Browse Definitions:
Definition

Citizen's Band Radio (CB)

Compare with amateur radio .

The Citizen's Band (CB) Radio Service, also known simply as CB, is a public, two-way personal radio service. There are several classifications of CB operation. The best-known form of CB is voice communications that became a fad in the 1970s. Mobile CB operation, especially in cars and trucks, remains popular. To a lesser extent, "CB'ers" engage in fixed operation from homes, and in portable communications using handheld transceivers.

Most CB operation takes place within a narrow band of frequencies near 27 MHz. There are 40 channels in this band. These channels are overcrowded. Congestion is worst during peaks in the 11-year sunspot cycle when the 27-MHz band supports worldwide communication known as "skip." Sunspot cycle peaks occurred in 1967-69, 1978-80, 1989-91, and 2000-2002. During the long intervals between these peaks, the normal range of operation on the 27-MHz band is rarely more than 20 miles.

Some CB operators illegally modify their equipment, or obtain illegally modified equipment, capable of higher transmitter output power and greater frequency coverage than is allowed by Federal Communications Commission (FCC) regulations. These operators use their equipment in an attempt to communicate over long distances, and/or to compete with other users of the service.� This is called freebanding or bootlegging.

The CB Radio Service has proven useful in disaster situations, both small-scale (for example, for a stranded motorist) and large-scale (such as after a hurricane or during a flash flood). An organization of expert communicators known as the Radio Emergency Associated Communications Teams (REACT) provides communications support in emergency situations. Channel 9 (at 27.065 MHz) is monitored by members of REACT, and is recognized as the CB emergency channel in the United States.

This was last updated in June 2011

Continue Reading About Citizen's Band Radio (CB)

Start the conversation

Send me notifications when other members comment.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

SearchSecurity

  • password

    A password is an unspaced sequence of characters used to determine that a computer user requesting access to a computer system is...

  • adware

    Adware is any software application in which advertising banners are displayed while a program is running.

  • botnet

    A botnet is a collection of internet-connected devices, which may include PCs, servers, mobile devices and internet of things ...

SearchHealthIT

SearchDisasterRecovery

  • call tree

    A call tree -- sometimes referred to as a phone tree -- is a telecommunications chain for notifying specific individuals of an ...

  • mass notification system (MNS)

    A mass notification system is a platform that sends one-way messages to inform employees and the public of an emergency.

  • disaster recovery as a service (DRaaS)

    One approach to a strong disaster recovery plan is DRaaS, where companies offload data replication and restoration ...

SearchStorage

  • data migration

    Data migration is the process of transferring data between data storage systems, data formats or computer systems.

  • compact disc (CD)

    A compact disc is a portable storage medium that can be used for recording, storing and playing back audio, video and other data ...

  • secondary storage

    Secondary storage is used to protect inactive data written from a primary storage array to a nonvolatile tier of disk, flash or ...

SearchSolidStateStorage

  • SSD RAID (solid-state drive RAID)

    SSD RAID (solid-state drive RAID) is a methodology commonly used to protect data by distributing redundant data blocks across ...

  • Tier 0

    Tier 0 (tier zero) is a level of data storage that is faster, and perhaps more expensive, than any other level in the storage ...

  • PCIe SSD (PCIe solid-state drive)

    A PCIe SSD (PCIe solid-state drive) is a high-speed expansion card that attaches a computer to its peripherals.

SearchCloudStorage

  • RESTful API

    A RESTful application program interface breaks down a transaction to create a series of small modules, each of which addresses an...

  • cloud storage infrastructure

    Cloud storage infrastructure is the hardware and software framework that supports the computing requirements of a private or ...

  • Zadara VPSA and ZIOS

    Zadara Storage provides block, file or object storage with varying levels of compute and capacity through its ZIOS and VPSA ...

Close