RAD is a global leader for telecom access solutions. As an industry pioneer for over 40 years, RAD reliably supplies worldwide communications service providers and critical infrastructure operators with best-of-breed Ethernet access devices, industrial IoT gateways, 5G xHaul, and Operational WAN solutions. Offering always-on connectivity from anywhere, along with data-driven, AI-powered actionable insights, RAD is distinguished for its supply-chain stability, which outsteps the market in delivery times. Founded in 1981, RAD serves as the anchor of the $1.6 billion RAD Group, an umbrella of independent companies that develop diverse networking and data communications solutions.

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  • Datasheet


1588 Grandmaster on an SFP with Built-In GNSS

RAD’s MiCLK® is the world’s first Grandmaster on an SFP, allowing easy upgrades for existing base stations and backhaul equipment to support IEEE 1588 for LTE/LTE-A and future 5G deployments.

Highly accurate time distribution closer to the cell site, at a lower cost

Easily plugged into service routers to simultaneously distribute frequency and time, the patented MiCLK eliminates the need to install GPS/GNSS antennas at every cell site while providing highly accurate timing distribution with full network coverage – even in underground and in-building installations. It is also ideal for 4G small-cell deployments. The field-proven MiCLK allows service providers to dramatically reduce installation and engineering costs by eliminating the need for additional space or power requirements. 

The field-proven MiCLK allows service providers to avoid spoofing and jamming risks, and dramatically reduces installation and engineering costs by eliminating the need for additional space or power requirements.

Key Take-Aways

Cost efficiency

by bringing PTP Grandmaster closer to the cell site


and frequency accuracy for LTE/LTE-A and 5G macro and small cells


backup and resiliency options to ensure optimal service uptime

Full coverage

even in underground and indoor installations


pluggable device: no installation, engineering or dedicated training required

Flexible virtualization of business CPE functionalities across access, aggregation and core domains.
Timing Synchronization for Mobile Networks
Frequency/phase for LTE/LTE-A macro and small cells with a fully featured PTP Grandmaster, including built-in GPS, Sync-E, IEEE 1588 and backup.

MiCLK Quick Specs

  • Fully-featured standard IEEE 1588 Grandmaster including phase/Time of Day (ToD) to meet stringent LTE-Advanced requirements
  • Built-in GNSS receiver
  • Robust GNSS backup – time holdover when GNSS reception is lost, using Sync-E or 1588 frequency reference from the network (Assisted Partial Timing Support) to deliver continuous and accurate synchronization to the base station
  • Miniature pluggable device fits in any standard SFP port
  • Scalable solution supports up to 64 slaves


Data Sheet

  • MiCLK


  • A RAD Intel Webinar: The Time for vCPE is Now!
  • Webinar: Boosting White Box Performance
  • LTE/LTE-A Synchronization and Backhaul Assurance
  • Commercializing NFV – is vCPE the First Step?

White Papers

  • Time Distribution Strategies in Cellular Networks

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