Cell-site simulators (IMSI catchers / Stingrays) are devices that emulate legitimate base stations to identify and track nearby mobile devices.

Rayhunter is an open-source project from the EFF designed to detect anomalies in cellular network behavior associated with these systems.

Configuration & Setup

• Rayhunter installed and configured on supported firmware.
• Device tested to ensure successful boot and logging functionality.
• Basic configuration completed (no flashing or setup required).

Functionality

• Passive monitoring of cellular control-plane activity ###### Logs events such as:
• Suspicious base station behavior
• IMSI catcher indicators
• Network downgrade attempts (e.g. LTE → 2G)
• Provides visibility into network behavior not exposed to standard mobile devices

Device Condition

• Refurbished RC400L unit
• Tested for Rayhunter compatibility and operation
• Cosmetic condition may vary (minor wear typical of used hardware)

Included

• RC400L device with Rayhunter installed
• 1 Battery

SIM card and data plan are optional and not required for basic monitoring functionality.

Notes

• Passive monitoring only — does not intercept or modify communications
• Detection depends on local network conditions and supported frequency bands
• No guarantee of detecting all cell-site simulators, but its better than catching none
• Intended for research, experimentation, and personal privacy awareness

All orders ship USPS with tracking. Orders usually ship in 72hrs with exceptions for US holidays.