The ALPHA 40 family is a familiar 'T' bar style antenna that has been designed specifically for 4G and 3G frequencies and is in the adhesive mounting range. The ALPHA 40 has been tuned to give maximum gain at 4G (2600MHz) frequency but only slightly lower gain at 3G (2100MHz) and 2G (1700-1900MHz) frequencies. The ALPHA 40 can also be used for Bluetooth and WiFi applications with great success.
The Delta 40 direct connect 4G antenna is tuned primarily to give good performance at 2600MHz in a small package. However, a reasonable performance can be had at 3G frequencies as well. If you only need 4G/3G frequencies in a direct connect antenna then the Delta 40 is a great solution without going to the larger Delta 41.
The Oscar 40 family is a great antenna solution coverring many popular frequencies in use today. Its radome is UV proof and water proof making it a great outdoors antenna. Fitted with low loss cable as standard really makes this antenna the standard item to fit in most outdoor applications for 4G/3G/2G and WiFi.
The Tango 41 is a wide band outdoor antenna aimed at the 4G / wifi frequency but equally capable of 3G and 2G frequencies. With a small footprint of 39.8mm diameter the Tango 41 can be positioned into small places or on cabinets with curved or non flat surfaces easily. The Tango 41 has an integrated RF cable terminating in any connector you need but as standard SMA male.