If your reader is an XWR or XR then your reader has an in-built internal 900MHz antenna to enable peer-to-peer communications between your reader(s) and your computer. Wireless communication also requires a 900MHz USB Radio to be plugged into your computer.
Communication is at 115200 baud. The internal 900MHz antenna provides short range coverage. To extend coverage connect a 900MHz Antenna Connector or any make of high gain antenna to the Antenna connection on your reader.
To learn more about how to connect to your reader using radio and when you would use radio refer to “Streaming Live data from the reader”.