency band typically used in cellular networks.