I have a project to create a free hotspot for approximately 1500 simultaneous users and would like to create it using Mikrotik but, can't find 2.4Gghz external AP to deploy using CapsMan. I don't want to use another vendor. The idea is to use about 10-20 ap (meshed) and use radius server with maybe an RB3100. Don't know if those equipment would really do the job but, at least need to start it.
You can achieve that with channel and careful parameter selection to give 'cells' of coverage which overlap ~15%. Employ client isolation and enable only 11n/ac, but don't use wireless for the 'mesh'.
The MT APs I've seen come with License 4 which won't support more the 25 concurrent users.
I disagree with this; I have had 80 users happily on an older 5GHz RB953G with second miniPCIe radio for 2GHz.