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JAERO is a specialized utility developed by jontio that focuses on the demodulation and decoding of Aero satellite-communication signals, a category of data that carries SatCom ACARS messages exchanged by aircraft operating outside the range of conventional VHF ACARS ground stations. By targeting the Inmarsat L-band constellation, the program gives aviation monitoring enthusiasts, researchers, and aerospace telecommunication engineers a lightweight means of extracting plain-text position reports, flight-plan amendments, and airline operational messages that would otherwise remain inaccessible. The application accepts standard 600-ohm IQ or audio baseband input, performs coherent BPSK demodulation, and applies the proprietary Aero protocol stack to recover complete ACARS frames, which can then be logged to disk or forwarded to PlanePlotter and similar visualization suites. Version 1.0.4.13, the first and currently only release, ships as a compact, 32-bit Windows executable that requires no installation; users simply connect the output of an RTL-SDR, Airspy, or similar SDR front-end, set the correct centre frequency for an Inmarsat channel, and begin decoding. Because the decoder is entirely software-defined, it replaces expensive legacy hardware demodulators and makes satellite-based aero message monitoring accessible to anyone with a suitable L-band antenna and low-noise amplifier. Typical use cases include tracking long-haul flights over oceans and remote land regions, building independent air-traffic situational-awareness feeds for flight-tracking websites, and collecting data for academic studies on SATCOM link reliability. The program is offered free of charge and can be downloaded from get.nero.com, where it is kept current through trusted Windows package channels such as winget, supports unattended batch installation alongside other applications, and always delivers the latest build.
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