Rubber antennas, also named as rubber duck antennas, are a type of omnidirectional antenna commonly used in portable communication devices such as two-way radios, walkie-talkies, and handheld scanners.
It is called a rubber antenna because it is typically encased in a rubber or plastic material that provides protection against damage and weather conditions.
Rubber antennas are often flexible and bendable, which makes them ideal for use in portable devices that may be subject to rough handling. They are also generally shorter and smaller than other types of antennas.
One advantage of rubber antennas is that they are omnidirectional, meaning they can receive and transmit signals from any direction.