RADIO SHACK Amplified Noise Cancelling CB Microphone Model 21-1177

Circa 1995

Use Case:

Used with Citizens Band (CB) and amateur radio transceivers. The built-in amplifier boosts the user's voice (modulation) before transmission, a feature often desired for clearer communication over longer distances. The "noise cancelling" element helps filter out background noise in mobile or noisy environments.

Historical Significance:

A classic example of an after-market accessory for the popular CB radio hobby. Its features represent attempts to improve the performance of consumer-grade radio equipment. Radio Shack played a significant role in making this technology and associated accessories widely accessible to the American public.