Precision Timing GNSS Module enhances cellular networks.

Press Release Summary:

Leveraging GNSS satellites with other clock sources, LEA-M8F generates 30.72 MHz reference clock for synchronizing industrial data and communication systems. SMT module, measuring 17 x 22 mm, includes low-noise 30.72 MHz VCTCXO, tracks satellite signals from any 2 constellations simultaneously, and provides 100 ppb autonomous hold-over accuracy. To ensure availability, module can acquire and track all 50+ GPS, GLONASS, and BeiDou satellites.

Original Press Release:

u-blox Launches Precision Timing Module for Cellular Networks

LEA-M8F leverages GNSS satellites with other clock sources to ensure base stations stay in-synch

THALWIL, Switzerland -- Swiss-based u-blox, a global leader in cellular and positioning modules and integrated circuits, announces the LEA-M8F precision timing GNSS module. The compact, surface-mount module generates a precise 30.72 MHz reference clock crucial for synchronizing industrial data and communication systems such as small, femto and macro-cell mobile networks. High accuracy is achieved by disciplining a local oscillator or other clock source with timing signals received from satellite-hosted atomic clocks.

To ensure satellite availability, LEA-M8F is able to acquire and track all 50+ GPS, GLONASS and BeiDou satellites. High sensitivity and aided GNSS option enables quick autonomous start-up even inside structures with limited sky-view.

"A reliable, compact and cost-effective precision reference clock is a crucial component used in many systems in the Critical Infrastructure and Key Resource (CIKR) sectors," said Thomas Nigg, vice president of product marketing at u-blox. "Our LEA-M8F GPS/GNSS satellite-disciplined timing module enables the proper operation of many mission-critical infrastructure systems including mobile and fixed-line communication networks, power generation and distribution systems, gas and chemical processing plants, banking, postal and goods distribution processes."

Measuring only 17 x 22 mm, the LEA-M8F module includes a low-noise 30.72 MHz VCTCXO (voltage and temperature controlled oscillator), meeting the master reference requirements for LTE Small Cells while providing 100 parts-per-billion autonomous hold-over accuracy. The module is also suitable for TD-LTE, LTE-Advanced and other applications requiring extended hold-over times when integrated with small cell platforms.

External sources of synchronization are supported through time-pulse and frequency inputs and a message interface. This allows measurements from macro-sniff, Sync-E or packet timing to be combined with measurements from GNSS to extend the availability of accurate synchronization and in doing so maximize cellular service availability.

LEA-M8F can track signals from satellites from any two constellations (e.g. GPS and GLONASS, GPS and BeiDou, GLONASS and BeiDou) simultaneously. Compatibility with multiple GNSS systems gives the LEA-M8F access to a large number of satellites, allowing synchronization even in urban or indoor areas with limited sky view. For stationary applications, once a location is known, accurate timing can be maintained based on the signal from just a single satellite.

For more information, download the u-blox whitepaper "GNSS Timing and the Rise of Small Cells". Detailed information about the LEA-M8F and evaluation kit EVK-M8F can be found on the u-blox website. Samples of the LEA-M8F will be available in Q1 2014. For more information contact the u-blox sales representative nearest you.

The LEA-M8F will be demonstrated at the Small Cells Americas exhibition in Dallas, Dec. 3-4, 2013 at u-blox stand number 3.

About u-blox

Swiss-based u-blox (SIX:UBXN) is the global leader in positioning and wireless semiconductors for the consumer, industrial and automotive markets. Our solutions enable people, vehicles and machines to locate their exact position and wirelessly communicate via voice, text or video. With a broad portfolio of chips, modules and software solutions, u-blox is uniquely positioned to enable OEMs to develop innovative personal, professional and M2M solutions quickly and cost-effectively. With headquarters in Thalwil, Switzerland, u-blox is globally present with offices in Europe, Asia-Pacific and the USA.


CONTACT: Sue Ann Murray, TriplePlay Media Strategies, Phone: 408.966.9891 E-mail:, or Andrew Miles, Product Manager, GNSS precision timing products, Phone: +41 44 722 7305 E-mail:

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