4G 2.5dBi Rubber Duck Antenna With SMA (M) St. Connector

a specific type of antenna. Here's a breakdown of the components and their meaning:

1. 4G: Indicates that the antenna is designed for use with 4G LTE networks, which are commonly used for mobile data communications.

2. 2.5dBi: This refers to the antenna's gain, which is a measure of its ability to direct radio waves in a particular direction. A 2.5 dBi gain is relatively low, meaning the antenna provides broad coverage but might not be as effective at focusing signal strength in a specific direction.

3. Rubber Duck Antenna: This is a type of antenna that is flexible and typically has a rubber or plastic coating. It's called a "rubber duck" because of its shape, which resembles the neck of a rubber duck toy. These antennas are popular for their durability and ease of use.

4. SMA (M): This indicates the type of connector used. SMA stands for SubMiniature version A, and the (M) denotes that it is a male connector. SMA connectors are commonly used in RF applications for connecting antennas to devices.

5. St. Connector: This might be a typo or misinterpretation. It’s likely intended to refer to a standard connector, but SMA is the specific type being used here.