PrimeCo Personal Communications, L.P. (later known as Chicago 20 MHz, LLC) was a joint venture of Bell Atlantic, Nynex, US West, and Vodafone AirTouch, offering wireless communication services via a 1900-Mhz CDMA network. In 1999 the wireless operations of Bell Atlantic Mobile, AirTouch Cellular, and PrimeCo Personal Communications were consolidated into a new joint venture, Verizon Wireless.