So hardcoding antenna gain for “permanently attached” antennae is the correct way of doing it,
Actually the “minimum antenna gain” is hard coded when regulatory domain is used for built-in antenna. So hiding this from the GUI was not really needed to be compliant. with RF certification.
But it is/was very confusing for novice users that setting the antenna gain was not altering the antenna gain, as intuitively expected from the wording, but telling RouterOS to take that amount of antenna gain into account.
Short wording is difficult, but should express something like: “TX Power reduction compensating for antenna gain”.
Still the need to give a higher number to further reduce the transmit power can be contra-intuitive, and that minimum should be visible somewhere then.
I hope they find a way out of this. I’m not the only one who holds all his AP functioning devices in the 6.45.x version. They all have specific antenna-gain setting by tuning iterations.
It’s becoming an old story. http://forum.mikrotik.com/t/v6-47beta-testing-is-released/135326/1
And I’m still uncertain about the actual transmit power used: http://forum.mikrotik.com/t/v6-47beta-testing-is-released/135326/1 when using other settings.