The Institut für Erdmessung at Leibniz University Hannover participated in the IGS ring receiver antenna calibration and validation campaign. During this campaign, raw data were collected on the laboratory roof of the institute. An external Rubidium clock, specifically a Stanford FS725 Benchmark known for its precision with an aging rate of 2×10^(−11), was used. The data also included information for a short baseline relative to the MSD8, using a similar type of receiver. For the antenna calibration, a JAVAD Delta TRE_S3S model was employed alongside a common clock ensemble to ensure accuracy.