© Maxim Shemetov/Reuters
The radio that makes Russia's strike drones resistant to Ukrainian jamming is a Chinese-made part sold openly, and the company that makes it has escaped the sanctions hitting the rest of the drone supply chain, the OSINT group Frontelligence Insight found. The part, a mesh radio modem, has been pulled from downed Russian drones even as Western and Ukrainian sanctions expanded to cover the engines, navigation, motors, cameras, and chips around it.
Russia's war on Ukraine now runs on drones built largely from Chinese parts—a flow China keeps open to Moscow while restricting the same goods to Kyiv.
The modem is the XK-F358 mesh radio made by Shenzhen Xingkai Technology Co., Ltd. of Guangdong. It sells openly online. The company's Made-in-China storefront lists it at $8,100 to $9,000 apiece, and Serhii "Flash" Beskrestnov previously put the price near $7,000.
Ukraine and its partners have sanctioned Chinese suppliers of drone engines, navigation receivers, motors, cameras, and chips—one Ukrainian round aimed explicitly at parts for drones built to bypass electronic warfare—but not the radios.
Ukraine's Defense Intelligence photographed an XK-F358 recovered from a downed Geran-5, and Beskrestnov photographed another taken from a Gerbera, Militarnyi reported on 19 January 2026.
Russia's response to electronic warfare wasn't a single solution. It evolved along two major paths: fiber-optic drones and mesh networks. This thread summarizes Frontelligence Insight analysis based on OSINT data and a report by the Center for Defense Reforms. Thread
— Tatarigami_UA (@Tatarigami_UA) July 30, 2026pic.twitter.com/k0v0ZeWKYB
The modem uses COFDM modulation and a mesh design in which each unit relays traffic for the rest, so packets reroute automatically when a node drops.
The same modem also turns up under a second name—HX-50, in a more industrial variant—and its use is no experiment: it spread onto Russia's Shahed-136/Geran-2 strike drones from July 2025 and reached serial integration by early September.
The network keeps working after losing roughly 80% of its nodes and can link drones across more than 100 kilometers, or up to 600 in relay chains, according to Beskrestnov, a Ukrainian defense adviser who has examined the recovered units. That is why conventional jamming struggles against it: an attacker has to suppress every node at once rather than break a single link.
Ukraine's National Security and Defense Council (NSDC) has sanctioned Chinese makers of navigation receivers, motors, cameras, and chips. The US Treasury designated Xiamen Limbach and Redlepus in October 2024, the EU added Shenzhen Minghuaxin in June 2026. No maker of radio or data-link modems appears among them.
None of the four sanctions regimes that have pursued Russia's Chinese drone suppliers—the US, EU, UK, and Ukraine—lists Shenzhen Xingkai, a direct check of each register by Euromaidan Press confirms.
The gap cuts both ways. Ukrainian battalion commanders and industry sources put the share of parts in a standard Ukrainian FPV drone—batteries, motor magnets, fiber-optic cable—at up to 65% Chinese-made, and Ukraine buys from Shenzhen too.
Tatarigami, who founded Frontelligence Insight, argues the fix is to extend controls beyond individual firms to the entire chain—down to the optical fiber, the reels it ships on, and the machines that make it. Fiber-optic drones already make up about 60% of Russian FPVs in key sectors, Euromaidan Press reports. The record on firm-by-firm designation is discouraging: after Washington hit Xiamen Limbach, Beijing Xichao took over the engine shipments, Reuters found, and Kupol's Garpiya order climbed from 2,000 drones in 2024 to more than 6,000 this year. But among all component categories in a Geran drone, the one that enables jam-resistant control is the only one absent from the registers.
Xingkai also markets the modem for civilian work—mining, firefighting, maritime. And as the Xichao case shows, cutting off one company rarely halts the flow.
China's foreign ministry claims it knew nothing of the parts exports, says it controls dual-use goods under its own law, and rejects sanctions it calls baseless.
The harder problem is that the same civilian electronics feeding Russia also stock Ukraine's drone lines, so any workable control has to reach named military buyers without severing the dual-use trade Kyiv still needs. And sanctions may not decide this contest at all: Ukraine is already testing electronic-warfare methods built to break the very mesh networks these radios create.
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