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MikroTik provides routers with interfaces in 3 frequency bands - 2.4GHz, 5GHz, and 60GHz. Each frequency band has its own advantages and use cases.
2.4GHz
- Nowadays considered legacy because of overuse, it is still the most widely supported band. If you have a wireless client like phone, laptop or another device, it will most probably support this band. Even IoT devices often support 2.4GHz band. Because of the lower frequency, the 2.4GHz band can better overcome obstacles, so sequentially it has a bigger range than a 5GHz device, but it also usually has smaller throughput (internet speed). Also, it can severely suffer from interference (noise) from other 2.4GHz wireless devices, because almost every home access point supports 2.4GHz band and it performs well through walls and over large distances also, there are fewer frequencies to choose from (3 non-overlapping). If you have many close neighbors (apartments, shared office building) chances are 2.4GHz band will be saturated and performance will be lower. This band can also be used for industrial links.
5GHz
- Usually, new phones and laptops also support 5GHz band. If your client device and router support 802.11ac (sometimes referred to as just "ac") it will be faster than the 2.4GHz band. 5GHz band has more frequencies to choose from, but also usually has a lower range than 2.4GHz band. If you have new client devices, your network will benefit from an ac router. The 5GHz band is also often used for industrial links, because of the big frequency range.
60GHz
- Currently, there are very few client devices (phones, laptops) that support the 60GHz band. However, it offers cutting edge solutions for industrial links. For example, if you have 2 points that must be connected at distances up to 1500 meters you will get a 1 Gbps duplex link. For example, one of the MikroTik products is called the Wireless Wire because it provides the same speed as 1Gbps wired connection, but you will need a clear line of sight to establish the link.
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