Omni Directional Fiberglass Antenna UHF400MHz Band

• Customization: Available
• Directionality: Omnidirectional Antenna
• Frequency Range: 433.175-434.665
• Model NO.: GLF-400A
• Nature of Operation: Omnidirectional Antenna
• Operating Wavelength: Microwave
• Polarization: Vertical Polarization
• Sturcture Form: Surface Antenna
• Usage: Communication Antenna
• Usage Occasion: Base Antenna
• VSWR: <1.5
• Qty/CTN: 20PCS
• Fob Port: Guangzhou
• MOQ: 100
• Payment: Tt, Paypal, Wu
• Dimensionality: One-Dimensional Antenna
• Material: Fiberglass and Cu
• Base Antenna: Omnidirectional Antenna
• Transport Package: 20PCS/CTN CTN Size: 97*20*39.5cm
• Specification: 20*150mm
• Trademark: LEHENG
• Origin: China
• HS Code: 8529109090
• Production Capacity: 1000PCS/Day
• Package Size: 53.00cm * 23.00cm * 29.00cm
• Package Gross Weight: 2.000kg

Product Description

433.175-434.665MHz 11dBi High-Gain Omnidirectional Fiberglass Antenna, Model GLF-400A

The GLF-400A is a high-performance, high-gain omnidirectional fiberglass antenna designed specifically for the narrow 433.175-434.665 MHz ISM band, offering focused coverage ideal for long-range telemetry, industrial IoT, and specialized data communication systems. With an impressive 11 dBi gain and a narrow 10° vertical beamwidth combined with full 360° horizontal coverage, this antenna provides exceptional signal strength and directionality for extended-range applications. Built for demanding outdoor installations, it features a durable fiberglass radome, N-female connector, and supports up to 100W input power with a low VSWR of ≤1.5 for efficient transmission. At 4.7 meters in length and weighing 5 kg, the GLF-400A is engineered for stability and reliability in harsh conditions, operating from -30°C to +60°C and withstanding wind speeds up to 60 m/s. Its tall, slender design optimized for UHF frequencies makes it an excellent choice for base stations, repeater sites, and critical communication links requiring maximum range and signal integrity in the 433 MHz band.

Specification

Model	GLF-400A
Frequency Range- MHz	433.175-434.665
Bandwidth -MHz	14
Gain-dBi	11
Vertical Beamwidth °	10°
HorizontalBeamwidth °	360°
VSWR	≤1.5
Polarization	Vertical
Max Power- W	100
Nominal Impedance-Ω	50
Connector	Nfemale
Length-m	4.7
Weight- kg	5
Working Temperature-ºC	-30°~60°
Rated Wind Velocity- m/s	60
Mounting Mast Diameter -mm	Φ40~50

Functional Advantages

High Gain with Focused Vertical Beam

With 11 dBi gain and a narrow 10° vertical beamwidth, this antenna concentrates signal energy for maximum range and superior signal-to-noise ratio in the 433 MHz ISM band.
 

Optimized for Long-Range Telemetry and Data Links

Specifically designed for the 433.175-434.665 MHz range, it provides reliable, long-distance connectivity for industrial telemetry, SCADA, and IoT applications.

Tall, Robust Construction for Outdoor Durability

At 4.7 meters with reinforced fiberglass construction, the antenna offers excellent structural integrity and wind resistance for permanent outdoor installations.

Core Applications

Industrial Telemetry and SCADA Systems
Provides long-range data links for remote monitoring and control of utilities, pipelines, agricultural systems, and industrial equipment.

Wireless Meter Reading and Smart Grid Communications
Supports automated meter reading (AMR) and smart grid infrastructure requiring reliable, long-distance connectivity in the 433 MHz band.

Environmental and Weather Monitoring Networks
Enables data collection from remote sensors for weather stations, hydrological monitoring, and environmental research applications.

Professional Radio Positioning and Tracking Systems
Supports radio direction finding, asset tracking, and vehicle/fleet management systems operating in the 433 MHz frequency range.

Amateur Radio and Specialized Communication Links
Provides high-performance omnidirectional coverage for amateur radio operators and specialized communication systems requiring maximum range.

FAQ

Q: What is the primary use of the 433.175-434.665 MHz frequency range?
A: This is part of the 433 MHz ISM (Industrial, Scientific, and Medical) band used worldwide for short-range devices, including industrial telemetry, wireless sensor networks, remote control systems, and some amateur radio applications.

Q: Why is this antenna so long (4.7 meters)?
A: The length is optimized for the 433 MHz frequency range to achieve the 11 dBi gain and narrow vertical beamwidth. Longer antenna elements at these frequencies provide higher gain and more focused radiation patterns.

Q: What type of mounting is required for this tall antenna?
A: The antenna requires a sturdy mast with diameter between 40-50 mm. Professional mounting hardware and proper guying may be necessary to ensure stability, especially in high-wind areas.

Q: What is the typical range achievable with this 11 dBi antenna?
A: Range depends on transmit power, receiver sensitivity, terrain, and environmental conditions. With typical 1-10W transmitters, ranges of 10-30 km are achievable in line-of-sight conditions, potentially more with higher power and optimal conditions.

Q: Is this antenna suitable for mobile or portable use?
A: Due to its 4.7 meter length and 5 kg weight, this antenna is designed for fixed installations rather than mobile or portable applications. It's ideal for permanent base stations and repeater sites.