3G modems with external antenna

External antenna

— the presence of an external antenna in the design or delivery set of the modem. Most often, the first option is encountered, when the antenna is a folding non-removable part, which is opened to its full length only directly during operation; but antennas can also be found in the form of separate equipment, connected if necessary. This feature has a positive effect on the reliability and range of communication, therefore, for work in places with a weak signal level, it is recommended to use models with an antenna.