FOR SOLDIERS on the entrance, electromagnetic defences are as important as air: invisible when current, and disastrous when not. In July Ukrainian troops in southern Donbas discovered this out the laborious method. Abruptly, Russian drones switched frequencies, from commonplace 700-1,000 megahertz to 400-500 megahertz, blinding Ukraine’s electronic-warfare (ew) methods. The drones flew deep behind the strains, reducing off items and making provide routes impassable. Tens of Ukrainian navy automobiles have been destroyed each day in what Serhii Beskrestnov, a Ukrainian EW specialist, calls a “Russian safari”. Solely when Ukraine understood what was taking place, and secured new EW methods working at 500 megahertz, weeks later, have been they in a position to stabilise the scenario.
