Adjacent Channel Interference
INTRODUCTION Like any other technology, the history of radio is one that developed over time. Radios started off being spark gap transmitters which contained radio energy over a wide range of frequencies. Eventually a range of frequencies became referred...
Family Radio (Walkie Talkie) Communications
A discussion of radio communications equipment for personal and family use
Exclusive vs. Shared Channels
The issue of exclusive channels is the most critical item in the design and implementation of advanced radio systems. From a legal standpoint, all trunking formats in use today (except for SmartTrunk and Capacity Plus) requires the use of exclusive frequencies to...
Methods of Data Transport
Different types of data require a different type of network implementation. The discussion in this article is based upon GPS data, but there are many other types of data that are sent over radio and cellular systems. Each type of data is handled best by one...
Signaling Methods for Radio Systems
Explore the evolution of radio signaling methods, from burst tones and CTCSS to advanced digital paging and remote control standards.