Wi-Fi devices are manufactured to meet certain standards. The letters after 802.11 tell you which protocol and your device is compatible with. The protocol tells you the frequency, theoretical speed and approximate range of a device. Keep in mind, the Internet speed you subscribed to plays a huge part in the speeds you will experience.
||Real World Distance
|802.11a||5Ghz||390 ft||195 ft
|802.11b||2.4Ghz||460 ft||230 ft
||125 ft||62 ft
|802.11n||5Ghz||460 ft||230 ft|
|802.11ac||5Ghz||up to 820 ft (amplified)
||up to 410 ft (amplified)
Both 2.4GHz and 5GHz each have pro's and con's. Check out the list below to help make the best decision for your environment.
||Real World Speed|
|802.11a||5Ghz||6-54 Mbps||3 - 32 Mbps|
|802.11b||2.4Ghz||11 Mbps||2-3 Mbps|
|802.11g||2.4Ghz||54 Mbps||10 -29 Mbps
|802.11n||2.4Ghz||300 Mpbs||150 Mbps|
|802.11ac||5Ghz||433 Mbps - 1.7 Gbps
||210 Mbps - 1 G|
Whether you choose 2.4Ghz or 5Ghz, you need to make sure your modem/router and device (covered below) are using the same frequency. After you read this article, you will have a better idea which frequency works best for your situation.