The Echo 40 antenna is a good wide-band antenna, covering 2G/3G/4G and WIMAX 2.5GHz, for reliable IoT and network provision with relativiely high speed (10Mbit/s) / moderate distance (6 miles) WiMAX implementation.
Ideal for office to office links and remote to base station links. Although not within the stated frequency spectrum the antenna also picks up the 2400MHz WiFi band.
The Echo 40 is an unusual PIFA type embedded antenna that is preferably mounted on to a PCB where it can be soldered to a ground plane (150 x 145mm) with its two small lugs. The stated performance is gained with a metal ground plane attached to the lugs which can be a thin metal plate.