How to Find RSSI and Noise on Mac, Windows, Android? 1. You can calculate this value by subtracting the value of Noise from RSSI.įor instance, if a channel has RSSI of -39 and Noise is -86, then SNR is (-39) – (-86) = -39 +86 = 47. The higher this ratio, the better the WiFi connection is. Think of it like the channel having a Noise value furthest from zero is better.Ĭombining these values gives you the SNR, that is, the Signal to Noise Ratio. If Channel A has Noise -95 and Channel B has -88, then A is better. You can remember the thumb rule that the RSSI value should be closer to zero.īut for Noise, the reverse is true. So, for instance, if Channel A has RSSI -45 and Channel B has RSSI -60, Channel A is better, because this number is higher. But for both of these numbers, you have to remember that the value is negative. On the other hand, the Noise value should have a low number. Which brings me to my next point, how to find which one is suitable for you? How to Find the Best WiFi Channel at your Place?įor RSSI, you need to remember that you have to check the highest number, that is, the higher the value for RSSI, the better the performance. These apps can also show you how many devices are on a particular channel and they’ll also give you a rating for every one of them, so you can pick the best one for you. This way you can get the best performance out of your wireless connection. These apps check for channel congestion in your vicinity and the best channel for you. To handle this, you can use various types of WiFi analyzer apps on the internet. This may lead to congestion because of which there might be a drop-in the WiFi performance. Since it is clear that the UNII-1 band is highly suitable for WiFi, almost all the devices at your home will be connected to the internet via this band. The only solution for this is to make sure that your router is placed far from any smart devices like smart home appliances and smart bulbs.Īnother issue worth keeping in mind is congestion. Therefore, you might experience some interference between your router and these devices. One more thing that you should keep in mind is that the regular smart devices as well as the smart home appliances also use the UNII-1 channel for communication. Note: Higher channels are recommended because you will find less interference. The recommended 5GHz channels for home usage are UNII-1 (36 40 44 and 48) and you can go farther up and select the higher ones if your router has DFS and TPC. The Best 5GHz Channels For WiFi at Home, Office, Business Place
It is not recommended to use this channel, even if you have a device that supports it. It is used for military stations and any type of sensitive communication. DSRC stands for Dedicated Short Range Communications and the 165 is the lowest channel which is a part of this band. This is the highest region and it is also known as DSRC or ITS. Besides, DFS and TPC are needed to enable your device to use them. This is because these are all higher channels, which means that they will have a wider bandwidth and better communication. This band is also known as the ISM range because it overlaps with the frequencies that are specifically designated for Industrial, Scientific, and Medical purposes. UNII-3 Īlso known as the UNII upper range, this band features channels 149, 153, 157, 161. DFS allows the router to automatically select the best channel without creating any overlap with the weather and military stations or any radars. Your router must have the DFS and TPC enabled to use the channels from this band.ĭFS stands for Dynamic Frequency Selection and TOC stands for Transmit Power Control. They cannot be used by just about any device. This band consists of 4 channels as well – 52, 56, 60 and 64. This is also why there’s very high interference, but unless your router supports DFC/TPC, you’ll end up using this band. They are the lowest available channels at 5GHz frequency band and the majority of your home devices run on them. The first 4 wireless channels, that is, 36, 40, 44 and 48 are known as UNII-1 channels and they are generally used for domestic purposes. Let’s see what the purpose of each of these bands is: UNII-1 UNII stands for Unlicensed National Information Infrastructure. These bands are known as UNII-1, UNII-2, UNII-3, and UNII-4. The channels are further segregated into different bands and each band serves a different purpose.