Here are the key points to remember from this chapter:
Antennas are omnidirectional (all over the place) or directional (a focused beam).
If your Wi-Fi access point has a connector, you can easily add an external antenna and greatly extend its range.
Access points with removable antennas use either RP-SMA or RP-TNC connectors. Determine the type used by your equipment before buying an antenna.
Omnidirectional rubber duck antennas don't cost very much, and they can add a great deal of range to your Wi-Fi network.
Directional antennas are usually used to broadcast from one point to another point; you need to think carefully about deploying directional antennas with your Wi-Fi network.
Directional antennas require a pigtail coax cable to convert from the small antenna connector on the access point to a Type-N connector.