Russia is giving its drones bigger antennas to beat Ukrainian jamming

The headline reads like a hardware footnote — bigger antennas on Russian one-way attack drones — but the operational claim buried in it is the real story. Ukrainian intelligence officers and outside experts say Kyiv now needs roughly twice as many jammers to defeat each upgraded Shahed. That single ratio reframes the drone war from a contest over airframes to a contest over the electromagnetic link, and it tells us where Moscow believes it can impose the most pain for the least money.

The mechanics are unglamorous and that is the point. A jammer works by putting enough energy on the drone's control or navigation frequency to drown the signal it needs. Antenna gain, bandwidth, and the geometry of the link all set how much power the defender must deliver to win that fight. A larger or better-matched antenna on the drone can raise its effective sensitivity, narrow its susceptibility, or add a second path — for example, a satellite-navigation receiver that keeps working when the primary link is contested. None of this requires a new airframe or a new engine. It is a modification that can be bolted onto existing production and retrofitted into stock, which is precisely why it scales faster than a new drone design. The reported effect — a doubling of the jammer count needed per target — is the kind of change that does not show up in airframe counts but reshapes the economics of defense.