ESIM Exclusion Zones Must Start With Number and Locations, Iridium Says

Having multiple earth stations in motion sharing a channel is very different from having a single ESIM operate on that channel continuously, Iridium said in a docket 17-95 FCC filing posted Friday on a meeting with Office of Engineering and Technology staff including Chief Julius Knapp. The company said its interference concern isn't that constantly operating ESIM terminals will overload a non-geostationary orbit satellite receiver but that bursts of short-term interference that disrupt NGSO feeder links will be too frequent. That's why it's important to know the number of ESIMs operating a particular region, and their locations over time, alongside basic operating parameters, when defining realistic exclusion zones, it said. Iridium said it repeated its arguments against allowing ESIM deployment 29.25-29.3 GHz band (see 1801180052).