Unifi transmit power auto8/23/2023 Because this is also completely free of other users, this is very commonly used. You can theoretically then also use 165 as a 20MHz channel, but I've not seen that used much but it's there. Normally a WiFi router will use 149-161 as another 80MHz channel. Then there is another block of 100MHz called U-NII-3 which are also completely free of other uses. Note there are some channels that are not used by Unifi like 50 Since this is completely free of other uses, you will find lots of folks using these channels. There's a complicated map of bonding since the channels have to be adjacent. Each channel is 20MHz, so if you want maximum performance and you don't have lots of interference, you can bond them into a single 80MHz channel or into 40Mhz. The U-NII-1 also known as the low band and originally had a 50mW power limitation, but in 2014, they were allowed for outdoor and can go to 1 watt. In a normal 5GHz channel, the low bands 36, 40, 44, and 48 are called UNII-1 which stands for Unlicensed National Information Infrastructure and were originally designed for indoor use. In the old days, they could be used, but the power was turned down significantly, but now you can use them, particularly in areas without FAA weather radar. These are channels that are shared with legacy FAA weather radars. For years now I've avoiding used DFS channels on 5 GHz. One point of relief is that there are some more channels (actually quite a few, like four more 80 MHz channels), but they come with Dynamic Frequency Selection (DFS) restrictions. The problem is that there are only two 80 MHz channels at traditional 5GHz. Remember that WiFi rates are half-duplex (you can either transmit or receive but not both), so that 800-1.2Mbps per client translates into 400-600Mbps in Ethernet full-duplex. But pretty soon, if you want to really haul ass with your 1Gbp full-duplex (that is you can transmit and receive simultaneously) Comcast broadband, it's nice to have 800-1.2Mbps on the WiFi side. And when 5 GHz opened up, it seemed like a bonanza although the range was really low. The 2.4 GHz band, the ISM band (Industrial, Scientific and Medical), is super crowded with only three non-overlapping 20MHz channels at 1, 6, and 11. There are very few WiFi channels and most are congested, so the quest goes on for more spectrum and channels to avoid everyone else WiFi Access points.
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |