How to choose a wireless internet card

Wireless Internet card refers to wireless WAN card, connected to the Wireless wide area network, such as TD-SCDMA, China Telecom CDMA2000, CDMA 1X and the WCDMA network.

It can be connected to the Internet using a Usim or SIM card anywhere it has a wireless phone signal coverage. The function and function of wireless Internet card is like a wireless modem. Its common interface type also has PCMCIA, USB, Cf/sd,e,t and so on.

Wireless Internet card is a widely used network of wireless communication networks. At present, China Unicom's WCDMA, China Mobile Edge, TD-SCDMA and Chinese telecom CDMA (1X) Four kinds of network system, so the common wireless card includes WCDMA wireless Internet card, CDMA wireless network card and Edge, TD-SCDMA Wireless card four categories.

　　The key elements of wireless internet card purchase:

First, the interface of choice: PCMCIA most suitable

Second, antenna selection: The most ideal of telescopic

Third, focus on transmission stability and thermal performance