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AirCard 400

The AirCard® 400 for Ricochet networks operates as an “Always On” wireless network interface card (NIC), not just as a dial-up modem, to provide Ricochet subscribers with reliable high-speed access to mail, data, corporate applications and the Internet. The AirCard® 400 for Ricochet can be used with laptops, Internet appliances and Pocket PCs with a PCMCIA Type II slot. It allows users to connect to a corporate network or the Internet wirelessly and without the need for a cellular phone. The AirCard® 400 for Ricochet works at speeds up to 128 Kbps.

Note: Ricochet Networks was one of the pioneering wireless Internet service providers in the United States, before the advent of widespread Wi-Fi, 3G, and broadband services were available to the general public. After struggling for about eight years in competition with the wireless data services carried over the cellular telephone networks, in March 2008, the Ricochet service ceased to exist.


  • Speed & mobility – 128 kbps network
  • Ease of use – works like a LAN and not a modem
  • True type II card – no extensions
  • Low power consumption
  • Advanced antenna design for enhanced radio sensitivity
  • Support mobile devices running Windows, 95, 98, NT, 2000, ME and Pocket PC

Contributions to the product:

Written Specifications and ProceduresEmbedded Software Design
Hardware requirements and system I/O mapping
Functional specification
Firmware design documents
Host interface design notes
Code DevelopmentTesting & Debugging
Board start-up and boot-loader
Flash programming support
Host interface protocol (data link layer) for PCMCIA
AT command interpreter extensions
Firmware "over-the-air" upgrade tools
Firmware debug support
Exception/error handler
Host interface test and debugging utilities
Performance analysis tools