Davis Yagi Antenna f/Long Range Repeater 
Yagi Antenna for Long-Range Repeater
Use with Long-Range Repeater (Davis 7654) to extend range up to 5,000' in one direction. Each repeater requires two antennas. You can combine one Omni and one Yagi antenna to collect data from all directions and transmit in a single direction, or vice versa.
Includes mounting hardware.
FCC regulations require that U.S. customers select either the Omni Antenna (#7656) or the Yagi Antenna (#7660); customer outside the U.S. must purchase third-party antennas in compliance with local regulations
Quick Guide (pdf)
Owner's Manual (pdf)