4G 2.5dBi Rubber Duck Antenna with Sma (M) R/a Connector

You're describing a compact and commonly used 4G antenna setup. Here’s a breakdown of the components:

1. 4G 2.5dBi Rubber Duck Antenna: This is a 4G antenna with a 2.5dBi gain. The term "rubber duck" refers to the typical design of the antenna, which is often a flexible, rod-like structure encased in a rubber or plastic material. The 2.5dBi gain indicates a lower gain compared to higher-dBi antennas, so it’s suitable for situations where high signal gain is not as critical.

2. SMA (M) R/A Connector: This is a Right-Angle (R/A) SMA male connector. The right-angle design allows the antenna to be connected in a way that can fit into tight spaces or make for a neater setup, minimizing stress on the connector and cable.

Summary:

• Antenna Type: 4G with 2.5dBi gain, rubber duck design.
• Connector: SMA male, right-angle (R/A).

This setup is commonly used in applications where space is limited or where a more compact and flexible antenna is needed. The lower gain (2.5dBi) means it might not perform as well in weak signal areas compared to higher-gain antennas, but it is typically sufficient for average signal conditions and more portable or space-constrained environments.