Overview

The TOXU TX-G028 is an outdoor active GPS timing antenna designed to receive compatible satellite signals operating at 1575MHz.

It is suitable for communication base stations, time-synchronization equipment, GPS reference systems, marine navigation infrastructure, monitoring stations, and other fixed outdoor receiving applications.

The antenna provides a specified typical zenith gain of 38dBic and a nominal output impedance of 50 ohms. Its output VSWR is specified as no more than 2.5.

The active circuit operates from 4V to 6V DC with current consumption below 45mA. Bias power is normally supplied through the RF connection by a compatible GPS receiver, timing module, or external bias-tee circuit.

For outdoor deployment, the TX-G028 features an IP67-rated enclosure, IEC 61000-4-5 surge protection, IEC 61000-4-2 Class 3 ESD immunity, and specified resistance to wind speeds up to 140km/h.

The dome-style enclosure measures approximately 96mm in diameter and 112mm in total height according to the supplied dimension drawing. The lower connector section shown in the drawing is approximately 33mm long.

The TX-G028 is an active antenna only. It receives and amplifies compatible GPS signals but does not calculate position, generate timing output, or replace a GPS receiver or timing module.

Key Features

1575MHz GPS L1 Operation

Designed for compatible GPS L1 receiving equipment used in positioning, navigation, reference, and timing applications.

38dBic Typical Zenith Gain

The integrated active circuit amplifies received satellite signals before transmission through the connected coaxial cable.

50-Ohm RF Interface

The nominal output impedance supports integration with compatible 50-ohm GPS receivers, timing modules, and RF cable assemblies.

Output VSWR ≤2.5

Provides the specified RF matching performance when connected to a compatible receiving system.

4–6V DC Operation

Supports bias power supplied through the RF connection by a compatible GPS receiver, timing device, or bias-tee circuit.

Current Consumption Below 45mA

The active antenna circuit operates with a specified current consumption of less than 45mA.

IP67-Rated Enclosure

The weather-resistant housing supports outdoor installations exposed to dust and water when correctly mounted and sealed.

IEC 61000-4-5 Surge Protection

The specification lists an 8/20μs, 5kA surge test according to IEC 61000-4-5, with positive and negative polarity testing.

IEC 61000-4-2 Class 3 ESD Immunity

The specified ESD immunity supports installation in exposed outdoor and industrial environments.

Wind Resistance up to 140km/h

The mechanical structure is specified for outdoor operation at wind speeds up to 140km/h when correctly installed.

MTBF Above 100,000 Hours

The available specification lists a mean time between failures of more than 100,000 hours.

Compact Dome-Style Housing

The supplied drawing shows an antenna diameter of approximately 96mm and an overall height of approximately 112mm.

Technical Specifications

Dimension Drawing

The supplied drawing shows a dome-style outdoor antenna with a maximum diameter of approximately 96mm and an overall height of approximately 112mm.

The lower connector section shown in the drawing is approximately 33mm long.

Applications

• GPS Timing and Synchronization Systems

• Communication Base Stations

• Network Timing Infrastructure

• GPS Reference Stations

• Marine Navigation Equipment

• Coastal Monitoring Systems

• Power and Utility Timing Equipment

• Industrial Monitoring Stations

• Outdoor GPS Receivers

• Fixed Navigation Infrastructure

System Integration

The TX-G028 must be connected to a compatible GPS receiver, timing module, synchronization device, reference receiver, or other equipment supporting reception at 1575MHz.

The antenna requires 4–6V DC bias power with sufficient current capacity. Bias power is normally supplied through the RF cable by the connected receiver or a compatible external bias-tee circuit.

Before connection, confirm the receiver’s antenna-bias voltage, available current, input impedance, active-antenna detection, short-circuit protection, and RF input requirements.

Use a compatible 50-ohm coaxial cable assembly. Cable type and length should be selected according to the installation distance because coaxial-cable insertion loss can reduce the signal level delivered to the receiver.

Install the antenna with the upper radome facing the sky and provide the clearest practical sky view. Avoid nearby metal structures, walls, roofs, transmitting antennas, motors, high-current cables, and other potential sources of blockage, reflection, or electromagnetic interference.

The IP67 rating applies to the antenna enclosure under the specified product configuration. The mating connector, cable joint, mounting interface, grounding system, and complete installation must also be correctly sealed and protected.

IEC 61000-4-5 surge immunity does not replace a complete site-level lightning-protection system. Exposed outdoor installations may require external surge arresters, professional grounding, and additional lightning-protection measures.

Final signal reception, timing performance, waterproofing, surge protection, and mechanical reliability should be verified on the completed equipment and installation.

Why Choose TOXU

TOXU provides GPS and GNSS timing antennas, positioning antennas, RTK antennas, embedded antennas, RF cable assemblies, RF connectors, GNSS modules, receiver boards, and integrated positioning hardware for equipment manufacturers and system integrators.

Our engineering support covers antenna selection, receiver compatibility, connector and cable configuration, antenna-bias confirmation, cable-loss evaluation, outdoor installation, prototype testing, and volume-production support.

With IATF16949 and ISO9001-certified manufacturing capabilities, TOXU supports customized connectors, cable assemblies, labels, packaging, quality inspection, engineering verification, and stable delivery for overseas B2B projects.

FAQ

Q: What type of antenna is the TX-G028?

A: It is a 1575MHz outdoor active GPS timing antenna.

Q: Is it suitable for GPS L1 reception?

A: Yes. The specified 1575MHz operating frequency is intended for compatible GPS L1 receiving equipment.

Q: Does the antenna generate timing data directly?

A: No. It receives and amplifies compatible GPS signals. A separate GPS receiver or timing module is required to generate time, synchronization, navigation, or position data.

Q: What power supply does the antenna require?

A: The active circuit operates from 4V to 6V DC and consumes less than 45mA.

Q: What is the specified gain?

A: The available specification lists a typical zenith gain of 38dBic.

Q: Is the antenna suitable for outdoor installation?

A: Yes. It has an IP67-rated enclosure and is specified for outdoor applications when correctly installed and sealed.

Q: Does it include surge protection?

A: The specification lists an 8/20μs, 5kA surge test according to IEC 61000-4-5. Complete outdoor installations may still require external surge protection and grounding.

Q: What are the antenna dimensions?

A: The supplied drawing shows an approximate diameter of 96mm and an overall height of 112mm.

Q: Can it be used for marine navigation systems?

A: It can be integrated with compatible GPS receiving equipment used in marine navigation and coastal monitoring systems. Final suitability depends on the complete system and installation environment.

Q: Can TOXU provide a matching RF cable assembly?

A: Yes. TOXU can evaluate compatible 50-ohm coaxial cables, connector configurations, cable lengths, labels, and packaging according to the project requirements.