Companies

Specmil

Active anti-jam CRPA GPS antenna for drones, missiles and unmanned surface vessels operating under satellite-navigation interference.

Specmil is a Ukrainian maker of anti-jam satellite-navigation hardware. Its product is a controlled-reception-pattern antenna (CRPA) built from an array of four antenna elements, which the company says can suppress up to three jamming sources at once and keep a GPS/GNSS receiver working in a contested radio environment. The antenna is pitched for use across missiles, ground vehicles, drones and maritime equipment, and the company describes it as made in Ukraine.

A CRPA works by steering its reception pattern across its element array, placing a null — effectively a dead zone — in the direction of an interfering transmitter while preserving the genuine satellite signals. That ability has made the technology a focal point of the electronic-warfare contest over Ukraine, where both sides have raced to keep navigation alive under heavy jamming and spoofing. Recovered Russian Shahed-type drones have been found carrying multi-element Chinese CRPA dishes, and Ukrainian forces have pushed to field domestically built equivalents; the BRAVE1 defence-technology cluster has opened a dedicated laboratory so Ukrainian CRPA makers can test their designs under common conditions rather than each on its own bench.

Specmil sits on the autonomy-and-navigation side of that contest, alongside GPS-resilient and GPS-free guidance suppliers such as NORDA Dynamics . Where visual-navigation firms try to remove the satellite dependency altogether, anti-jam antenna makers work the other end of the problem — hardening the satellite link itself so a receiver can still find a fix while a jammer is screaming nearby. In a war where a single well-placed jammer can blind a strike drone over its target, both approaches are in demand.

Publicly, Specmil keeps a light footprint: the company presents its CRPA antenna and its Ukrainian origin, but does not disclose its leadership, location or founding details, and its product has so far drawn little independent press coverage.

crpa anti-jam gnss gps-denied antenna

Products

Hardware

  • GPS CRPA x4

    Controlled-reception-pattern GPS antenna built from an array of four antenna elements, designed to suppress up to three jamming sources for drones, missiles, ground vehicles and maritime platforms.

Sources