This manuscript presents a technically rigorous and operationally relevant assessment of instrumental uncertainties associated with state-of-the-art HATPRO-Gen5 microwave radiometers. The study is well-conceived, timely, and aligns with current efforts across initiatives such as ACTRIS, GRUAN, and E-PROFILE to establish standardized, high-quality microwave radiometer (MWR) networks for both research and numerical weather prediction applications.

The work is particularly valuable for its:

• Systematic breakdown of key uncertainty sources (radiometric noise, calibration repeatability, drift/jumps, inter-instrument biases, and radome degradation),
• Use of long-term datasets and controlled calibration campaigns,
• Practical framework for operational traceability (e.g., "time to dry" metric, OmB-based quality control).

The paper is clearly written, well organized, and meets the high standards expected by Atmospheric Measurement Techniques. With minor revisions as outlined below, the manuscript is fully suitable for publication.