Apparently 5G roll-out delayed 2 weeks. It's a gong show tbh as there has been almost no real research into the potential effects on RADALT systems. Telecom companies have spent billions worldwide buying frequency blocks adjacent to the 4.2-4.4 MHz band RADALTs work in. The RTCA paper (Oct 20) makes for an informative read, biggest so-what is that the interference filtering/blocking varies significantly between system and a/c type, requiring long and laborious testing...something the system and a/c manufacturers are loathed to do as they'd be on the hook for costs. Here in the frozen north TCCA have established both Exclusion and Restricted zones around airports/heliports that have CAT I/II/III approaches. The AD pushed out by the FAA includes RNP approaches too, and could see the 'Not Allowed' being applied to approaches at 80 CONUS airports in the event the weather drops below 1/2 SM vis etc. Blancolirio has just put a reasonable YooToob vid out, give it a watch.