Which bandwidth does CDPD utilize for data transfer?

CDPD, or Cellular Digital Packet Data, utilizes the bandwidth of 800 to 900 MHz for data transfer. This specific frequency range is designated for use in wireless communications, particularly in relation to cellular technology. The use of these frequencies allows CDPD to effectively transmit digital data over existing cellular networks, which were originally designed for voice communication.

By operating within this range, CDPD can optimize its data transmission capabilities while leveraging the infrastructure established for analog and digital cellular systems. This was particularly advantageous during the early development of mobile data services, facilitating the growth of mobile internet and data applications.

The other frequency ranges presented are not used by CDPD, as they fall outside the specifications for this technology. This highlights the importance of knowing bandwidth allocations in the context of mobile data services and how they impact communication technology development and implementation.