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R

R.F. or Radio Frequency

Radio Frequencies are electromagnetic waves sent on a particular frequency. An individual frequency is how tightly spaced the waves are measured in Hz (Hertz) or waves per second. 1900MHz is 1900 million waves per second, aka 1.9 billion waves per second.
RF technologies are in the news a lot for its potential danger to human health. However one must keep in mind that "We live in a sea of waves", everything around us gives off electromagnetic radiation, computers, toasters, microwave ovens, even the Sun. However only ionizing radiation (waves so powerful they can destabilize the molecular structure of a substance by knocking an electron free, creating an ion) are harmful to humans. Cell phones and computer networks emit a very tiny amount of non ionizing type radiation, and are therefore harmless to humans.

Author Name: IronHelix

Roaming

The ability to use a cellular phone outside of your cellular or PCS company's service area.

 

RD Glossary by Run Digital