LC99TIAMD – Quectel Dual-Band High-Precision Timing GNSS Module (LC99T Series)

Product Overview

The LC99TIAMD is a dual-band, high-precision timing GNSS module manufactured by Quectel Wireless Solutions. It belongs to the LC99T series, which is specifically designed for precision timing synchronization applications such as 5G/4G base stations, telecom networks, smart grid systems, data centers, and industrial timing infrastructure.

The module supports multi-constellation GNSS reception with L1 + L5 dual-band capability, enabling extremely accurate timing output and high stability in dense urban and high-interference environments.

According to Quectel’s official documentation, the LC99T series provides nanosecond-level timing accuracy, multi-GNSS support, integrated AGNSS, SBAS, and a high-stability 10 MHz frequency output, making it suitable for critical synchronization systems. It is designed for network timing applications requiring sub-14 ns accuracy (1σ).

Part Number Breakdown

Competitive Advantages

✔ Dual-band L1 + L5 timing GNSS
✔ Nanosecond-level synchronization accuracy (<13.6 ns)
✔ 10 MHz frequency reference output
✔ Multi-constellation GNSS support
✔ High-stability timing architecture
✔ AGNSS + SBAS support
✔ Designed for telecom infrastructure (5G/4G)
✔ Compact LCC module format
✔ Industrial temperature range (-40°C to +85°C)

Key Features

1. Dual-Band High-Precision Timing (L1 + L5)

The LC99TIAMD uses dual-frequency GNSS reception, which significantly improves timing stability.

Benefits:

• Reduced ionospheric error
• Higher timing stability
• Better performance in urban environments
• Improved synchronization accuracy

2. Nanosecond-Level Timing Accuracy

The module provides ultra-precise timing synchronization:

• PPS accuracy: < 13.6 ns (1σ)
• Sub-nanosecond jitter performance (optimized mode)

Benefits:

• Extremely precise network synchronization
• Ideal for telecom base stations
• Supports 5G timing architecture
• Stable frequency reference generation

3. 10 MHz Reference Output

The module provides a 10 MHz frequency output signal for synchronization systems.

Benefits:

• Used in telecom base station clocks
• Supports network timing distribution
• Stable reference for RF systems
• Critical for 5G X-haul synchronization

4. Multi-GNSS Constellation Support

Supports all major GNSS systems:

• GPS
• GLONASS
• Galileo
• BeiDou
• QZSS
• NavIC

Benefits:

• More satellites available simultaneously
• Higher reliability in urban environments
• Better redundancy in timing systems
• Global deployment capability

5. High Stability Timing Engine

The module is optimized for timing-centric GNSS operation:

• Survey-in mode
• Single-satellite timing
• Holdover support

Benefits:

• Stable timing even under weak GNSS conditions
• Reduced drift in synchronization systems
• Suitable for mission-critical infrastructure

6. Integrated AGNSS + SBAS Support

Supports:

• AGNSS (Assisted GNSS)
• SBAS (WAAS, EGNOS, MSAS, GAGAN)

Benefits:

• Faster signal acquisition
• Improved timing accuracy
• Better availability in weak signal areas
• Reduced convergence time

7. Industrial & Telecom-Grade Reliability

Designed for:

• 5G base stations
• Smart grids
• Data centers

Benefits:

• Stable long-term timing output
• High reliability in critical systems
• Designed for continuous operation
• Suitable for infrastructure-level deployment

8. Compact Timing Module Design

• Small LCC package (22.4 × 17 mm class)

Benefits:

• Easy integration into telecom hardware
• Compact PCB footprint
• Simplified system design
• Low BOM complexity

Applications

📡 5G / 4G Telecom Infrastructure

• Base station synchronization
• O-RAN timing systems
• X-Haul network synchronization

⚡ Smart Grid Systems

• Power grid synchronization
• Substation timing control
• Energy distribution systems

🏢 Data Centers

• Server synchronization
• Distributed computing timing
• Network infrastructure clocks

🛰 Satellite & Communication Systems

• RF timing reference
• Ground station synchronization
• Communication system timing

🏭 Industrial Automation

• Factory synchronization
• Motion control systems
• Industrial timing networks