May
16th

Type of Communication

During the 1st week at Motorola, I need to hv some basic study again which related to this field. When I come across this topic “type of communication” just recall back on my academic study on “Communication Network“, almost the same, just that here, I can get know more detail which does not include in my study.

Radio systems use any of three types of communication: simplex, semi-duplex, and full-duplex. The communication type used depends on the number of users and the type of equipment available. This section provides a description of the three types of communication.

Simplex Communication
The most basic type of radio communication is simplex. Simplex communication consists of radio units operating on a single frequency. Because everyone transmits and receives on the same frequency, users cannot talk and listen at the same time. Simplex means transmission in one direction at a time.

simplex

A simplex radio system works well when there are only a few users who are closely located. When additional users are added to the system, the competition for the one available frequency can make it difficult to get a message across. In addition, great distances and natural obstacles such as high hills and tall buildings can interfere with the single frequency.

Do you know: Television Channel and Radio Channel (FM or AM) are (more…)