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Cdsenet 410~510MHz 433/470MHz Fiberglass Antenna TX400-BLG-55 6dBi N-Male FRP Antenna
Cdsenet 410~510MHz 433/470MHz Fiberglass Antenna TX400-BLG-55 6dBi N-Male FRP Antenna
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SKU:TX400-BLG-55
Product Overview
The TX400-BLG-55 is a professional-grade dual-band 433 MHz / 470 MHz omnidirectional fiberglass antenna engineered for stable, long-range sub-GHz IoT communications. Covering the broad 410–510 MHz spectrum in a single unit, it eliminates the need for separate 433 MHz and 470 MHz antennas — a key advantage over single-band alternatives. At 600 mm physical length, it is significantly more compact than 12 dBi high-gain variants (typically 1200 mm+), while still delivering a measured 6.0 dBi peak gain with VSWR ≤ 1.5 across the full band. Weighing only 183 g, it imposes minimal wind-load on pole and rooftop mounts. The sub-GHz wavelength (~69 cm at 433 MHz) provides inherently superior wall and foliage penetration compared to 2.4 GHz antennas, making this the preferred choice for outdoor LoRa gateways, smart metering base stations, and industrial telemetry nodes in obstructed environments. The N-J (N Male) connector and FRP (Fiberglass Reinforced Plastic) radome ensure low-loss RF coupling and all-weather structural integrity.
Technical Specifications
| Parameter | Technical Value |
|---|---|
| Frequency Range | 410 – 510 MHz (433 MHz & 470 MHz Dual-Band) |
| Peak Gain | 6.0 dBi |
| VSWR | ≤ 1.5 (full band) |
| Connector Type | N-J (N Male) |
| Radome Material | FRP (Fiberglass Reinforced Plastic, weather-resistant) |
| Physical Length | ~600 mm |
| Weight | 183 g ± 1 g |
| Impedance | 50 Ω |
| Radiation Pattern | Omnidirectional (horizontal plane) |
| Certification | CE / RoHS |
Updated: April 2026
Product Details
Dual-Band 410–510 MHz Coverage & 6.0 dBi Sub-GHz Gain
A single TX400-BLG-55 covers both the 433 MHz (EU/Asia ISM) and 470 MHz (CN LoRa) bands simultaneously, eliminating dual-antenna installations. At 433 MHz, the free-space wavelength is ~69 cm — these longer waves diffract around concrete structures and penetrate dense foliage far more effectively than 2.4 GHz signals. The 6.0 dBi gain moderately compresses the vertical beam, extending horizontal reach while preserving sufficient elevation coverage for sensors at varying heights across multi-story buildings or uneven terrain.
Ultra-Lightweight 183 g Construction & Industrial N-J Interface
At 183 g, the TX400-BLG-55 is among the lightest antennas in its gain class, reducing mechanical torque on pole mounts and rooftop brackets — critical for long-term structural integrity in high-wind installations. The N-J (N Male) connector provides a 50 Ω impedance-matched, weatherproof RF interface rated for high-power outdoor base station equipment. The FRP radome is UV-stabilized and fully waterproof, maintaining dimensional stability and RF transparency across extended outdoor deployments.
Professional Test Report
Validated on a vector network analyzer across the 410–510 MHz wideband: VSWR ≤ 1.5 maintained at all measured frequency points across both 433 MHz and 470 MHz bands, confirming <4% reflected power and return loss exceeding 14 dB. Maximum energy transfer efficiency is sustained throughout the full operating spectrum.
Ideal Applications
LoRaWAN & Smart Metering
Establishes centralized 433/470 MHz data collection hubs in dense urban layouts, penetrating basements and multi-story buildings to aggregate water, gas, and electricity meter readings via LoRa or FSK protocols.
Agricultural IoT & Environmental Sensors
Sub-GHz wavelengths bypass thick foliage and uneven farmland terrain, reliably connecting dispersed soil moisture, weather station, and livestock tracking sensors across large open fields.
Industrial Telemetry & SCADA
Maintains seamless communication between automated machinery, SCADA systems, and control rooms across large factory floors and warehouses where 2.4 GHz signals suffer heavy multipath attenuation.
Wireless Alarm & Security Systems
Serves as the low-latency communication backbone for sprawling residential and commercial security perimeters, where reliable signal propagation through walls is non-negotiable.
Resources
📄 Download Official Datasheet (PDF)Frequently Asked Questions
Q: Can the TX400-BLG-55's N-J (N Male) connector interface directly with standard 433 MHz SMA radio modules or indoor gateways?
A: No direct connection is possible. The N-J interface is a 50 Ω RF connector designed for high-power outdoor base station equipment, while most 433 MHz / 470 MHz IoT modules and indoor LoRa gateways use smaller SMA connectors. To bridge the two, use a low-loss "N Female to SMA Male" RF pigtail cable rated for sub-GHz frequencies. Ensure cable insertion loss is below 0.5 dB to preserve the antenna's 6.0 dBi gain advantage over the link budget.
Q: Why does the 410–510 MHz dual-band coverage matter for LoRa deployments in different regions?
A: LoRa operates on different sub-GHz frequencies by region: 433 MHz is the ISM band used across Europe and Asia, while 470–510 MHz is the CN470 band designated for China LoRaWAN deployments. The TX400-BLG-55's 100 MHz bandwidth (410–510 MHz) covers both allocations in a single antenna, making it suitable for multi-region gateway deployments without hardware changes. This eliminates the need to stock separate 433 MHz and 470 MHz antennas for different markets.
Q: Does the 600 mm length and 183 g weight create structural risk on rooftop or pole mounts during high-wind conditions?
A: The 183 g mass is specifically engineered to minimize wind-load torque on mounting hardware. At sub-GHz frequencies, achieving 6.0 dBi gain requires a physically longer radiating element than at 2.4 GHz — the 600 mm length is the minimum necessary for this gain level. The FRP radome provides structural rigidity without adding significant weight, and the antenna's slim profile reduces aerodynamic drag. For permanent rooftop installations in high-wind zones, use a heavy-duty pole clamp rated for the mast diameter and verify the mount's wind-load specification against local building codes.