GP-Blocker — RF Switch with Embedded GNSS Jammer

Overview

The GP-Blocker is an advanced RF switch and embedded L-band GNSS jammer designed to protect critical infrastructure time servers from high-power, military-grade spoofing. By physically disconnecting the GNSS antenna and forcing the time server into Hold Over mode upon detecting an attack, it ensures the integrity of the PPS signal.

Technical Summary

• Frequency Range: 1.15 GHz to 1.65 GHz (L-band)
• Isolation: 110 dB RF isolation
• System Latency: Under 3 seconds
• Control Interface: RS485 with open API
• Power Handling: Less than 10 W (5V DC, 28 dBm P1dB)

Operational Use Cases

• Safeguarding time servers at critical fixed-site infrastructure
• Blocking manipulated signals across GPS, Galileo, BeiDou, and GLONASS
• Simulating antenna failures to safely trigger Hold Over mode in timing systems

Deployment Environments

This switch is intended for fixed-site deployments. It can operate as a standalone module for time server protection or integrate closely with advanced detection systems like the GP-Probe TGE2.

Performance Metrics

• RF Isolation: 110 dB to fully block powerful spoofing signals
• Reaction Time: Sub-3 second system latency
• Frequency Coverage: Efficiently blocks signals from 1.15 GHz to 1.65 GHz

Setup & Portability

The GP-Blocker includes a built-in secondary backup power circuit powered directly by the GNSS receiver's antenna port, maintaining operation during main power failures. Verify exact enclosure dimensions and mounting mechanisms on the product datasheet.

Compatibility

Compatible with L-band GNSS receivers relying on GPS, GLONASS, Galileo, or BeiDou constellations. It features an RS485 communication interface with an open API for seamless integration with custom network controls or the GP-Probe TGE2.

FAQs

• How do spoofing attacks affect GNSS infrastructure? Sophisticated spoofing attacks transmit counterfeit signals that can aggressively degrade positioning accuracy and disrupt precise timing reference signals (PPS). This poses severe risks to time-synchronized networks and critical national infrastructure.
• How is protection maintained if primary power is lost? Specialized GNSS protection switches may include backup power circuits that draw power directly from the connected GNSS receiver's antenna port. Always verify voltage ratings and connector compatibility on the hardware datasheet prior to installation.
• What is GP-Blocker — RF Switch with Embedded GNSS Jammer used for? GP-Blocker — RF Switch with Embedded GNSS Jammer is categorized as GNSS Cybersecurity, RF Electronics. Listed applications include GNSS Protection.
• Problems we solve: how do we scope a GNSS monitoring requirement? Interference concerns alone do not define a GNSS monitoring requirement. Share your site or platform, operating conditions and the information operators need so Cyntony can help compare candidate solutions (Our process).
• Outcomes we deliver: what comes from working through the requirements? The practical outcome is a requirements-led set of product options to evaluate with Cyntony. Confirm performance, compatibility and any service scope for your configuration before selection (Our process).

Video Notes

A short video demonstrating the sub-3 second system latency and the automatic transition to Hold Over mode during a simulated spoofing event would effectively highlight the module's rapid defense capabilities.