![](/images/new-backgrounds/1295314/295314117x1.webp)
Glossary
This glossary contains an alphabetical listing of terms and their definitions that are applicable to portable and mobile subscriber radio products. All terms do not necessarily apply to all radios, and some terms are merely generic in nature.
| Term | Definition |
|
|
|
|
|
| Analog | Refers to a continuously variable signal or a circuit or device designed to | |
|
| handle such signals. | |
| Band | Frequencies allowed for a specific purpose. | |
| CPS | Customer Programming Software: Software with a graphical user interface | |
|
| containing the feature set of a radio. | |
| Default | A | |
| Digital | Refers to data that is stored or transmitted as a sequence of discrete symbols | |
|
| from a finite set; most commonly this means binary data represented using | |
|
| electronic or electromagnetic signals. | |
| DPL | Digital | |
|
| as well as memory channel and busy channel lock out to enhance | |
|
| communication efficiency. | |
| FCC | Federal Communications Commission. | |
| Frequency | Number of times a complete | |
|
| of time (usually one second). | |
| GPIO | ||
| IC | Integrated Circuit: An assembly of interconnected components on a small | |
|
| semiconductor chip, usually made of silicon. One chip can contain millions of | |
|
| microscopic components and perform many functions. | |
| IF | Intermediate Frequency. | |
| kHz | kilohertz: One thousand cycles per second. Used especially as a radio- | |
|
| frequency unit. | |
| LCD | ||
|
| ||
|
| liquid causes the crystals to align so that light cannot pass through them. | |
| LED | Light Emitting Diode: An electronic device that lights up when electricity is | |
|
| passed through it. | |
| MDC | Motorola Digital Communications. | |
| MHz | Megahertz: One million cycles per second. Used especially as a radio- | |
|
| frequency unit. | |
| Paging | ||
|
|
|
|