This solution brief presents PNT X as a scalable all-in-one platform for testing positioning, navigation, and timing systems against realistic navigation-warfare threats. Purpose-built FPGA and software-defined radio architecture generates high-fidelity GNSS, jamming, spoofing, military, LEO, S-band, and sensor-integrated scenarios. The system supports CRPA testing with 140 dB dynamic range, dynamic jammers, terrain-aware modeling, 2 kHz motion updates, less than 2 ms hardware-in-the-loop latency, and a 100 kHz spin model for rapidly rotating vehicles. It also supports MNSA, AES, SDS M-Code, Galileo authorized signals, Regional Military Protection simulation, secure storage, and alternative PNT testing. These capabilities help teams validate aircraft, missiles, drones, artillery, ground ve

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