In article , JJ
writes:

claims that "CB" originated in 1946...except that
"11 meters" is not at 465 MHz. :-)

There was a band at that frequency that citizens could apply for and
use, thus a "citizens band" or "cb".

It was called the "citizens radio service" even back then, and the 465 MHz
allocations were referred to as Class A and Class B citizens' band - or cb.
(One class was voice and the other was radio control). When the 27 MHz
allocations were authorized, they were known as Class C and Class D cb.

CB was already more than a decade old in 1958.

73 de Jim, N2EY