Many SolarEdge systems as installed radiate interference affecting shortwave radio reception and licensed amateur radio operations. What make this worse is that in an emergency when the grid goes down and the inverter shuts down the optimizers still generate radio noise because they are still powered by the panels. Without power many communication system cease to function. With radio interference from the optimizers emergency communications provide by amateur radio can be severely degraded. This happens only between dawn and twilight, but disasters can happen at any time. FCC and ARRL are aware. I hope that FEMA is aware also. At present I"m unaware of any interference to aeronautics.