Solution:

Unfortunately we do not sell a high gain antenna for the LTE Cellular device. Suggestion for a 3rd party is http://www.wpsantennas.com/ The frequencies band that may be available in your area are shown below: Frequency bands LTE: 700 MHz, AWS WCDMA: 800, 850, 1900, 2100 MHz GSM: 850, 900, 1800, 1900 MHz CDMA: 850, 1900 MHZ You can ask for an antenna that supports all these frequencies or if you know that the area you are installing the Cellular device at has LTE coverage (700 MHz, AWS) then you can get an antenna just specifically for those frequencies.