This .bin file is designed to reset a base station's calibration settings and clear specific internal faults. It is often used in a "double-flash" procedure: first flashing the rescue file to clear the error, followed by a second flash of the standard firmware to restore normal operation.
If your base station is non-functional and showing this error, What is the "Calibration Rescue" File? lighthouse-tx-htc-2-0-calibration-rescue-244.bin