The Ebyte TX900-XPL33-100 is an industrial-grade 868MHz/915MHz magnetic sucker antenna featuring a 6dBi omnidirectional high gain, low VSWR under 1.5, 50 Ohm impedance, top-loaded coil design, a 360mm height profile, and an SMA-J male connector, providing robust RF signals and secure metal surface mounting for Sub-GHz LoRaWAN gateways, DTU transceivers, and wireless modules in IoT infrastructure.
| Specification Parameter | Technical Value |
|---|---|
| Frequency Band | 868 MHz / 915 MHz (Sub-GHz) |
| Antenna Gain | 6 dBi |
| VSWR (Voltage Standing Wave Ratio) | ≤ 1.5 |
| Nominal Impedance | 50 Ohm |
| Interface Connector | SMA-J (SMA Male, Internal Thread & Pin) |
| Total Height | Approx. 360 mm |
| Structural Features | Top-loaded coil, Strong Magnetic Sucker Base |
| Mounting Method | Magnetic adsorption on metallic surfaces |
Developer Resources
Please scroll up to the "Downloads" section on this page for full user manuals, technical specifications and RF test reports.
Product Selection Guide
Note: Please verify the frequency band (868MHz EU / 915MHz US), cable length, connector gender (SMA-J vs RP-SMA), and magnetic base diameter before selection to ensure RF impedance matching and mechanical installation compatibility with your device cabinet.
| Model SKU | Frequency Range | Gain | VSWR | Connector | Height | Mounting Type |
|---|---|---|---|---|---|---|
| TX900-XPL33-100 | 868M / 915M | 6 dBi | ≤ 1.5 | SMA-J (Male) | 360 mm | Magnetic Sucker Base |
| TX433-XP-200 | 433 MHz | 4.0 dBi | ≤ 1.5 | SMA-J (Male) | 500 mm | Magnetic Sucker Base |
| TX868-JK-11 | 868 MHz | 2.5 dBi | ≤ 1.5 | SMA-J (Male) | 110 mm | Direct Rubber Rod |
| TX915-FPC-4510 | 915 MHz | 2.0 dBi | ≤ 2.0 | IPEX-1 / U.FL | Internal FPC | Adhesive Patch |
Key Features & Advantages
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Dual-Band Sub-GHz Frequency Tuning: Designed specifically for 868MHz (EU868) and 915MHz (US915/AU915) ISM bands, offering precise impedance matching across both European and American IoT radio standards.
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Top-Loaded Coil Architecture: Features a 360mm vertical radiating element integrated with a top-loaded inductive coil, optimizing resonant frequency performance and boosting radiation efficiency to 6dBi.
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Industrial High-Retention Magnetic Base: Built with a heavy-duty permanent magnet base that firmly adheres to ferrous enclosures, outdoor control cabinets, and metallic vehicle roofs without falling off under vibration.
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Low Reflection Loss (VSWR ≤ 1.5): Engineered with strict 50 Ohm characteristic impedance matching, minimizing RF power reflection back to the radio transmitter and maximizing total radiated power.
Industrial Installation & Wiring
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Physical Adsorption: Place the magnetic base directly on a flat, ferromagnetic surface (metal cabinet door, electrical box top, or vehicle roof). The metal surface acts as an extended ground plane to maximize RF radiation efficiency.
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Connector Connection: Thread the SMA-J (Male internal thread and pin) connector onto the standard SMA-K (Female external thread and hole) bulkhead receptacle of your radio module, gateway, or DTU. Hand-tighten firm to ensure solid coaxial center contact and ground shielding.
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Routing Tip: Ensure the feeder cable is routed without sharp kinks or excessive tension.
Practical Application Scenarios
1. Smart Agriculture Irrigation and LoRaWAN Node Expansion
In large-scale smart farm monitoring systems, field sensors are often housed in sealed plastic enclosures. Connecting the TX900-XPL33-100 antenna to Ebyte E220-900T series LoRa modules or Sub-GHz nodes allows the antenna to be magnetically attached to elevated metal water tanks or pump station control boxes. The 6dBi omnidirectional gain extends node-to-gateway telemetry coverage over long distances across agricultural fields.
2. Electric Power Distribution Cabinet Remote Monitoring (DTU Integration)
Industrial metal switchgear and power monitoring cabinets attenuate wireless signals inside substation environments. By connecting this sucker antenna to Ebyte industrial RS485/RS232 Modbus DTUs (such as E810 or E90 series), engineers can pass the feeder cable outside through a cabinet slot and adsorb the antenna magnetically on top of the exterior metal panel, preventing signal shielding and ensuring reliable 868/915MHz data uploads to SCADA systems.
3. Fleet Vehicle Tracking and Mobile Data Acquisition Systems
For mobile asset management, logistics trucks, and agricultural equipment, on-board telemetry units demand resilient external antennas. The strong magnetic base of the TX900-XPL33-100 sticks firmly onto the metallic vehicle roof. Operating across 868MHz and 915MHz frequencies, it works seamlessly with Ebyte vehicular wireless transceivers to transmit real-time location and diagnostic data even under high-vibration road conditions.
4. Smart City Environmental Monitoring and Gateway Infrastructure
Outdoor environmental monitoring stations deployed on streetlight poles or metal gantries rely on Sub-GHz gateways for data aggregation. Extending the antenna elevation above obstruction levels using the TX900-XPL33-100 magnetic base improves line-of-sight propagation, overcoming urban signal attenuation and supporting multi-node connection stability.
FAQ Section
1. Can this antenna be used on non-metallic surfaces like plastic or fiberglass enclosures?
Yes, it will function physically, but for optimal RF radiation efficiency, it is recommended to place the magnetic base on a metallic surface. Metallic panels act as a RF ground plane, which helps maintain the tuned resonant frequency, optimal impedance matching, and full 6dBi directional pattern.
2. Is the SMA-J connector compatible with RP-SMA interfaces found on some Wi-Fi or LoRa devices?
No, the SMA-J is a standard SMA Male connector featuring internal threads and a center pin. RP-SMA (Reverse Polarity SMA) connectors have reversed center pins/receptacles. Please ensure your device chassis has a standard SMA-K (Female, external thread with center hole) receptacle. If your device uses RP-SMA or IPEX connectors, a proper coaxial adapter will be required.
3. How does this top-loaded sucker antenna handle high-vibration industrial environments?
The antenna utilizes an industrial-grade permanent magnetic base that provides strong magnetic holding force against iron or steel surfaces. The top-loaded coil structure maintains high radiation performance while keeping the mechanical center of gravity balanced, preventing mechanical displacement under typical industrial equipment or vehicle vibration.
4. What is the difference between operating this antenna at 868MHz versus 915MHz?
The TX900-XPL33-100 is broadband-tuned across both the 868MHz (standard European ISM / LoRaWAN band) and 915MHz (North/South American ISM band) spectrums. The antenna maintains a low Voltage Standing Wave Ratio (VSWR ≤ 1.5) across both center frequencies, allowing global equipment manufacturers to standardize on a single antenna hardware for international product shipments.
