Hi
I just bought Mikrotik HAP AC2 router. Everything is working well except wifi. I live in a house. The router is located downstairs and I’ve got pretty good wifi(2.4 and 5) signal there. The problems start upstairs. In the room located just above the router wifi working well but in next room upstairs it dropping down dramatically. To be honest I am not able to use 5GHz wifi due to poor signal and disconnecting any devices connected to it. 2.4GHz works quite well but still far away to be brilliant. When i connected my old router which i get from ISP - all of the problems despaired. Works great on configuration “out the box”. Got a perfect 5ghz singal everywhere inside and even outside the house. Why does Mikrotik has got such crap wifi? I attached a screenshot of my WLAN config maybe someone will be able to sort this problem out. 
The antennas are a physics thing, not a manufacturer thing. I would try a router that has bigger antennas, like for example the RB4011iGS+5HacQ2HnD-IN. That would improve very much the signal strength.
so Mikrotik solution is to buy 5 times more expensive router? nice one… if i knew it that hap ac2 is so pice of shit I wouldn’t buy that crap - that my personal opinion. That’s not a home router thats room router.
Calm down, MikroTik’s Wi-Fi isn’t their edge but still usable, 1st if all may I know what’s the current tx power running on 5GHz AP? U can find it on wireless-interface-status page. And how do u place the router? Since it’s internal antennas design so position is matter, not much impact but still useful if u wanna maximize Wi-Fi coverage.
hAP ac2 is an excellent tiny router with built in antennas. If you have a large house, there are other devices that you could have chosen instead. Any other brand “gaming router” with external antennas will cost more than the suggested RB4011, which for the port count and power is reasonably priced.
Calm down, MikroTik’s Wi-Fi isn’t their edge but still usable, 1st if all may I know what’s the current tx power running on 5GHz AP? U can find it on wireless-interface-status page. And how do u place the router? Since it’s internal antennas design so position is matter, not much impact but still useful if u wanna maximize Wi-Fi coverage.
Ive got standard 3bed house so is not a big. The router is located in the living room almost in the middle of the wall.
One thing that might explain the difference between hAP ac2 and the old wireless router is adherence to country regulations … all wifi vendors are forced to do it since a year or two ago … previously this was not really enforced. In “worst case” the difference might be as high as 10dB … or a brick&mortar wall. So absolutely do verify actual Tx power (it should be under Current Tx power" tab) to see if this is the issue.
Also antenna gain on previous versions of firmware was set to zero and one had to manually insert values like +2.
I believe now the actual antenna gain is accurately reflected for the model being used in the latest software versions.
Not that accurately. My home mAP lite has 1.5 dBi antenna, according to specifications. But the lowest gain I can set is 2. They stole half dBi from me! 
So when your rotund noggin comes in between the router and the wifi device, the signal drops off dramatically??
This is where the plot thickens, the Hap AC2’s dont show power
This is where the plot thickens, the Hap AC2’s dont show power
Maybe the interface is disabled?
Also HAP AC is indeed a very goord product…i ve used it a lot in many wireless projects with very good results…
hAP ac is quite unrelated product … better wireless (tripple chain on both bands), SFP port and worse routing (single core MIPSBE CPU).
Indeed 
In console it shows all zeroes for current Tx power … One of beauties of wireless on ARM …
mkx check out TX power rates with manual setting. It I believe shows what the default settings are!
It’s not just ARM, that is true for all 5Ghz radios in 802.11ac devices.
Your wifi signal might improve if you use the device in vertical orientation, it’s always worth a try.
Your approach to WiFi is wrong.
Mikrotik wifi is not good compared to competition’s.
Hap AC2 has builtin antenna will not peovide good coverage upstaris - it does not matter which manufacturer is making it.
Next you are using 5GHz - it penetrates less (compared to 2,4GHz).
If you want good WiFi coverage the solution is not to get one big access point, but to use multiple smaller units.
I’d spent countless of hour to tune my hAP AC2 + cAP AC, here’s my experience with hAP AC2:
This is the internal pic of hAP AC2, pay attention of the antennas position, adjust the placement of the router accordingly. If you wanna cover the 1st floor, try to place it as high as possible, and take the walls on 1st floor into account, minimize the amount of wall by adjusting placement of the router on ground floor (Normally ground flood has lesser wall, I will put it in the position right under the wall of 1st floor to cover both side, I hope you can understand what I say)
Also, it runs best with channel 36~48, any higher channels will shorten the coverage of it.
Use CAPsMAN to create a same SSID of 2.4G and 5G, let your device to choose them automatically, newer devices are smart enough to make the choice, even though may not immediately, my experience is iPhones will switch to 2.4G without any noticeable lag, and take about a minute or less to jump back to 5G if the signal is strong enough, without any noticeable lag too.
You don’t need 5G to cover all rooms, really. Just focus on those space you will spend you time most, be piratical.
This model is designed to be an Access Point or a router etc for a small office or a house…
I do not understand why will someone try to cover a whole house with 1, 2 , 3 floors ( i do not know how many) with just a small AP…
It won’t work as expected… as simple as that… Because it is not designed for something like that…
@heidarren, RF signals behave in many ways.. they can be reflected (signal bounce in another direction), reffracted ( signal passes through an object), diffracted (signal “hugs” an object), or scattered ( signal reflected to multiple dirrection) according to the surface or material they find on their way (in simple words)… Its not that simple :
minimize the amount of wall by adjusting placement of the router on ground floor
What i would do is get as many haps as needed and create wireless links using the 5GHz band and that way expand the network inside my house… The position of each hap should be carefully selected. This will give you better coverage, speed, bandwidth and in general better wireless quality…