High-frequency radio telephones
High-frequency radio telephones— uses radio waves to transmit information over great distances. High frequency signals radiate from an antenna using ground waves and sky waves. The ground wave can communicate over distances of up to 400 miles; the skywave can reach points up to 4000miles away, with a path reliability of over 90%.
Category: Management Information System
Previous: ← Cellular phones
More from this Section
- Investment management systems
Investment management systems refer to systems that ensure that the organization gets ... - Geographical information system (GIS)
A powerful and versatile tools that allow users to generate and process information with ... - Direct distance dialing (DDD)
Direct distance dialing (DDD) is one of easiest ways to set up a WAN that transmits voice ... - Derived information
Derived information is a function of an EIS that allows managers to find the cause or ... - Hand-held computer
Hand-held computer is a computer that is smaller than notebooks and used primarily to ...