LibreCAL Electronic Calibration Kit Specifications: Product Name: LibreCAL Electronic Calibration Kit Compatibility: Designed for LibreVNA Calibration Performance: S11 directivity better than 50dB within 3GHz, better than 40dB above 3GHz Calibration Type: Metric-grade electronic calibration Usability: Directly callable through LibreVNA-GUI Open Source: All manufacturing files are published for self-assembly Limitation: Not suitable for isolation calibration due to internal leakage Features: Seamless Integration: Specifically designed for LibreVNA, allowing for quick and easy calibration directly through the LibreVNA-GUI. Superior Calibration Performance: Offers exceptional S11 directivity, outperforming many mechanical calibration kits without available calibration parameters. Open-source Design: All necessary files are available for self-assembly, providing flexibility for professional users to create their own kits. Pre-calibrated Kit: Comes professionally calibrated using metric-grade calibration equipment to ensure peak accuracy and performance. Convenient Calibration: Eliminates the need for complicated manual operations, simplifying the calibration process significantly compared to mechanical kits. Package Included: 1 x LibreCAL Electronic Calibration Kit 1 x User Manual