that radar systems can produce interference to digital radio-relay systems (DRRS), which gives rise to regular
bursts of errors related to the operational characteristics of the radar e.g. the radar antenna rotation rate
ITU-R F.1190-1995 history
1995ITU-R F.1190-1995 Protection Criteria for Digital Radio-Relay Systems to Ensure Compatibility with Radar Systems in the Radiodetermination Service