The purpose of the PacComm packet controller is to act as an interface between ordinary voice radios, such as VHF or UHF FM transceivers for some models, a HF transceiver, and a computer. The packet controller will establish error-free radio communications between your computer and another packet radio equipped station. You will be able to have a "private channel" while sharing a frequency with other packet stations, operate a remote computer "bulletin board" or "electronic mail" stations, send messages, in short, to enjoy all the advantages of digital communication via your radio system.