The Yagi Cellular Antenna is collect the cell tower signal and send it through the cable to an amplifi er or directly to the cell phone or cellular data card. When the cell phone or cellular data card transmits, the signal is transferred to an amplifi er or directly to the antenna and broadcast back to the cell tower. Manufacturer: Wilson Electronics, Inc Manufacturer Part Number: 301129 Manufacturer Website Address: Brand Name: Wilson Product Name: Yagi Cellular Antenna Product Type: Cell Phone Antenna Application/Usage: Cell Phone Frequency: 800 MHz to 900 MHz Gain: 10 dBi - 900 MHz Impedance: 50 Ohm Connectors: N-type Female Package Contents: Yagi Cellular Antenna 1 x U-Bolt 1 x Pipe Bracket 2 x 1/4" Split-Lock Washers 2 x 1/4"-20 Nuts Standard Warranty: 90