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433MHz LoRa & RF Antenna (SMA Male, Omnidirectional)

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A high-performance radio transceiver is only as good as the antenna connected to it. The 433MHz LoRa RF Antenna is a precision-tuned, omnidirectional aerial designed specifically for devices operating in the 433MHz Industrial, Scientific, and Medical (ISM) radio band. Whether you are using a standard RF transmitter or an advanced LoRa module (like the SX1278), attaching a properly matched antenna is the single most critical step in preventing signal degradation and maximizing your communication distance.

Designed as a flexible "rubber duck" style aerial, this antenna features an articulated joint that allows it to bend from 0 to 90 degrees, making it easy to orient vertically regardless of how your device enclosure is mounted. It terminates in a standard SMA Male connector, providing a secure, screw-on connection that minimizes RF power loss and resists disconnection in high-vibration environments.

Key Features & Functional Advantages:

  • Precision 433MHz Tuning: Unlike generic, wide-band antennas, this aerial is factory-tuned specifically for the 433MHz center frequency, ensuring optimal voltage standing wave ratio (VSWR) and maximum power transmission.

  • Broad Omnidirectional Pattern: Radiates a consistent 360-degree signal envelope, eliminating the need to carefully aim the antenna at the receiver. This is critical for mobile nodes or sensors deployed in unpredictable orientations.

  • Articulated Hinge Design: Features a built-in 90-degree elbow joint. This allows the antenna to be pointed straight up—the required orientation for optimal vertical polarization—even if your device is mounted horizontally on a wall or chassis.

  • Rugged Polyurethane Housing: The internal copper elements are protected by a flexible, impact-resistant TPE/ABS casing, making it durable enough for both indoor prototyping and sheltered outdoor deployments.

Perfect For:

  • LoRa Sensor Networks: The ideal companion for SX1278 and Ra-02 modules, providing the necessary signal radiation to achieve multi-kilometer range.

  • Smart Home & Security Systems: Boost the reception of 433MHz door/window sensors, wireless driveway alarms, and automated gate controllers.

  • Weather Stations & Telemetry: Ensure reliable data packet delivery from remote temperature, wind, and rain sensors back to your central base station.

  • Remote Control (RC) Transmitters: Upgrade standard hobbyist remote controls and receivers operating on the 433MHz band for extended line-of-sight control.

Technical Specifications:

  • Center Frequency: 433 MHz (Optimized for the 433MHz ISM band)

  • Antenna Gain: Typically 2.5dBi to 3dBi

  • Radiation Pattern: Omnidirectional

  • Polarization: Linear Vertical (For best results, both transmitting and receiving antennas should be oriented straight up)

  • Voltage Standing Wave Ratio (VSWR): ≤ 1.5 (High efficiency power transfer)

  • Impedance: 50 Ohms (Standard match for almost all RF modules)

  • Connector Interface: SMA Male (Features inner threads with a center pin)

  • Maximum Power Handling: 50W

Ensure your order is placed by 2PM to guarantee next-day delivery! Our commitment to prompt service includes a 24-hour delivery system through our network of carriers, aimed at ensuring your package arrives right on schedule.

Please note, a delivery fee of €4.99 applies for orders under €50. For those in remote areas, be aware that our couriers may apply an extra surcharge. This additional fee helps cover the costs of transporting your items to harder-to-reach locations.