@Krygma I think this shold work for you, this is dual band ant. for unifi ap ac mesh accesspoint, prety mutch same as eap225-outdoor. https://www.ui.com/unifi/unifi-mesh-antenna/

@GPB You can use tagged vlan1 but then you have to configure vlan settings on ssid to vlan 1

@GPB I have a untagget(Deafult vlan) 300 wher i have a lott of Iot Devices and access point on the same vlan. and on that ssid I have to remove vlan settings on ssid, when i remove vlan settings I...

@GPB Do you have any vlan? I have a untaged vlan wher I have accesspoint and I have to remove vlan settings on ssid on that vlan after update. you can't longer use vlan settings on ssid with untagged...

@piterus New firmware yesterday with dfs support :-) Download it from the controller, not aviable on tp-link web yet. New firmware is 2.3.0 Build 20190731 Rel. 51932

@Waga Try to disable vlan on ssid with untagged vlan.