Amateur Radio Emergency Service

Sherburne County ARES/RACES

           
Organization Title

Updated:Tuesday May 11, 2010

 

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Communications Information

 

Amateur Radio (HAM) Frequencies
Amateur Radio's origins can be traced to at least the late 1800s, but Amateur Radio, as practiced today, did not begin until the early 1900s. The first listing of amateur radio stations is contained in the First Annual Official Wireless Blue Book of the Wireless Association of America in 1909.

Citizen Band (CB) Radio Frequencies
Citizen Band, or CB Radio, has always been "radio for the people". It traditionally has afforded anyone the ability to communicate over short distances without the need for a license, as opposed to the more powerful HAM (amateur) radio which does. CB Radio has long been associated with roadway travel and many drivers, especially truckers, still depend on it.

Family Radio Service (FRS) Frequencies
Family Radio Service is one of the Citizens Band Radio Services. The Family Radio Service is an improved walkie talkie radio system authorized in the United States since 1996. This personal radio service uses distinct channels in the UHF band. It does not suffer the interference effects found on CB at 27 MHz, or the 49 MHz band also used by cordless phones, toys, and baby monitors. FRS uses frequency modulation (FM) instead of amplitude modulation (AM). Since the UHF band has different radio propagation characteristics, short range use of FRS may be more reliable than license-free radios operating in the HF CB band.

Weather Radio Frequencies
The National Oceanic and Atmospheric Administration (NOAA) broadcasts weather forecasts and alerts 24 hours a day at special frequencies most radios can't receive. There are 7 NOAA frequencies (Weather Band Radio Frequencies).

Land Mobile Radio (LMR) Frequencies
Land Mobile Radio in North America) are field radio communications systems which use portable, mobile, base station, and dispatch console radios and are sometimes based on such standards as MPT-1327, TETRA and APCO 25 which are designed for dedicated use by specific organizations. Typical examples are the radio systems used by police forces and fire departments. Key features of land mobile radio systems can include;

  • point to multi-point communications (as opposed to cell phones which are point to point communications)
  • Push-to-talk, release to listen - a single button press opens communication on a radio frequency channel
  • large coverage areas
  • closed user groups
  • use of VHF or UHF frequency bands

Military Radio Frequencies
The US Military has been utilizing radio communications since the Radio Act of 1912 was enacted.

 

Office of the Emergency Coordinator
Daniel L. Shartle, N0JHU

 
 

As a volunteer organization, Sherburne County ARES welcomes any suggestions you might have to help us serve you better.

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