The GSM 2dBi Rubber Duck Antenna covers six frequency bands — 800, 900, 1800, 1900, 2010, and 2025 MHz — making it compatible with Quad Band GSM (Global System for Mobile) and 3G networks. Rubber duck is the engineering term for a short flexible whip antenna (a flexible antenna that bends without damage). The 2dbi SMA plug connector on this antenna is a right angle type, meaning the connector points sideways at 90 degrees instead of straight up. That lets you mount the antenna flat against an enclosure wall where a vertical connector would not fit.
The SMA connector right angle format reduces mechanical stress on the module’s antenna port when the antenna gets bumped. One non-obvious detail — a right angle connector adds a small impedance discontinuity at the bend point, but at GSM frequencies below 2100 MHz the signal loss from this is negligible in practice. The honest limitation here is gain. At 2 dBi, this antenna is not suitable for weak-signal rural areas where you need 5 dBi or higher gain. For urban and semi-urban locations with decent tower coverage, 2 dBi works reliably.
The gsm antenna SMA connector on this model fits SIM800L, SIM800C, SIM900A, and any module with a standard SMA female port. Students building GSM projects for the first time and engineers deploying compact IoT enclosures both use it regularly. StemVolt offers fast and reliable delivery of this module across India with trusted service support.
Related Product:
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Check out the IoT Antenna category for wireless connections
Features:
- Rubber duck flexible body at 2 dBi gain survives physical knocks without snapping the antenna element
- Quad Band GSM coverage across 800, 900, 1800, and 1900 MHz supports most Indian SIM card networks
- SMA male right angle connector allows side-mounting inside enclosures with low vertical space
Technical specifications:
| Specification | Details |
|---|---|
| Antenna Type | Rubber Duck GSM Antenna |
| Gain | 2dBi |
| Frequency Range | 800/900/1800/1900/2010/2025 MHz |
| Supported Bands | Quad Band GSM + 3G |
| Connector Type | SMA Male – Right Angle |
Applications:
- GSM 2dBi Rubber Duck Antenna fits a SIM800 vehicle tracker mounted inside a car dashboard
- Remote data logger reads sensor values and pushes GPRS packets using this antenna at 900 MHz
- Compact IoT node transmits temperature and humidity readings over GSM to a cloud dashboard
Package includes:
- 1 x GSM 2dBi Rubber Duck Antenna
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