Webopedia on Google+Webopedia on TwitterWebopedia on FacebookTech Bytes Blog
Main » TERM » R »

RF - radio frequency

Short for radio frequency, RF is any frequency within the electromagnetic spectrum associated with radio wave propagation. When an RF current is supplied to an antenna, an electromagnetic field is created that then is able to propagate through space. Many wireless technologies are based on RF field propagation.

These frequencies make up part of the electromagnetic radiation spectrum:

  • Ultra-low frequency (ULF) -- 0-3 Hz
  • Extremely low frequency (ELF) -- 3 Hz - 3 kHz
  • Very low frequency (VLF) -- 3kHz - 30 kHz
  • Low frequency (LF) -- 30 kHz - 300 kHz
  • Medium frequency (MF) -- 300 kHz - 3 MHz
  • High frequency (HF) -- 3MHz - 30 MHz
  • Very high frequency (VHF) -- 30 MHz - 300 MHz
  • Ultra-high frequency (UHF)-- 300MHz - 3 GHz
  • Super high frequency (SHF) -- 3GHz - 30 GHz
  • Extremely high frequency (EHF) -- 30GHz - 300 GHz

Radio frequency is also abbreviated as rf or r.f..







TECH RESOURCES FROM OUR PARTNERS
DID YOU KNOW?
The Five Generations of Computers

Learn about each of the five generations of computers and major technology developments that have led to the current devices that we use today. Read More »

Small Business Marketing's Greatest Hits

The following compilation of small business marketing tips highlights some of the expert advice published over at Small Business Computing. Read More »

13 Best Free Android Apps

From secure messaging to document editing, our top free must-have apps have been rated, reviewed and named the best free Android apps of 2015. Read More »

QUICK REFERENCE
5 Best Cloud Storage Services

With cost and security in mind, we look at five cloud storage options that will suit the needs of most home and SMB owners. Read More »

Windows 10 Tips for Desktop PC

Five basic tips to help you customize Windows 10 on your desktop PC. Read More »

29 Free Android Apps for Cash-Strapped Students

From wacky alarm clocks to lecture hall tools and after class entertainment, these Android apps are a good fit for a student's life and budget. Read More »