Survey
Freezers

Figure shows an example of a distribution center (DC). The DC stores perishable items. Different areas of the DC are kept at different temperatures. Some of the areas are freezers with temperatures as low as -29 degrees C (-20 degrees F). Installing APs in areas with temperatures this low may require expensive heated enclosures to protect the APs. An alternative may be to use an antenna splitter. By using a splitter, the AP can be mounted outside the freezer with one antenna providing an area of coverage outside the freezer and the other antenna providing coverage inside the freezer. Beyond the savings of not having to buy the expensive heated enclosure, the customer does not have to pay for the extensive time it would take to install cable and power inside the freezer. Installing this type of equipment while wearing a subzero suit and heavy gloves can take a quite a bit of time and be very expensive.

Antenna Diversity
While using antenna diversity the AP uses one antenna or the other, but never both. Do not attempt to attach one antenna to each connector and place one inside the freezer and the other outside the freezer. This would not be an effective solution. In the examples of using antenna splitters shown in Figure , the diversity antenna feature might be disabled. Otherwise, two splitters and four antennas would be needed.