Russia has reportedly improved the range of its jam-proof optical drones to over 40 miles — purported Chinese-Russian collaborative production imagery reveals dramatically increased tethered drone range

https://www.tomshardware.com/peripherals/cables-connectors/russia-has-reportedly-improved-the-range-of-its-jam-proof-optical-drones-to-over-40-miles-purported-chinese-russian-collaborative-production-imagery-reveals-dramatically-increased-tethered-drone-range