We have a few sites that contain wall-mounted AP224 w/ ANT-1W. These APs are mounted 12-15 feet high, and the antennas are in a "W" type pattern with all antennas running parralel to the wall. For the most part, we're using these AP224s on the first floor of multistory buildings where architectural design made it impossible to mount AP225s (read: no ceiling tiles or beams to affix anything to). The floors above contain ceiling tiles and as such we have AP225s installed where necessary.
Recently I attended a meeting in one of these buildings and noticed a lackluster wireless signal, despite being ~20 feet away from an AP224 with clean LOS. Looking at the controller I saw I was associated with an AP225 installed on the floor above me. There were, in fact, only a handful of devices associated with the AP224 in the room despite there being ~40 or so people present with wireless devices.
Is my antenna installation correct? I have seen everything from a \ | / orientation running parralel to the wall (what we're currently using), to the same orientation with the 1 & 3 antenna being angled away from the wall at 45 degrees, to the antennas being completely vertical | | |.
The antennas show 2.4G/4DB & 5G/6DB in their description and were provisioned as such in the controllers. Are these values correct?
Is 12-15 feet too high for these APs to be mounted?
Any other tips for optimizing wall-mounted AP placements?