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Differences in 2.4G/5G WiFi IPC Dual Band WiFi

Time:2024-01-12 Source:Kepoint Click:

  2.4G is the most common communication frequency band, with a working frequency range of 2400-2483.5MHz and working channels of 1-14. It has a small bandwidth and few channels, and many devices run on this channel. In addition to wireless routers, the 2.4G working frequency band is also used in Bluetooth, cordless phones, RFID, wireless data transmission, microwave ovens, and many medical RF devices, so this frequency band is very crowded and susceptible to interference; The operating frequency range of 5G is 5150MHz-5825MHz, with operating channels ranging from 36 to 165, wider bandwidth, more available channels, and faster transmission rates without congestion. At present, dual band WiFi is becoming increasingly widely used, and as home routers gradually come standard with dual band, dual band WiFi IPC products will be the mainstream.

Comparison between 2.4GHz and 5GHz
Frequency band 2.4G 5G
Operating Frequency Lower Higher
Working wavelength Longer Lower
Propagation attenuation Smaller Larger
Coverage distance further Closer
Wall penetrating ability Stronger Weaker
Channel congestion Very crowded Not crowded
Interference level serious Not serious
Connection rate Lower high
Compatibility (Smart Home) preferably Poor

  So is 2.4G/5G dual band the same? No, there are wireless standards operating in the 5GHz frequency band, including 802.11n and 802.11ac/ax. The two standards have significantly different wireless speeds, as shown in the table below:

wireless standards frequency band Wireless rate
802.11a 5GHz 54Mbps
802.11b 2.4GHz 11Mbps
802.11g 2.4GHz 54Mbps
802.11n 2.4GHz/5GHz Up to800Mbps
802.11ac 5GHz Up to6.93Gbps
802.11ax 2.4GHz/5GHz Up to9.6Gbps

  Although it cannot be said that dual frequency using the 802.11n WiFi standard is fake dual frequency, there is indeed a significant difference in speed between dual frequency WiFi under the 802.11n and 802.11ac/ax standards, both referring to "dual frequency WiFi" because there are performance differences, so it is still necessary to distinguish when choosing.

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