The Ebyte TX490-BLG-120 is an industrial-grade high-gain omnidirectional outdoor fiberglass antenna engineered for 470~510MHz (490MHz Sub-1GHz / LoRa / Wireless Metering) communications, delivering high 8dBi gain with 50Ω impedance and ≤2.0 VSWR via a standard N-Male (N-J) connector, featuring a 1200mm heavy-duty IP67 waterproof, UV-proof, and wind-resistant fiberglass radome for wireless base stations, IoT gateways, LoRaWAN concentrators, and long-range industrial telemetry radios.
Key Features & Advantages
- Ultra-High 8dBi Peak Gain & Extended Range: Built with a 1200mm high-efficiency multi-element collinear dipole array, providing superior signal concentration along the horizontal plane (360° horizontal × 80° vertical beamwidth) to bridge long-distance Sub-1GHz wireless telemetry links.
- Optimized for 470~510MHz Sub-1GHz & LoRa Bands: Professionally tuned for center frequency 490MHz across the 470MHz~510MHz spectrum, ideal for wireless automated meter reading (AMR), smart water/gas metering, and industrial wireless radio transceivers.
- Heavy-Duty Weatherproof Fiberglass (FRP) Radome: Reinforced fiberglass composite shell with UV stabilization, high wind resistance, and IP67 hermetic sealing, resisting rain penetration, moisture, salt fog, and outdoor thermal cycling.
- Standard N-Male (N-J) Interface & 100W High Power Rating: Features a robust nickel-plated brass N-J connector supporting up to 100W continuous RF power transmission with minimal connection insertion loss.
- Industrial Temperature Resilience (-40°C to +85°C): Reliable continuous outdoor operation across mountain repeaters, coastal installations, and hot industrial utility rooftops.
Core Specifications
| Parameter | Specification Details |
|---|---|
| Center Frequency | 490 MHz |
| Frequency Range | 470 ~ 510 MHz (Sub-1GHz ISM / LoRa Band) |
| Antenna Gain | 8.0 dBi (High Peak Gain) |
| Voltage Standing Wave Ratio (VSWR) | ≤ 2.0 |
| Radiation Pattern & Polarization | Omnidirectional (360° Horizontal Beamwidth / 80° Vertical Beamwidth) / Vertical Polarization |
| Input Impedance | 50 Ω |
| Max Power Handling | 100 Watts |
| Connector Type | N-J (N-Type Male) |
| Antenna Dimensions | 1200 mm (1.2m Length) × Φ20 mm (Diameter) |
| Radome Material | High-Strength Fiberglass (FRP Composite) |
| Weight | 350g (±10g Net Weight) / 1000g (Packaged Shipping Weight) |
| Operating Temperature | -40°C to +85°C |
Product Selection Guide
Notice for Selection: Please verify that your radio transmitter or gateway operates in the 470~510MHz (490MHz nominal) frequency band prior to placing an order.
| Model (SKU) | Center Frequency | Frequency Range | Peak Gain | Length | Connector | Primary Application |
|---|---|---|---|---|---|---|
| TX490-BLG-120 | 490 MHz | 470 ~ 510 MHz | 8.0 dBi | 1200 mm | N-J (N Male) | Long-Distance Sub-1GHz Base Stations, LoRa Gateways, AMR Water/Gas Metering Hubs |
Industrial Installation & Wiring
The TX490-BLG-120 high-gain antenna is 1.2 meters long and engineered for outdoor mast, tower, or wall bracket deployment:
- Mast Mounting & Clamping: Use heavy-duty U-bolt mounting brackets to fix the antenna base onto a vertical metallic or composite pole (recommended pole diameter Φ35mm~50mm). Mount vertically for proper vertical polarization.
- RF Connector Connection: Thread the N-J (N-Male) connector onto a standard low-loss 50 Ω feeder cable (e.g., LMR-400, 50-5, or 50-7 coaxial cable) terminated with an N-K (N-Female) jack. Hand-tighten securely and wrap with waterproof self-fusing silicone tape for full outdoor weatherproofing.
- Height & Line-of-Sight Clearance: Elevate the 1200mm antenna above surrounding metal structures, trees, and buildings to maximize 360-degree horizontal line-of-sight propagation.
- Lightning Surge Protection: For rooftop or outdoor tower installations, install a 50 Ω N-type gas tube surge arrestor inline and bond to the building ground busbar.
Practical Application Scenarios
1. Smart City AMR Automated Meter Reading & Wireless Metering Concentrators (470~510MHz)
Deploys as the central collection antenna on municipal utility collector hubs, aggregating real-time consumption data from thousands of residential water, electricity, and gas smart meters across urban and suburban districts.
2. Long-Range Sub-1GHz LoRaWAN Gateway & Industrial Radio Repeaters
Provides high 8dBi gain to boost transmission distance and penetrate deep foliage/concrete in smart agriculture, forestry telemetry, and environmental IoT monitoring networks.
3. Oilfield, Pipeline & Industrial SCADA Telemetry (Ebyte DTU Radios)
Pairs with Ebyte Sub-1GHz wireless serial data transceivers (such as E62/E90 DTU series) to establish long-distance point-to-point and point-to-multipoint industrial telemetry links across oilfields, mines, and river dams.
4. Solar Farm & Renewable Energy Storage Site Telemetry
Installed on solar plant central monitoring towers to communicate with string inverters and weather stations over vast geographical areas with high RF noise immunity.
FAQ Section
1. Why choose an 8dBi 1200mm fiberglass antenna for 490MHz / 470MHz Sub-1GHz applications?
An 8dBi high gain fiberglass antenna significantly compresses the vertical radiation beam into a wide, powerful 360-degree horizontal disc, vastly extending line-of-sight communication distance over long-range outdoor terrains compared to 2dBi~3dBi compact whip antennas.
2. What is the difference between 490MHz fiberglass antennas and 433MHz / 4G antennas?
The TX490-BLG-120 is custom-tuned specifically for the 470MHz~510MHz band (nominal 490MHz), common in Asian and European Sub-1GHz wireless metering and private telemetry networks. It provides lower VSWR and maximum radiation efficiency on 470~510MHz compared to standard 433MHz or 4G LTE broadband antennas.
3. How should a 1.2m fiberglass antenna be mounted to resist gale-force winds?
Due to the 1200mm length, secure the base firmly with dual heavy-duty U-bolt clamps onto a sturdy vertical steel mast. Ensure the antenna is plumb vertical and that all coaxial connections are sealed with UV-resistant waterproofing tape.
4. Can this antenna connect to SMA-based LoRa modules and DTU radio modems?
Yes. The antenna features a standard N-J (N-Male) connector. You can connect it to any SMA-equipped LoRa module, gateway, or DTU radio using a low-loss N-Female to SMA-Male (N-K to SMA-J) coaxial jumper cable (such as RG-58 or LMR-200).