1. The Citizens Band Radio Service, or Cb, as it is commonly called, is a type of radio communication under the category of Personal Radio Service

2. Cb slang is the distinctive anti-language, argot or cant which developed among users of Citizens Band radio (Cb), especially truck drivers in the United States during the 1970s and early 1980s.

3. Electromagnetic compatibility and radio spectrum matters (ERM); Land mobile service; Double side band (DSB) and/or single side band (SSB) amplitude modulated Citizens’ Band radio equipment; Part 2: Harmonised EN covering essential requirements under Article 3(2) of the R & TTE Directive

4. Citizens band radio (also known as Cb radio), used in many countries, is a land mobile radio system, a system allowing short-distance person-to-person bidirectional voice communication between individuals, using two way radios operating on 40 channels near 27 MHz (11 m) in the high frequency (a.k.a