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.
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Features:
- Quad-band GSM 3G support covers all Indian cellular frequency bands
- SMA Male right angle connector fits side-facing module antenna ports cleanly
- 2dBi rubber duck body is flexible and resists connector port stress
- Plug-and-use — no cable required for SIM800 SIM900 direct connection
- Compact stub form suitable for desktop lab builds and enclosure fitting
Technical specifications:
Applications:
- GSM 2dBi Rubber Duck Antenna used for SIM800 Arduino GPRS project
- College project uses 2dbi rubber duck antenna for GSM SMS alert build
- IoT gateway uses gsm antenna sma connector for compact cellular uplink
- GPRS shield uses sma connector right angle for clean module fit
- GSM data logger uses rubber duck antenna for lab bench cellular testing
Package includes:
- 1 x GSM 2dBi Rubber Duck Antenna
Komal Saboo –
Good GSM antenna quality
Pooja Rathi –
Packed safely
Mayur Gattani –
Suitable for robotics and wireless applications, offering a compact design and secure SMA connection for stable operation
Yash Taparia –
2dBi rubber duck antenna with SMA right-angle connector provides reliable signal performance and easy installation for GSM communication projects
Pankaj Laddha –
Trustworthy product
Ritu Navandhar –
Great experience overall
Harshit Soni –
Connector cap could be included for extra protection.
Neha Jain –
Helpful staff support