The 31128 is a wideband Yagi directional antenna. It is uniquely suited for cellular applications because of its ability to provide gain across all of the cellular frequency bands. The antenna has a Type N Female connector and includes the mounting hardware.Read More
The 31128 is a high-gain, directional, Yagi antenna. Its narrow beam width requires precise aiming. This antenna is for fixed installations. It is not intended for mobile applications. For more information, refer to this full-color gain plot.
|Antenna Type||Yagi, directional, dc grounded|
|Horizontal Beam Width||70° to 90°|
|Vertical Beam Width||85° to 110°|
|Front/Back Ratio||> 20 dB|
|Maximum Power||100 W|
|Connector||Type N female|
|Temperature||-40° to +158°F|
|Wind Surface Area||< 465 cm2 (0.5 ft2)|
|Mounting||3.18 to 5.08 cm (1.25 to 2 in.) OD pipe|
|Dimensions||29.01 x 21.01 x 6.50 cm (11.42 x 8.27 x 2.56 in.)|
|Weight||1.50 kg (3.31 lb)|
This antenna is compatible with all of our radios that operate between 700 and 2700 MHz. However, the 31128 is uniquely suited for use with cellular modems. This antenna can be used with any of our cellular product offerings. A coaxial cable is required to attach the 31128 to the radio. This antenna typically attaches to a cellular modem via the 21847 12 ft cable or the COAXSMA-L. If surge protection is required, the 31128 connects via the COAXNTN-L and 31317 surge protection kit.
The antenna includes a mount/U-bolt assembly that allows the antenna to be secured to a mast, crossarm, or user-supplied pole with an outer diameter of 3.18 to 5.08 cm (1.25 to 2 in.). The antenna should be mounted with 3 feet of clearance in all directions around it. The 31128 should be positioned so that it has the most unobstructed line of sight to the cellular service provider’s strongest signal, and it should be mounted so that the weep holes are pointing down.