• AU-300 / AU-500 GNSS Timing Antenna

Multi-GNSS Antennas for Precision Timing Applications
• AU-500: A dual-band antenna featuring high robustness and durability.
• AU-300: A single-band antenna offering excellent cost-effectiveness.
Both models are ideally suited for GNSS timing synchronization in critical infrastructure.

• PTP Grandmaster Clocks: Precision Time Protocol (PTP) primary clock systems.
• Power Grids: Power distribution networks and utility systems.
• Business Radio Systems: Professional mobile radio and commercial wireless communication systems.

• Global GNSS Support: Supports L1 and L5 bands. (Note: L5 band is available on AU-500 only).
• Superior Out-of-Band Filtering: Integrated noise filters effectively eliminate interference near 1.5 GHz caused by 4G/LTE base stations and other radio signals (such as satellite communications) that can degrade GNSS reception.
• Integrated Lightning Protection: Features lightning surge protection compliant with the IEC 61000-4-5 standard to protect the antenna.
• High Water Resistance: Designed with a high-grade waterproof structure to minimize field issues caused by heavy rain or flooding.
• Standard TNC Connection: Provides highly robust GNSS timing performance when paired with FURUNO GT-100/9001/90/88 and GF880x series receivers.
• Easy Installation: Compatible with the Furuno Antenna Fixing Bracket (AFB-01) for simplified mounting.
• Optional Coaxial Lightning Arrestor: Available to further protect the GNSS receiver from lightning surges.

• Constellations Supported:
L1: GPS L1C/A, GLONASS L1OF, Galileo E1B/E1C,BeiDou B1I /B1C, QZSS L1C/A, SBAS L1C/A
L5 (AU-500 only): GPS L5, Galileo E5a, BeiDou B2a, QZSS L5, NavIC L5
• Input Frequency:
L1: 1558 to 1606MHz
L5 (AU-500 only): 1164 to 1189MHz
• Polarization: Right Handed Circular Polarisation (RHCP)
• Output Impedance: 50 Ω
• Pre. Amp Gain: 40dB ± 3dB
• Pre. Amp Noise Figure: <= 2.5dB
•VSWR: <= 2.0
•Supply Voltage: DC 2.5 – 12V
•Current Consumption:
AU-500: <= 35 mA
AU-300: <= 15 mA
•Operating Temperature: -40°C to +85°C
•Storage Temperature: -40°C to +85°C
•Operating Relative Humidity: 20 to 95% RH
•Water Resistant: IP67
•Shock resistence (lightning): ±4kV, IEC 61000-4-5
•Outer Size: Diameter 112.5mm x Height 104.8mm
•Weight:
AU-500: 340 ± 17g
AU-300: 260 ± 13g
•Connector Type: TNC (J)