2G fiberglass antenna

　　1. Basic concepts of 2G network and antenna

　　2G frequency band: Common frequency bands in the world include 850/900/1800/1900 MHz (different countries/operators may have slight differences).

　　Antenna type:

　　External antenna: used for signal extension (such as remote areas, weak indoor coverage).

　　Internal antenna: integrated in terminal equipment (such as old mobile phones, IoT modules).

　　Directional antenna: long-distance directional coverage (such as backhaul between base stations).

　　Omnidirectional antenna: 360° all-round coverage (such as small base stations, hot spots).

　　2. Characteristics of fiberglass antenna

　　Material advantages:

　　Lightweight: The weight is about 30%-50% of that of metal antennas, and it is easy to install.

　　Corrosion resistance: acid and alkali resistance, strong weather resistance, suitable for long-term outdoor use.

　　Low loss: The signal transmission efficiency of high-frequency bands is better than that of plastic antennas.

　　Low cost: low material and production costs, high cost performance.

　　Typical application scenarios:

　　2G base station blind spot coverage.

　　Industrial Internet of Things (LoRa and NB-IoT may need to be compatible with 2G frequency bands).

　　Signal enhancement for old devices (such as walkie-talkies and POS machines).

　　3. Purchase and Installation Guide

　　Key Parameters:

　　Band Matching: Strictly match the local 2G network band (such as 900MHz vs. 1800MHz).

　　Gain (dBi): Common range 3dBi~12dBi (the higher the gain, the farther the coverage).

　　Polarization: Vertical (V) or horizontal (H), must be consistent with the base station.

　　Impedance: Usually 50Ω (compatible with feeder).

　　Standing Wave Ratio (VSWR): ≤1.5, to ensure signal transmission efficiency.

　　Installation Notes:

　　Height Priority: Try to install it in a high place (such as rooftops, iron towers), avoid obstacles.

　　Direction Adjustment: The directional antenna needs to be aligned with the base station (can be calibrated by a signal strength meter).

　　Environmental Requirements: Stay away from metal objects and strong electromagnetic interference sources (such as microwave ovens and high-voltage lines). 4. Maintenance and FAQs

　　Maintenance recommendations:

　　Regularly check the antenna interface for oxidation or looseness.

　　Clean the antenna surface (avoid using corrosive solvents).

　　Confirm the stability of the bracket after rain or shine.