A Ukrainian firm is testing a jammer light enough to ride on a heavy bomber drone and shield it from the enemy FPVs that hunt it. Aura-Ukraine has begun final tests of the system, called Aura 3K mini, the Dignitas Fund, a charity developing it with the manufacturer, Oboronka reports.

The bombers it is built to protect have become some of Ukraine's most valued drones. In the Donetsk operation last month, heavy bombers dropped kamikaze ground robots more than 10 kilometers behind Russian lines. The same weapon has been fitted with guided bombs that strike at long range with high precision.

At the same time, heavy bombers are large, making them prime targets for Russia. Keeping them in the air, and out of enemy hands, is the point of the new shield.

Two jammers cover 360 degrees

Aura 3K mini wraps the drone in a spherical, 360-degree cover using two broadband jammers, the fund says. Two emitters, not one, close the blind angles a single jammer would leave.

They work across the 2.1 to 2.8 GHz band, enough to disrupt FPV drones without cutting the bomber's own Starlink link. The whole device weighs about 2.4 kilograms.

"Radiation-pattern tests start on the front line in the coming days," the fund's press service says, and if they succeed, the system is set for serial production.

The fund moves to automate it

The next step is to make the jammer smarter, the fund says. It wants an auto-on function that fires only when a threat is detected, so the bomber does not give away its position with constant emission.

The team also plans to adapt Aura 3K mini to Vampire-type bombers, the heavy night drones that Russian troops nickname "Baba Yaga". That would widen the shield's reach across more of Ukraine's bomber fleet.

Russia hunts the Baba Yaga

The nickname points to a fairytale Slavic witch who flies by night. The real thing has been hard for Russia to counter: in 2024, a Ukrainian night bomber was often impossible to jam and, by one account, could be destroyed only with a flamethrower. By 2025, Russia was offering its soldiers 10 days' leave for capturing a Baba Yaga it could not build itself.